Updated on 2026/03/10

写真a

 
HATANO YUJI
 
Organization
School of Engineering Researcher
Title
Researcher
External link

Degree

  • Ph.D(Engineering) ( Kyushu University )

Research Interests

  • エネルギー材料

  • Materials Science for Energy Conversion

  • トリチウム

  • 核融合

  • 水素

Research Areas

  • Energy Engineering / Nuclear fusion

  • Nanotechnology/Materials / Structural materials and functional materials

  • Nanotechnology/Materials / Energy chemistry

  • Energy Engineering / Nuclear engineering

Education

  • Kyushu University   Graduate School of Engineering   Department of Nuclear Engineering

    1989.4 - 1989.6

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  • Kyushu University   School of Engineering   Department of Nuclear Engineering

    1985.4 - 1989.3

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    Country: Japan

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Research History

  • Tohoku University   Department of Quantum Science and Energy Engineering, Graduate School of Engineering   Professor   Professor Emeritus, University of Toyama

    2024.7

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  • University of Toyama   Faculty of Science, Academic Assembly   Professor

    2019.10 - 2024.6

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    Country:Japan

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  • University of Toyama   Hydrogen Isotope Research Center   Professor

    2005.4 - 2019.9

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    Country:Japan

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  • University of Toyama   Hydrogen Isotope Research Center

    1998.4 - 2005.3

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  • Kyushu University   Department of Nuclear Engineering, Faculty of Engineering   Assistant Professor

    1989.7 - 1998.3

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Professional Memberships

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Committee Memberships

  • 一般社団法人日本原子力学会   核融合工学部会部会長  

    2021.4 - 2023.3   

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    Committee type:Academic society

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  • International Symposium on Tritium Science and Technology   International Steering Committee  

    2017.4   

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    Committee type:Academic society

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  • International Conference on Fusion Reactor Materials   International Advisory Committee  

    2017.4   

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    Committee type:Academic society

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  • 一般社団法人 プラズマ・核融合学会   理事  

    2014.6 - 2017.6   

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    Committee type:Academic society

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  • 内閣府   フュージョンエネルギーの実現に向けた安全確保の基本的な考え方検討タスクフォース  

    2024.4   

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    Committee type:Government

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  • National Institute for Quantum Science and Technology   Project Committee Member, International Fusion Energy Research Center  

    2023.9   

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    Committee type:Other

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  • 一般社団法人 日本原子力学会   核融合工学部会副部会長  

    2019.4 - 2021.3   

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    Committee type:Academic society

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  • International Workshop on Hydrogen Isotopes in Fusion Reactor Materials   International Program Committee  

    2017.4   

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    Committee type:Academic society

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  • Japan-China Symposium on Materials for Advanced Energy System and Fission & Fusion Engineering   Organizing Committee  

    2016.9   

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    Committee type:Academic society

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  • Asia-Pacific Symposium on Tritium Science   International Program Committee  

    2015.11   

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Papers

  • Simultaneous exposure to neutron radiation and hydrogen environment: Effect on hydrogen retention

    Weicheng Zhong, Yuji Hatano, Takaaki Koyanagi, Adrian M. Schrell, Yutai Katoh

    International Journal of Hydrogen Energy   2025.7

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.ijhydene.2025.06.138

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  • Tritium permeation through Inconel 600 under high temperature, high pressure water environment: Influence of oxidation of coexisting materials and gas addition

    Azusa Matsumoto, Yuji Hatano

    Fusion Engineering and Design   214   114896 - 114896   2025.5

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.fusengdes.2025.114896

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  • Scrape-off layer and divertor physics: Chapter 5 of the special issue: on the path to tokamak burning plasma operation

    K. Krieger, S. Brezinsek, J.W. Coenen, H. Frerichs, A. Kallenbach, A.W. Leonard, T. Loarer, S. Ratynskaia, N. Vianello, N. Asakura, M. Bernert, D. Carralero, R. Ding, D. Douai, T. Eich, Y. Gasparyan, A. Hakola, Y. Hatano, M. Jakubowski, M. Kobayashi, S. Krasheninnikov, S. Masuzaki, T. Nakano, R. Neu, R.A. Pitts, J. Rapp, K. Schmid, O. Schmitz, D. Tskhakaya, L. Wang, T. Wauters, S. Wiesen

    Nuclear Fusion   65 ( 4 )   043001 - 043001   2025.3

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    Publishing type:Research paper (scientific journal)   Publisher:IOP Publishing  

    Abstract

    Since the publication of the review Progress in the ITER Physics Basis (PIPB) in 2007, significant progress has been made in understanding the processes at the plasma-material interface. This review, part of the ITPA Nuclear Fusion Special Issue On the Path to Burning Plasma Operation, presents these developments, focusing on key areas such as the physics of plasma exhaust, plasma-material interactions, and the properties of plasma-facing materials and their evolution under plasma exposure. The coordinated efforts of the ITPA Topical Group on Scrape-Off Layer and Divertor Physics (DivSOL) have been instrumental in identifying and addressing critical research and development issues in numerous collaborative experimental and modelling projects.

    DOI: 10.1088/1741-4326/adaf42

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    Other Link: https://iopscience.iop.org/article/10.1088/1741-4326/adaf42/pdf

  • Tritium distribution analysis of Be limiter tiles from JET-ITER like wall campaigns using imaging plate technique and β-ray induced X-ray spectrometry Reviewed

    S. E. Lee, Y. Hatano, M. Hara, S. Masuzaki, M. Tokitani, M. Oyaizu, H. Kurotaki, D. Hamaguchi, H. Nakamura, N. Asakura, Y. Oya, J. Likonen, A. Widdowson, S. Jachmich, K. Helariutta, M. Rubel

    Fusion Engineering and Design   160   2020.11

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.fusengdes.2020.111959

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  • D retention and depth profile behavior for single crystal tungsten with high temperature neutron irradiation Reviewed

    Y. Oya, F. Sun, Y. Yamauchi, Y. Nobuta, M. Shimada, C. N. Taylor, W. R. Wampler, M. Nakata, L. M. Garrison, Y. Hatano

    Journal of Nuclear Materials   539   2020.10

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jnucmat.2020.152323

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  • Deuterium release from deuterium plasma-exposed neutron-irradiated and non-neutron-irradiated tungsten samples during annealing Reviewed

    V. Kh Alimov, Y. Hatano, T. Kuwabara, T. Toyama, Y. Someya, A. V. Spitsyn

    Nuclear Fusion   60 ( 9 )   2020.9

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/1741-4326/aba337

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  • Kinetics of deuterium penetration into neutron-irradiated tungsten under exposure to high flux deuterium plasma Reviewed

    M. Yajima, Y. Hatano, N. Ohno, T. Kuwabara, T. Toyama, M. Takagi, K. Suzuki

    Nuclear Materials and Energy   21   2019.12

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.nme.2019.100699

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  • Tritium distributions on W-coated divertor tiles used in the third JET ITER-like wall campaign Reviewed

    Y. Hatano, S. E. Lee, J. Likonen, S. Koivuranta, M. Hara, S. Masuzaki, N. Asakura, K. Isobe, T. Hayashi, J. Ikonen, A. Widdowson, X. Litaudon, S. Abduallev, M. Abhangi, P. Abreu, M. Afzal, K. M. Aggarwal, T. Ahlgren, J. H. Ahn, L. Aho-Mantila, N. Aiba, M. Airila, R. Albanese, V. Aldred, D. Alegre, E. Alessi, P. Aleynikov, A. Alfier, A. Alkseev, M. Allinson, B. Alper, E. Alves, G. Ambrosino, R. Ambrosino, L. Amicucci, V. Amosov, E. Andersson Sunden, M. Angelone, M. Anghel, C. Angioni, L. Appel, C. Appelbee, P. Arena, M. Ariola, H. Arnichand, S. Arshad, A. Ash, N. Ashikawa, V. Aslanyan, O. Asunta, F. Auriemma, Y. Austin, L. Avotina, M. D. Axton, C. Ayres, M. Bacharis, A. Baciero, D. Baiao, S. Bailey, A. Baker, I. Balboa, M. Balden, N. Balshaw, R. Bament, J. W. Banks, Y. F. Baranov, M. A. Barnard, D. Barnes, M. Barnes, R. Barnsley, A. Baron Wiechec, L. Barrera Orte, M. Baruzzo, V. Basiuk, M. Bassan, R. Bastow, A. Batista, P. Batistoni, R. Baughan, B. Bauvir, L. Baylor, B. Bazylev, J. Beal, P. S. Beaumont, M. Beckers, B. Beckett, A. Becoulet, N. Bekris, M. Beldishevski, K. Bell, F. Belli, M. Bellinger, E. Belonohy, N. Ben Ayed, N. A. Benterman, H. Bergasker, J. Bernardo, M. Bernert, M. Berry, L. Bertalot

    Nuclear Materials and Energy   18   258 - 261   2019.1

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.nme.2019.01.001

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  • Tritium retention characteristics in dust particles in JET with ITER-like wall Reviewed

    T. Otsuka, S. Masuzaki, N. Ashikawa, Y. Hatano, Y. Asakura, Tatsuya Suzuki, Takumi Suzuki, K. Isobe, T. Hayashi, M. Tokitani, Y. Oya, D. Hamaguchi, H. Kurotaki, R. Sakamoto, Hiroyasu Tanigawa, M. Nakamichi, A. Widdowson, M. Rubel

    Nuclear Materials and Energy   17   279 - 283   2018.12

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.nme.2018.11.001

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  • Deuterium retention in neutron-irradiated single-crystal tungsten Reviewed

    M. Shimada, Y. Oya, W. R. Wampler, Y. Yamauchi, C. N. Taylor, L. M. Garrison, D. A. Buchenauer, Y. Hatano

    Fusion Engineering and Design   136   1161 - 1167   2018.11

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.fusengdes.2018.04.094

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  • Surface morphology of F82H steel exposed to low-energy D plasma at elevated temperatures Reviewed

    V. Kh Alimov, Y. Hatano, N. Yoshida, N. P. Bobyr, M. Oyaidzu, M. Tokitani, T. Hayashi

    Journal of Nuclear Materials   510   366 - 372   2018.11

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jnucmat.2018.08.037

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  • Deuterium trapping at vacancy clusters in electron/neutron-irradiated tungsten studied by positron annihilation spectroscopy Reviewed

    T. Toyama, K. Ami, K. Inoue, Y. Nagai, K. Sato, Q. Xu, Y. Hatano

    Journal of Nuclear Materials   499   464 - 470   2018.2

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jnucmat.2017.11.022

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  • Surface modification and sputtering erosion of iron and copper exposed to low-energy, high-flux deuterium plasmas seeded with metal species Reviewed

    V. Kh Alimov, Y. Hatano, M. Balden, M. Oyaizu, K. Isobe, H. Nakamura, T. Hayashi

    Nuclear Materials and Energy   13   81 - 89   2017.12

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.nme.2017.06.003

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  • Progress in the U.S./Japan PHENIX project for the technological assessment of plasma facing components for DEMO reactors Reviewed

    Yutai Katoh, Daniel Clark, Yoshio Ueda, Yuji Hatano, Minami Yoda, Adrian S. Sabau, Takehiko Yokomine, Lauren M. Garrison, J. Wilna Geringer, Akira Hasegawa, Tatsuya Hinoki, Masashi Shimada, Dean Buchenauer, Yasuhisa Oya, Takeo Muroga

    Fusion Science and Technology   72 ( 3 )   222 - 232   2017.10

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1080/15361055.2017.1333868

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  • Deuterium retention in W and W-Re alloy irradiated with high energy Fe and W ions: Effects of irradiation temperature Reviewed

    Y. Hatano, K. Ami, V. Kh Alimov

    Nuclear Materials and Energy   9   93 - 97   2016.12

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.nme.2016.06.016

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  • Permeation and permeation barrier Reviewed

    Yuji Hatano

    Tritium: Fuel of Fusion Reactors   207 - 229   2016.1

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    Publishing type:Part of collection (book)  

    DOI: 10.1007/978-4-431-56460-7_9

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  • Surface modification and deuterium retention in reduced activation ferritic martensitic steels exposed to low-energy, high flux D plasma and D<inf>2</inf> gas Reviewed

    V. Kh Alimov, Y. Hatano, K. Sugiyama, M. Balden, T. Höschen, M. Oyaidzu, J. Roth, J. Dorner, M. Fußeder, T. Yamanishi

    Physica Scripta   T159   2014

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    Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1088/0031-8949/2014/T159/014049

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  • Deuterium trapping at defects created with neutron and ion irradiations in tungsten Reviewed

    Y. Hatano, M. Shimada, T. Otsuka, Y. Oya, V. Kh Alimov, M. Hara, J. Shi, M. Kobayashi, T. Oda, G. Cao, K. Okuno, T. Tanaka, K. Sugiyama, J. Roth, B. Tyburska-Püschel, J. Dorner, N. Yoshida, N. Futagami, H. Watanabe, M. Hatakeyama, H. Kurishita, M. Sokolov, Y. Katoh

    Nuclear Fusion   53 ( 7 )   2013.7

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/0029-5515/53/7/073006

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  • Trapping of hydrogen isotopes in radiation defects formed in tungsten by neutron and ion irradiations Reviewed

    Y. Hatano, M. Shimada, V. Kh Alimov, J. Shi, M. Hara, T. Nozaki, Y. Oya, M. Kobayashi, K. Okuno, T. Oda, G. Cao, N. Yoshida, N. Futagami, K. Sugiyama, J. Roth, B. Tyburska-Püschel, J. Dorner, I. Takagi, M. Hatakeyama, H. Kurishita, M. A. Sokolov

    Journal of Nuclear Materials   438 ( SUPPL )   2013

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jnucmat.2013.01.018

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  • Retention of hydrogen isotopes in neutron irradiated tungsten

    Yuji Hatano, Masashi Shimada, Yasuhisa Oya, Guoping Cao, Makoto Kobayashi, Masanori Hara, Brad J. Merrill, Kenji Okuno, Mikhail A. Sokolov, Yutai Katoh

    Materials Transactions   54 ( 4 )   437 - 441   2013

  • Effect of irradiation temperature on the microstructure and hardness of W-0.3Cr alloy after irradiation with 6.4 MeV Fe ions

    Jing Wang, Jingxian Sun, Yingying Jia, Yifan Zhang, Yuji Hatano, Diancheng Geng, Katsuya Suzuki, Chang Chen, Laima Luo, Kiyohiro Yabuuchi, Ryuta Kasada

    MATERIALS & DESIGN   259   2025.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.matdes.2025.114783

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  • Helium bubble behaviour in W-Mo alloys by in-situ TEM under He+ irradiation

    Joshua Ashley, Mitsutaka Miyamoto, Yuji Hatano, Enrique Jimenez-Melero

    Journal of Nuclear Materials   2025.10

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jnucmat.2025.156017

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  • Effects of neutron irradiation on hydrogen isotope permeation on W-Re

    Yuzuka Hoshino, Fei Sun, Makoto I. Kobayashi, Takeshi Toyama, Robert Kolasinski, Chase N. Taylor, Masashi Shimada, Yuji Hatano, Yasuhisa Oya

    Fusion Engineering and Design   211   114769 - 114769   2025.2

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.fusengdes.2024.114769

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  • Comparative characterization of mixed spectra and thermal neutron shielded irradiated tungsten

    Hanns Gietl, Chase N. Taylor, Yuji Hatano, Yasuhisa Oya, Masashi Shimada

    Journal of Nuclear Materials   2025.1

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jnucmat.2024.155498

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  • Precise Spectroscopy of the 3⁢𝑛 and 3⁢𝑝 Systems via the 3H⁡(𝑡,3He)⁢3⁢𝑛 and 3He⁢(3He,𝑡)⁢3⁢𝑝 Reactions at Intermediate Energies Reviewed

    K. Miki, K. Kameya, D. Sakai, R. Urayama, N. Imai, S. Ishikawa, S. Michimasa, S. Ota, M. Sasano, H. Takeda, T. Uesaka, H. Haba, M. Hara, Y. Hatano, T. Hayamizu, N. Kobayashi, A. Tamii, S. Adachi, T. Chillery, M. Dozono, Y. Fujikawa, H. Fujita, N. Fukuda, T. Furuno, J. Gao, S. Goto, S. Hanai, S. Hayakawa, Y. Hijikata, K. Himi, Y. Hirai, J. W. Hwang, M. Ichimura, D. Inomoto, M. Inoue, H. Kasahara, T. Kawabata, K. Kishimoto, S. Kitayama, K. Kusaka, J. Li, Y. Maeda, Y. Maruta, T. Matsui, T. Matsuzaki, S. Nakai, H. Nishibata, M. Otake, Y. Saito, H. Sakai, A. Sakaue, H. Sato, K. Sekiguchi, Y. Shimizu, S. Shimoura, L. Stuhl, T. Sumikama, H. Suzuki, R. Tsuji, S. Tsuji, H. Umetsu, Y. Utsuki, T. Wakasa, A. Watanabe, K. Yako, Y. Yanagisawa, N. Yokota, C. Yonemura, K. Yoshida, M. Yoshimoto

    Physical Review Letters   133 ( 1 )   2024.7

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    Publishing type:Research paper (scientific journal)   Publisher:American Physical Society (APS)  

    DOI: 10.1103/physrevlett.133.012501

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    Other Link: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.133.012501/fulltext

  • Co-deposited layers on gap surfaces of bulk tungsten divertor tiles in JET ITER-like wall: Directional effects and nanostructures Reviewed

    Masayuki Tokitani, Mitsutaka Miyamoto, Suguru Masuzaki, Yuji Hatano, Sun Eui Lee, Yasuhisa Oya, Hironori Kurotaki, Nobuyuki Asakura, Hirofumi Nakamura, Takumi Hayashi, Marek Rubel, Anna Widdowson, Jari Likonen

    Nuclear Materials and Energy   39   101678 - 101678   2024.6

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.nme.2024.101678

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  • Liquid metal compatibility of pre-oxidized FeCrAl in flowing Sn Reviewed

    B.A. Pint, Y.F. Su, M. Romedenne, J. Jun, M. Kondo, N. Oono, K. Sakamoto, Yuji Hatano

    Fusion Engineering and Design   2024.5

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    Authorship:Last author   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.fusengdes.2024.114377

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  • Evaluation of hydrogen embrittlement in ODS-Cu, Cu–Cr–Zr, and Cu–Cr alloys using slow strain rate technique test Reviewed

    M. Hatakeyama, Y. Asai, D. Nakato, M. Nishimura, Y. Hatano, S. Sunada, K. Sato

    Nuclear Materials and Energy   38   101580 - 101580   2024.3

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.nme.2024.101580

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  • Visualization of Hydrogen and Hydrogen-induced Defects in Tensile-deformed Pure Iron Using Hydrogen Microprint and Tritium Autoradiography Reviewed

    Toshiaki Manaka, Goroh Itoh, Junya Kobayashi, Shigeru Kuramoto, Yuji Hatano

    ISIJ International   64 ( 4 )   655 - 659   2024.2

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    Authorship:Last author   Publishing type:Research paper (scientific journal)   Publisher:Iron and Steel Institute of Japan  

    DOI: 10.2355/isijinternational.isijint-2023-279

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  • Overview of tritium retention in divertor tiles and dust particles from the JET tokamak with the ITER-like wall Reviewed

    Y. Torikai, G. Kikuchi, A. Owada, S. Masuzaki, T. Otsuka, N. Ashikawa, M. Yajima, M. Tokitani, Y. Oya, S.E. Lee, Y. Hatano, N. Asakura, T. Hayashi, M. Oyaidzu, J. Likonen, A. Widdowson, M. Rubel

    Nuclear Fusion   64 ( 1 )   016032 - 016032   2023.12

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    Publishing type:Research paper (scientific journal)   Publisher:IOP Publishing  

    Abstract

    Divertor tiles after Joint European Torus-ITER like wall (JET-ILW) campaigns and dust collected after JET-C and JET-ILW operation were examined by a set of complementary techniques (full combustion and radiography) to determine the total, specific and areal tritium activities, poloidal tritium distribution in the divertor and the presence of that isotope in individual dust particles. In the divertor tiles, the majority of tritium is detected in the surface region and, the areal activities in the ILW divertor are in the 0.5–12 kBq cm−2 range. The activity in the ILW dust is associated mainly with the presence of carbon particles being a legacy from the JET-C operation. The total tritium activities show significant differences between the JET operation with ILW and the earlier phase with the carbon wall (JET-C) indicating that tritium retention has been significantly decreased in the operation with ILW.

    DOI: 10.1088/1741-4326/ad0c08

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    Other Link: https://iopscience.iop.org/article/10.1088/1741-4326/ad0c08/pdf

  • Development and fabrication of a thick Ti-3H target for the 3H(t,3He)3n experiment at intermediate energies Reviewed

    K. Miki, Y. Utsuki, M. Hara, Y. Hatano, N. Imai, M. Inoue, M. Itoh, K. Kameya, S. Kitayama, Y. Maruta, Y. Matsuda, Y. Saito, D. Sakai, T. Uesaka, H. Umetsu, R. Urayama, J. Wang, K. Kamada, Y. Shoji, A. Yoshikawa

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   2023.11

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.nima.2023.168583

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  • Thermal annealing effect on D retention for damaged W-10%Re alloy Reviewed

    Yasuhisa Oya, Nao Inozume, Yuzuka Hoshino, Naoaki Yoshida, Tatsuya Hinoki, Kiyohiro Yabuuchi, Yuji Hatano, Qilai Zhou, Fei Sun, Robert Kolasinski, Chase N. Taylor, Masashi Shimada

    Fusion Engineering and Design   196   113981 - 113981   2023.11

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.fusengdes.2023.113981

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  • Ultrahigh-Flux Concerting Materials Reviewed

    Takuya NAGASAKA, Makoto I. KOBAYASHI, Teruya TANAKA, Sadatsugu TAKAYAMA, Hiroyuki NOTO, Jingjie SHEN, Tatsuya HINOKI, Kiyohiro YABUUCHI, Katsuaki TANABE, Ryuta KASADA, Sosuke KONDO, Shuhei NOGAMI, Hiroki KURITA, Naoyuki HASHIMOTO, Yuji YAMAUCHI, Yasuhisa OYA, Takumi CHIKADA, Yuji HATANO, Kazunari KATAYAMA, Makoto OYA, Naoko OONO, Yoshitaka MORI

    Plasma and Fusion Research   18   2505085 - 2505085   2023.10

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    Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Plasma Science and Nuclear Fusion Research  

    DOI: 10.1585/pfr.18.2505085

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  • Effect of He seeding on hydrogen isotope permeation in tungsten by H-D mixed plasma exposure Reviewed

    Yasuhisa Oya, Kyosuke Ashizawa, Fei Sun, Shiori Hirata, Naoko Ashikawa, Yoji Someya, Yuji Hatano, Robert Kolasinski, Chase N. Taylor, Masashi Shimada

    Fusion Engineering and Design   194   113722 - 113722   2023.9

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.fusengdes.2023.113722

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  • Control and Application of Ultrahigh Hydrogen Flux in Materials Reviewed

    Makoto I. KOBAYASHI, Yuji HATANO, Masanori HARA, Yasuhisa OYA, Yuji YAMAUCHI, Teppei OTSUKA, Takuya NAGASAKA

    Plasma and Fusion Research   18   2105073 - 2105073   2023.8

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    Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Plasma Science and Nuclear Fusion Research  

    DOI: 10.1585/pfr.18.2105073

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  • Deuterium retention in reduced activation ferritic/martensitic steel EUROFER97 exposed to low-energy deuterium plasma Reviewed

    V.Kh. Alimov, J. Roth, K. Sugiyama, M.J. Baldwin, R.P. Doerner, Y. Hatano

    Nuclear Materials and Energy   35   101430 - 101430   2023.6

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier {BV}  

    DOI: 10.1016/j.nme.2023.101430

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  • Irradiation effects on binary tungsten alloys at elevated temperatures: Vacancy cluster formation, precipitation of alloying elements and irradiation hardening Reviewed

    Jing Wang, Yuji Hatano, Takeshi Toyama, Tatsuya Hinoki, Kiyohiro Yabuuchi, Yi-fan Zhang, Bing Ma, Alexander V. Spitsyn, Nikolay P. Bobyr, Koji Inoue, Yasuyoshi Nagai

    Materials &amp; Design   229   111899 - 111899   2023.5

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    DOI: 10.1016/j.matdes.2023.111899

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  • Tritium distributions in castellated structures of Be limiter tiles from JET-ITER-like wall experiments Reviewed

    S. Lee, Y. Hatano, S. Masuzaki, Y. Oya, M. Tokitani, M. Yajima, T. Otsuka, N. Ashikawa, Y. Torikai, N. Asakura, H. Nakamura, H. Kurotaki, T. Hayashi, T. Nozawa, A.M. Ito, J. Likonen, A. Widdowson, M. Rubel

    Nuclear Fusion   63 ( 4 )   046023 - 046023   2023.3

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    Abstract

    Tritium retention in the castellated structure of beryllium limiters used in JET with the ITER-like wall (ILW) during the first (ILW1), third (ILW3) and all three (ILW1-3) campaigns were examined and evaluated. Tritium was deposited on the surfaces inside the castellation grooves together with deuterium, beryllium, oxygen, carbon and small amounts of metallic impurities such as nickel, copper and tungsten. The tritium content after the ILW1 campaign was greater than after the ILW3 campaign. This is attributed to the steadily decreasing amount of carbon impurities in JET from campaign to campaign. The majority of tritium was retained in shallow regions in the grooves, up to 2 mm from the entrance to the gap. It was comparable on all sides of the castellation, i.e. no difference has been detected between the toroidal and poloidal gaps. Secondly, the tritium retention in the gaps was similar on all specimens independent of their position in the tokamak, while the retention on the plasma-facing surfaces clearly depended on the tile position. The tritium deposition patterns in the castellation were also compared with the deuterium distribution determined in earlier studies.

    DOI: 10.1088/1741-4326/acb9a5

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  • Surface chemistry of neutron irradiated tungsten in a high-temperature multi-material environment☆ Reviewed

    Chase N. Taylor, Masashi Shimada, Yuji Nobuta, Makoto I. Kobayashi, Yasuhisa Oya, Yuji Hatano, Takaaki Koyanagi

    Nuclear Materials and Energy   34   101323 - 101323   2023.3

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    DOI: 10.1016/j.nme.2022.101323

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  • Measurement of DNA length on video of fluorescence microscope by pix2pix trained by molecular dynamics simulation Reviewed

    Seiki Saito, Ayumi Kobashi, Haruto Miura, Hiroaki Nakamura, Takahiro Kenmotsu, Yasuhisa Oya, Yuji Hatano

    Journal of Advanced Simulation in Science and Engineering   10 ( 1 )   172 - 181   2023

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    DOI: 10.15748/jasse.10.172

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  • Refractive index measurements of solid deuterium–tritium Reviewed

    Keisuke Iwano, Jiaqi Zhang, Akifumi Iwamoto, Yuki Iwasa, Keisuke Shigemori, Masanori Hara, Yuji Hatano, Takayoshi Norimatsu, Kohei Yamanoi

    Scientific Reports   12 ( 1 )   2022.12

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    <title>Abstract</title>Physical properties of tritium (T) and deuterium (D) have been of great interest as a fuel for nuclear fusion. However, several kinds of the physical properties in a cryogenic environment have not been reported. Optical properties in liquid and solid phases are indispensable for the quality control of the DT fuel. We study the dependence of the refractive index of solid DT on temperature. A dedicated cryogenic system has been developed and forms a transparent solid DT in a prism cell. Refractive index measurements based on Snell’s law were conducted. The refractive indexes of solid DT are from 1.1618 ± 0.0002 to 1.1628 ± 0.0002 in the temperature range of 19.40 K to 17.89 K.

    DOI: 10.1038/s41598-022-06298-1

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  • Effect of rhenium addition on deuterium retention in neutron-irradiated tungsten Reviewed

    Y. Nobuta, T. Toyama, A. Matsumoto, M. Shimada, Y. Oya, K. Inoue, Y. Nagai, Y. Hatano

    Journal of Nuclear Materials   566   2022.8

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    DOI: 10.1016/j.jnucmat.2022.153774

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  • Neutron irradiation of tungsten in hydrogen environment at HFIR Reviewed

    Nesrin O. Cetiner, Yuji Hatano, Joel L. McDuffee, Dan Ilas, Yutai Katoh, Josina W. Geringer, Takeshi Toyama

    Fusion Engineering and Design   178   113089 - 113089   2022.5

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  • An overview of tritium retention in dust particles from the JET-ILW divertor Reviewed

    T Otsuka, S Masuzaki, N Ashikawa, Y Torikai, Y Hatano, M Tokitani, Y Oya, N Asakura, T Hayashi, H Tanigawa, Y Iwai, A Widdowson, M Rubel

    Physica Scripta   97 ( 2 )   024008 - 024008   2022.2

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    <title>Abstract</title>
    Tritium (T) retention characteristics in dust collected from the divertor in JET with ITER-like wall (JET-ILW) after the third campaign in 2015–2016 (ILW-3) have been examined in individual dust particles by combining radiography (tritium imaging plate technique) and electron probe micro-analysis. The results are summarized and compared with the data obtained after the first campaign in 2011–2012 (ILW-1). The dominant component in ILW-1 dust was carbon (C) originating from tungsten-coated carbon fibre composite (CFC) tiles in JET-ILW divertor and/or legacy of C dust after the JET operation with carbon wall. Around 85% of the total tritium retention in ILW-1 dust was attributed to the C dust. The retention in tungsten (W) and beryllium (Be) dominated particles was 100 times smaller than the highest T retention in carbon-based particles. After ILW-3 the main component contributing to the T retention was W. The number of small W particles with T increased, in comparison to ILW-1, most probably by the exfoliation and fragmentation of W coatings on CFC tiles though T retention in individual W particles was smaller than in C particles. The detection of only very few Be-dominated dust particles found after ILW-1 and ILW-3 could imply stable Be deposits on the divertor tiles.

    DOI: 10.1088/1402-4896/ac445b

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  • Suppression of vacancy formation and hydrogen isotope retention in irradiated tungsten by addition of chromium

    Jing Wang, Yuji Hatano, Takeshi Toyama, Tomoaki Suzudo, Tatsuya Hinoki, Vladimir Kh Alimov, Thomas Schwarz-Selinger

    Journal of Nuclear Materials   559   2022.2

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    DOI: 10.1016/j.jnucmat.2021.153449

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  • Rate of double strand breaks of genome-sized DNA in tritiated water: Its dependence on tritium concentration and water temperature Reviewed

    Yuji Hatano, Hiroto Shimoyachi, Tatsuya Asano, Takahiro Kenmotsu, Takuro Wada, Yasuhisa Oya, Hiroaki Nakamura, Susumu Fujiwara

    Journal of Advanced Simulation in Science and Engineering   9 ( 1 )   198 - 205   2022.1

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    DOI: 10.15748/jasse.9.198

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  • Damages of DNA in tritiated water

    Yuji Hatano, Hiroaki Nakamura, Susumu Fujiwara, Seiki Saito, Takahiro Kenmotsu

    DNA Damage and Double Strand Breaks - Part A   131 - 152   2022

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    DOI: 10.1016/bs.enz.2022.08.009

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  • Microstructure, hardening and deuterium retention in CVD tungsten irradiated with neutrons at temperatures of defect recovery stages II and III

    Xiao Ou Yi, Tatsuya Kuwabara, Vladimir Kh Alimov, Yu Feng Du, Wen Tuo Han, Ping Ping Liu, Bin You Yan, Jiu Peng Song, Kenta Yoshida, Takeshi Toyama, Fa Rong Wan, Somei Ohnuki, Yuji Hatano, Yasuyoshi Nagai

    Tungsten   4 ( 3 )   248 - 260   2022

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    DOI: 10.1007/s42864-022-00161-6

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  • Cracking behavior and microstructural, mechanical and thermal characteristics of tungsten–rhenium binary alloys fabricated by laser powder bed fusion

    Takafumi Yamamoto, Masanori Hara, Yuji Hatano

    International Journal of Refractory Metals and Hard Materials   100   2021.11

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    DOI: 10.1016/j.ijrmhm.2021.105651

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  • Protective behavior of tea catechins against DNA double strand breaks produced by radiations with different linear energy transfer

    Takuro Wada, Ayaka Koike, Shota Yamazaki, Kyosuke Ashizawa, Fei Sun, Yuji Hatano, Hiroto Shimoyachi, Takahiro Kenmotsu, Takashi Ikka, Yasuhisa Oya

    Fusion Engineering and Design   172   2021.11

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    DOI: 10.1016/j.fusengdes.2021.112700

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  • Tritium behavior in isotropic graphite at room temperature

    Naritoshi Kawamura, Shiro Matoba, Shunsuke Makimura, Masanori Hara, Yuji Hatano

    Fusion Engineering and Design   172   112801 - 112801   2021.11

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    DOI: 10.1016/j.fusengdes.2021.112801

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  • Penetration of deuterium into neutron-irradiated tungsten under plasma exposure

    Miyuki Yajima, Yuji Hatano, Vladimir Alimov, Takeshi Toyama, Tatsuya Kuwabara, Thomas Schwarz-Selinger, Yasuhisa Oya, Alexander Spitsyn, Noriyasu Ohno

    Physica Scripta   2021.10

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    DOI: 10.1088/1402-4896/ac2c20

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  • Effects of irradiation temperature on tritium retention in stainless steel type 316L

    Masao Matsuyama, Hideki Zushi, Kazuaki Hanada, Yasuhisa Oya, Yuji Hatano

    Fusion Engineering and Design   169   2021.8

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    DOI: 10.1016/j.fusengdes.2021.112436

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  • Effect of temperature distribution on tritium permeation rate to cooling water in JA DEMO condition

    Kazunari Katayama, Youji Someya, Takumi Chikada, Kenji Tobita, Hirofumi Nakamura, Yuji Hatano, Ryoji Hiwatari, Yoshiteru Sakamoto, Akito Ipponsugi, Makoto Oya

    Fusion Engineering and Design   169   112576 - 112576   2021.8

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    DOI: 10.1016/j.fusengdes.2021.112576

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  • Numerical analysis of deuterium migration behaviors in tungsten damaged by fast neutron by means of gas absorption method

    Makoto Kobayashi, Masashi Shimada, Chase N. Taylor, Yuji Nobuta, Yuji Hatano, Yasuhisa Oya

    FUSION ENGINEERING AND DESIGN   168   2021.7

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    DOI: 10.1016/j.fusengdes.2021.112635

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  • Erratum: “Conceptual Design of HFIR Irradiation Experiment for Material Compatibility Study on Liquid Sn Divertor” [Plasma Fusion Res. 16, 2405040 (2021)] Reviewed

    Masatoshi KONDO, Bruce A. PINT, Jiheon JUN, Nick RUSSELL, Joel McDUFFEE, Masafumi AKIYOSHI, Teruya TANAKA, Naoko OONO, Junichi MIYAZAWA, Josina, W GERINGER, Yutai KATOH, Yuji HATANO

    Plasma and Fusion Research   16 ( 0 )   2905088 - 2905088   2021.6

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    DOI: 10.1585/pfr.16.2905088

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  • Deuterium retention in tungsten irradiated by high-dose neutrons at high temperature

    M. Oya, M. Shimada, C. N. Taylor, M. Kobayashi, Y. Nobuta, Y. Yamauchi, Y. Oya, Y. Ueda, Y. Hatano

    NUCLEAR MATERIALS AND ENERGY   27   2021.6

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    DOI: 10.1016/j.nme.2021.100980

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  • Global distribution of tritium in JET with the ITER-like wall

    S. E. Lee, Y. Hatano, M. Tokitani, S. Masuzaki, Y. Oya, T. Otsuka, N. Ashikawa, Y. Torikai, N. Asakura, H. Nakamura, K. Isobe, H. Kurotaki, D. Hamaguchi, T. Hayashi, A. Widdowson, S. Jachmich, J. Likonen, M. Rubel

    Nuclear Materials and Energy   26   2021.3

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    DOI: 10.1016/j.nme.2021.100930

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  • Deuterium retention in W and binary W alloys irradiated with high energy Fe ions

    Jing Wang, Yuji Hatano, Tatsuya Hinoki, Vladimir Kh. Alimov, Alexander V. Spitsyn, Nikolay P. Bobyr, Sosuke Kondo, Takeshi Toyama, Heun Tae Lee, Yoshio Ueda, Thomas Schwarz-Selinger

    JOURNAL OF NUCLEAR MATERIALS   545   2021.3

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    DOI: 10.1016/j.jnucmat.2020.152749

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  • Effects of fabrication conditions on the microstructure, pore characteristics and gas retention of pure tungsten prepared by laser powder bed fusion

    Takafumi Yamamoto, Masanori Hara, Yuji Hatano

    International Journal of Refractory Metals and Hard Materials   95   2021.2

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    DOI: 10.1016/j.ijrmhm.2020.105410

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  • Effects of Helium Seeding on Deuterium Retention in Neutron-Irradiated Tungsten

    Yuji Nobuta, Masashi Shimada, Chase N. Taylor, Yasuhisa Oya, Yuji Hatano, Yaqiao Wu, Megha Dubey

    FUSION SCIENCE AND TECHNOLOGY   77 ( 1 )   76 - 79   2021.1

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    DOI: 10.1080/15361055.2020.1843314

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  • Image processing method for automatic measurement of number of DNA breaks

    Seiki Saito, Hiroaki Nakamura, Takahiro Kenmotsu, Yasuhisa Oya, Yuji Hatano, Yuichi Tamura, Susumu Fujiwara, Hiroaki Ohtani

    Journal of Advanced Simulation in Science and Engineering   8 ( 2 )   173 - 193   2021

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    DOI: 10.15748/jasse.8.173

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  • Tritium retention in displacement-damaged tungsten exposed to deuterium-tritium gas mixture at elevated temperatures

    Alimov, V.K., Torikai, Y., Hatano, Y., Schwarz-Selinger, T.

    Fusion Engineering and Design   162   2021

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    DOI: 10.1016/j.fusengdes.2020.112100

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  • Evaluation of the hydrogen solubility and diffusivity in proton-conducting oxides by converting the PSL values of a tritium imaging plate

    M. Khalid Hossain, Kenichi Hashizume, Yuji Hatano

    Nuclear Materials and Energy   25   2020.12

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    DOI: 10.1016/j.nme.2020.100875

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  • Dynamics of Hydrogen Isotope Absorption and Emission of Neutron-Irradiated Tungsten

    Takeshi Toyama, Miyuki Yajima, Noriyasu Ohno, Tatsuya Kuwabara, Vladimir Kh Alimov, Yuji Hatano

    PLASMA AND FUSION RESEARCH   15   2020.11

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    DOI: 10.1585/pfr.15.1505081

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  • Gamma-ray irradiation effect on deuterium retention in reduced activation ferritic/martensitic steel and ceramic coatings Reviewed

    Shota Nakazawa, Kazuki Nakamura, Hikari Fujita, Hans Maier, Thomas Schwarz-Selinger, Yuji Hatano, Naoko Ashikawa, Wataru Inami, Yoshimasa Kawata, Takumi Chikada

    Journal of Nuclear Materials   539   2020.10

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    DOI: 10.1016/j.jnucmat.2020.152321

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  • Hydrogen isotope exchange in tungsten during heating in hydrogen isotope gas atmosphere Reviewed

    Yuji Nobuta, Yuji Hatano, Sun Eui Lee, Masato Nakayama

    Fusion Engineering and Design   157   111703 - 111703   2020.8

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    DOI: 10.1016/j.fusengdes.2020.111703

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  • Development of Tritium Tracer Doped Liquid Fuel Target for Inertial Confinement Fusion at the Gekko XII-LFEX Facility Reviewed

    Yasunobu Arikawa, Yuki Iwasa, Kohei Yamanoi, Keisuke Iwano, Shinsuke Fujioka, Akifumi Iwamoto, Mitsuo Nakai, Yuji Hatano, Masanori Hara, Satoshi Akamaru, Takayoshi Norimatsu, Ryosuke Kodama

    Fusion Science and Technology   76 ( 4 )   464 - 470   2020.5

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    DOI: 10.1080/15361055.2020.1716458

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  • Hydrogen Isotope Dissolution and Release Behavior of Rare Earth Oxides Reviewed

    M. Khalid Hossain, Kenichi Hashizume, Shinnosuke Jo, Kaname Kawaguchi, Yuji Hatano

    Fusion Science and Technology   76 ( 4 )   553 - 566   2020.5

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    DOI: 10.1080/15361055.2020.1728173

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  • Influence of Internal Structure of Semiconductor Detector on Spectrum of X-Rays Induced by Tritium Beta Rays Reviewed

    S. E. Lee, Y. Hatano, M. Hara, M. Matsuyama

    Fusion Science and Technology   76 ( 3 )   327 - 332   2020.4

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    DOI: 10.1080/15361055.2020.1711855

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  • Deuterium Permeation Behavior in Fe Ion Damaged Tungsten Studied by Gas-Driven Permeation Method Reviewed

    Mingzhong Zhao, Moeko Nakata, Fei Sun, Yuji Hatano, Yoji Someya, Kenji Tobita, Yasuhisa Oya

    Fusion Science and Technology   76 ( 3 )   246 - 251   2020.4

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    DOI: 10.1080/15361055.2019.1705727

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  • Helium and hydrogen interaction in tungsten simultaneously irradiated by He+-H<inf>2</inf>+ at high temperature Reviewed

    Qilai Zhou, Akihiro Togari, Moeko Nakata, Mingzhong Zhao, Fei Sun, Miyuki Yajima, Masayuki Tokitani, Suguru Masuzaki, Naoaki Yoshida, Masanori Hara, Yuji Hatano, Yasuhisa Oya

    International Journal of Hydrogen Energy   45 ( 16 )   9959 - 9968   2020.3

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    DOI: 10.1016/j.ijhydene.2020.01.202

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  • Surface morphology of the bulk tungsten divertor tiles from JET ITER-like wall Reviewed

    J. E.T. Contributors, M. Tokitani, M. Miyamoto, S. Masuzaki, Y. Hatano, S. E. Lee, Y. Oya, T. Otsuka, M. Oyaidzu, H. Kurotaki, T. Suzuki, D. Hamaguchi, T. Hayashi, N. Asakura, A. Widdowson, S. Jachmich, M. Rubel

    Physica Scripta   2020 ( T171 )   2020.1

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    DOI: 10.1088/1402-4896/ab3d09

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  • Molecular dynamics study on DNA damage by tritium disintegration Reviewed

    Hiroaki Nakamura, Hisanori Miyanishi, Takuo Yasunaga, Susumu Fujiwara, Tomoko Mizuguchi, Ayako Nakata, Tsuyoshi Miyazaki, Takao Otsuka, Takahiro Kenmotsu, Yuji Hatano, Shinji Saito

    Japanese Journal of Applied Physics   59 ( SA )   2020.1

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    DOI: 10.7567/1347-4065/ab460d

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  • Determination of retained tritium from ILW dust particles in JET Reviewed

    N. Ashikawa, Y. Torikai, N. Asakura, T. Otsuka, A. Widdowson, M. Rubel, M. Oyaizu, M. Hara, S. Masuzaki, K. Isobe, Y. Hatano, K. Heinola, A. Baron-Wiechec, S. Jachmich, T. Hayashi

    Nuclear Materials and Energy   22   2020.1

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    DOI: 10.1016/j.nme.2019.100673

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  • Stable structure of hydrogen atoms trapped in tungsten divacancy Reviewed

    Kazuhito Ohsawa, Takeshi Toyama, Yuji Hatano, Masatake Yamaguchi, Hideo Watanabe

    Journal of Nuclear Materials   527   2019.12

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    DOI: 10.1016/j.jnucmat.2019.151825

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  • Dynamics evaluation of hydrogen isotope behavior in tungsten simulating damage distribution Reviewed

    Moeko Nakata, Keisuke Azuma, Akihiro Togari, Qilai Zhou, Mingzhong Zhao, Takeshi Toyama, Yuji Hatano, Naoaki Yoshida, Hideo Watanabe, Masashi Shimada, Dean Buchenauer, Yasuhisa Oya

    Fusion Engineering and Design   146   2096 - 2099   2019.9

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    DOI: 10.1016/j.fusengdes.2019.03.114

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  • Kinetics of double strand breaks of DNA in tritiated water evaluated using single molecule observation method Reviewed

    Yuji Hatano, Yuna Konaka, Hiroto Shimoyachi, Takahiro Kenmotsu, Yasuhisa Oya, Hiroaki Nakamura

    Fusion Engineering and Design   146   100 - 102   2019.9

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    DOI: 10.1016/j.fusengdes.2018.11.045

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  • Influence of dynamic annealing of irradiation defects on the deuterium retention behaviors in tungsten irradiated with neutron Reviewed

    Makoto Kobayashi, Masashi Shimada, Chase N. Taylor, Dean Buchenauer, Robert Kolasinski, Takaaki Koyanagi, Yuji Nobuta, Yuji Hatano, Yasuhisa Oya

    Fusion Engineering and Design   146   1624 - 1627   2019.9

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    DOI: 10.1016/j.fusengdes.2019.03.003

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  • Deuterium Removal Efficiency in Tungsten as a Function of Hydrogen Ion Beam Fluence and Temperature Reviewed

    Mingzhong Zhao, Qilai Zhou, Moeko Nakata, Akihiro Togari, Fei Sun, Yuji Hatano, Naoaki Yoshida, Yasuhisa Oya

    Lecture Notes in Networks and Systems   53   20 - 27   2019

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    DOI: 10.1007/978-3-319-99834-3_3

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  • Effect of Damage Introduction and He Existence on D Retention in Tungsten by High Flux D Plasma Exposure Reviewed

    Yasuhisa Oya, Keisuke Azuma, Akihiro Togari, Moeko Nakata, Qilai Zhou, Mingzhong Zhao, Tatsuya Kuwabara, Noriyasu Ohno, Miyuki Yajima, Yuji Hatano, Takeshi Toyama

    Lecture Notes in Networks and Systems   53   89 - 96   2019

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    DOI: 10.1007/978-3-319-99834-3_12

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  • Structural Changes in Tritium-Substituted Polymeric Materials by Beta Decays: A Molecular Dynamics Study

    Haolun Li, Susumu Fujiwara, Hiroaki Nakamura, Tomoko Mizuguchi, Takuo Yasunaga, Takao Otsuka, Takahiro Kenmotsu, Yuji Hatano, Shinji Saito

    PLASMA AND FUSION RESEARCH   14   2019

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    DOI: 10.1585/pfr.14.3401106

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  • Computational strategy for studying structural change of tritium-substituted macromolecules by a beta decay to helium-3

    Susumu Fujiwara, Hiroaki Nakamura, Haolun Li, Hisanori Miyanishi, Tomoko Mizuguchi, Takuo Yasunaga, Takao Otsuka, Yuji Hatano, Shinji Saito

    JOURNAL OF ADVANCED SIMULATION IN SCIENCE AND ENGINEERING   6 ( 1 )   94 - 99   2019

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    DOI: 10.15748/jasse.6.94

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  • Computational strategy for studying structural change of tritium-substituted macromolecules by a beta decay to helium-3

    Fujiwara Susumu, Nakamura Hiroaki, Li Haolun, Miyanishi Hisanori, Mizuguchi Tomoko, Yasunaga Takuo, Otsuka Takao, Hatano Yuji, Saito Shinji

    Journal of Advanced Simulation in Science and Engineering   6 ( 1 )   94 - 99   2019

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    Language:English   Publisher:Japan Society for Simulation Technology  

    <p>We propose a computational strategy for investigating structural change of tritium-substituted macromolecules. Effects of radiation on macromolecules such as polymeric materials and DNA are classified into three categories: (1) direct action, (2) indirect action, and (3) decay effect. In this study, we focus on the decay effect exclusively. After a beta decay of substituted tritium in macromolecules to helium-3, the generated inert helium-3 is assumed to be deleted quickly. To get an insight into the decay effect to the damage of macromolecules, we perform molecular dynamics simulations of tritium-deleted macromolecules and analyze their structural change. Preliminary simulation results of decay effect on polymeric materials and DNA are presented.</p>

    DOI: 10.15748/jasse.6.94

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  • Overview of the JET preparation for deuterium-tritium operation with the ITER like-wall

    Joffrin, E., Abduallev, S., Abhangi, M., Abreu, P., Afanasev, V., Afzal, M., Aggarwal, K.M., Ahlgren, T., Aho-Mantila, L., Aiba, N., Airila, M., Alarcon, T., Albanese, R., Alegre, D., Aleiferis, S., Alessi, E., Aleynikov, P., Alkseev, A., Allinson, M., Alper, B., Alves, E., Ambrosino, G., Ambrosino, R., Amosov, V., Andersson Su, e}n, E., Andrews, R., Angelone, M., Anghel, M., Angioni, C., Appel, L., Appelbee, C., Arena, P., Ariola, M., Arshad, S., Artaud, J., Arter, W., Ash, A., Ashikawa, N., Aslanyan, V., Asunta, O., Asztalos, O., Auriemma, F., Austin, Y., Avotina, L., Axton, M., Ayres, C., Baciero, A., Baiao, D., Balboa, I., Balden, M., Balshaw, N., Bandaru, V.K., Banks, J., Baranov, Y.F., Barcellona, C., Barnard, T., Barnes, M., Barnsley, R., Baron Wiechec, A., Barrera Orte, L., Baruzzo, M., Basiuk, V., Bassan, M., Bastow, R., Batista, A., Batistoni, P., Baumane, L., Bauvir, B., Baylor, L., Beaumont, P.S., Beckers, M., Beckett, B., Bekris, N., Beldishevski, M., Bell, K., Belli, 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S., Gallart, D., Galvao, R., Gao, Y., Garcia, J., Garcia-Carrasco, A., Garcia-Munoz, M., Gardener, M., Garzotti, L., Gaspar, J., Gaudio, P., Gear, D., Gebhart, T., Gee, S., Geiger, B., Gelfusa, M., George, R., Gerasimov, S., Gervasini, G., Gethins, M., Ghani, Z., Ghate, M., Gherendi, M., Ghezzi, F., Giacalone, J.C., Giacomelli, L., Giacometti, G., Gibson, K., Giegerich, T., Gil, L., Gilbert, M.R., Gin, D., Giovannozzi, E., Giroud, C., Gl{\"o}ggler, S., Goff, J., Gohil, P., Goloborod{'}Ko, V., Goloborodko, V., Gomes, R., Goncalves, B., Goniche, M., Goodyear, A., Gorini, G., G{\"o}rler, T., Goulding, R., Goussarov, A., Graham, B., Graves, J.P., Greuner, H., Grierson, B., Griffiths, J., Griph, S., Grist, D., Groth, M., Grove, R., Gruca, M., Guard, D., Gu{\'e}rard, C., Guillemaut, C., Guirlet, R., Gulati, S., Gurl, C., Gutierrez-Milla, A., Utoh, H.H., Hackett, L., Hacquin, S., Hager, R., Hakola, A., Halitovs, M., Hall, S., Hallworth-Cook, S., Ham, C., Hamed, M., Hamilton, N., 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Jansons, J., Jaulmes, F., Jednor{\'o}g, S., Jenkins, I., Jepu, I., Johnson, T., Johnson, R., Johnston, J., Joita, L., Joly, J., Jonasson, E., Jones, T., Jones, C., Jones, L., Jones, G., Jones, N., Juvonen, M., Hoshino, K.K., Kallenbach, A., Kalsey, M., Kaltiaisenaho, T., Kamiya, K., Kaniewski, J., Kantor, A., Kappatou, A., Karhunen, J., Karkinsky, D., Kaufman, M., Kaveney, G., Kazakov, Y., Kazantzidis, V., Keeling, D.L., Keenan, F.P., Kempenaars, M., Kent, O., Kent, J., Keogh, K., Khilkevich, E., Kim, H.-T., Kim, H.T., King, R., King, D., Kinna, D.J., Kiptily, V., Kirk, A., Kirov, K., Kirschner, A., Kizane, G., Klas, M., Klepper, C., Klix, A., Knight, M., Knight, P., Knipe, S., Knott, S., Kobuchi, T., K{\"o}chl, F., Kocsis, G., Kodeli, I., Koechl, F., Kogut, D., Koivuranta, S., Kolesnichenko, Y., Kollo, Z., Kominis, Y., K{\"o}ppen, M., Korolczuk, S., Kos, B., Koslowski, H.R., Kotschenreuther, M., Koubiti, M., Kovaldins, R., Kovanda, O., Kowalska-Strz?ciwilk, E., Krasilnikov, A., Krasilnikov, V., Krawczyk, N., Kresina, M., Krieger, K., Krivska, A., Kruezi, U., Ksia?ek, I., Kukushkin, A., Kundu, A., Kurki-Suonio, T., Kwak, S., Kwon, O.J., Laguardia, L., Lahtinen, A., Laing, A., Lalousis, P., Lam, N., Lamb, C., Lambertz, H.T., Lang, P.T., Lanthaler, S., Lascas Neto, E., ?aszy?ska, E., Lawless, R., Lawson, K.D., Lazaros, A., Lazzaro, E., Leach, R., Learoyd, G., Leerink, S., Lefebvre, X., Leggate, H.J., Lehmann, J., Lehnen, M., Leichauer, P., Leichtle, D., Leipold, F., Lengar, I., Lennholm, M., Lepiavko, B., Leppanen, J., Lerche, E., Lescinskis, A., Lescinskis, B., Lesnoj, S., Leyland, M., Leysen, W., Li, Y., Li, L., Liang, Y., Likonen, J., Linke, J., Linsmeier, C., Lipschultz, B., Litaudon, X., Liu, G., Lloyd, B., Lo Schiavo, V.P., Loarer, T., Loarte, A., Lomanowski, B., Lomas, P.J., L{\"o}nnroth, J., L{\'o}pez, J.M., Lorenzini, R., Losada, U., Loughlin, M., Lowry, C., Luce, T., Lucock, R., Lukin, A., Luna, C., Lungaroni, M., Lungu, C.P., Lungu, M., Lunniss, A., Lunt, T., Lupelli, I., Lutsenko, V., Lyssoivan, A., Macheta, P., Macusova, E., Magesh, B., Maggi, C., Maggiora, R., Mahesan, S., Maier, H., Mailloux, J., Maingi, R., Makwana, R., Malaquias, A., Malinowski, K., Malizia, A., Manas, P., Manduchi, G., Manso, M.E., Mantica, P., Mantsinen, M., Manzanares, A., Maquet, P., Marandet, Y., Marcenko, N., Marchetto, C., Marchuk, O., Marconato, N., Mariani, A., Marin, M., Marinelli, M., Marinucci, M., Markovi?, T., Marocco, D., Marot, L., Marsh, J., Martin, A., Martin De Aguilera, A., Martin-Solis, J.R., Martone, R., Martynova, Y., Maruyama, S., Maslov, M., Matejcik, S., Mattei, M., Matthews, G.F., Matveev, D., Matveeva, E., Mauriya, A., Maviglia, F., May-Smith, T., Mayer, M., Mayoral, M.L., Mazon, D., Mazzotta, C., McAdams, R., McCarthy, P.J., McClements, K.G., McCormack, O., McCullen, P.A., McDonald, D., McHardy, M., McKean, R., McKehon, J., McNamee, L., Meadowcroft, C., Meakins, A., Medley, S., Meigh, S., Meigs, A.G., Meisl, G., Meiter, S., 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Nowak, S., Nunes, I., O{'}Gorman, T., O{'}Mullane, M., Oberkofler, M., Oberparleiter, M., Odupitan, T., Ogawa, M.T., Okabayashi, M., Oliver, H., Olney, R., Omoregie, L., Ongena, J., Orsitto, F., Orszagh, J., Osborne, T., Otin, R., Owen, A., Owen, T., Paccagnella, R., Packer, L.W., Pajuste, E., Pamela, S., Panja, S., Papp, P., Papp, G., Parail, V., Pardanaud, C., Parra Diaz, F., Parsloe, A., Parsons, N., Parsons, M., Pasqualotto, R., Passeri, M., Patel, A., Pathak, S., Patten, H., Pau, A., Pautasso, G., Pavlichenko, R., Pavone, A., Pawelec, E., Paz Soldan, C., Peackoc, A., Pehkonen, S.-P., Peluso, E., Penot, C., Penzo, J., Pepperell, K., Pereira, R., Perelli Cippo, E., Perez Von Thun, C., Pericoli, V., Peruzzo, S., Peterka, M., Petersson, P., Petravich, G., Petre, A., Petr?ilka, V., Philipps, V., Pigatto, L., Pillon, M., Pinches, S., Pintsuk, G., Piovesan, P., Pires De Sa, W., Pires Dos Reis, A., Piron, L., Piron, C., Pironti, A., Pisano, F., Pitts, R., Plyusnin, V., Poli, F.M., Pomaro, N., Pompilian, O.G., Pool, P., Popovichev, S., Poradzi?ski, M., Porfiri, M.T., Porosnicu, C., Porton, M., Possnert, G., Potzel, S., Poulipoulis, G., Powell, T., Prajapati, V., Prakash, R., Predebon, I., Prestopino, G., Price, D., Price, M., Price, R., Primetzhofer, D., Prior, P., Pucella, G., Puglia, P., Puiatti, M.E., Purahoo, K., Pusztai, I., P, u}tterich, T., Rachlew, E., Rack, M., Ragona, R., Rainford, M., Raj, P., Rakha, A., Ramogida, G., Ranjan, S., Rapson, C.J., Rasmussen, D., Rasmussen, J.J., Rathod, K., Ratt{\'a}, G., Ratynskaia, S., Ravera, G., Rebai, M., Reed, A., R{\'e}fy, D., Regana, J., Reich, M., Reid, N., Reimold, F., Reinhart, M., Reinke, M., Reiser, D., Rendell, D., Reux, C., Reyes Cortes, S.D.A., Reynolds, S., Ricci, D., Richiusa, M., Rigamonti, D., Rimini, F.G., Risner, J., Riva, M., Rivero-Rodriguez, J., Roach, C., Robins, R., Robinson, S., Robson, D., Rodionov, R., Rodrigues, P., Rodriguez, J., Rohde, V., Romanelli, M., Romanelli, F., Romanelli, S., Romazanov, J., 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    Nuclear Fusion   59 ( 11 )   2019

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  • Dust generation in tokamaks: Overview of beryllium and tungsten dust characterisation in JET with the ITER-like wall Reviewed

    M. Rubel, A. Widdowson, J. Grzonka, E. Fortuna-Zalesna, Sunwoo Moon, P. Petersson, N. Ashikawa, N. Asakura, D. Hamaguchi, Y. Hatano, K. Isobe, S. Masuzaki, H. Kurotaki, Y. Oya, M. Oyaidzu, M. Tokitani

    Fusion Engineering and Design   136   579 - 586   2018.11

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    V. Kh Alimov, Y. Hatano, K. Sugiyama, M. Zibrov, T. Schwarz-Selinger, W. Jacob

    Journal of Nuclear Materials   507   54 - 58   2018.8

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    Nuclear Materials and Energy   16   217 - 220   2018.8

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    DOI: 10.1016/j.nme.2018.06.018

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    Qilai Zhou, Keisuke Azuma, Akihiro Togari, Miyuki Yajima, Masayuki Tokitani, Suguru Masuzaki, Naoaki Yoshida, Masanori Hara, Yuji Hatano, Yasuhisa Oya

    Nuclear Materials and Energy   16   76 - 81   2018.8

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    DOI: 10.1016/j.nme.2018.06.012

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    Masanori Hara, Ryota Uchikawa, Yuji Hatano, Masao Matsuyama, Tsukasa Aso, Tomohiko Kawakami, Takeshi Ito

    Fusion Engineering and Design   131   125 - 129   2018.6

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    Journal of Nuclear Materials   502   1 - 8   2018.4

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    DOI: 10.1016/j.jnucmat.2018.01.060

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    Journal of Nuclear Materials   502   289 - 294   2018.4

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  • 14 MeV calibration of JET neutron detectors-phase 1: Calibration and characterization of the neutron source

    Litaudon, X., Abduallev, S., Abhangi, M., Abreu, P., Afzal, M., Aggarwal, K.M., Ahlgren, T., Ahn, J.H., Aho-Mantila, L., Aiba, N., Airila, M., Albanese, R., Aldred, V., Alegre, D., Alessi, E., Aleynikov, P., Alfier, A., Alkseev, A., Allinson, M., Alper, B., Alves, E., Ambrosino, G., Ambrosino, R., Amicucci, L., Amosov, V., Su, d{\'e}n, E.A., Angelone, M., Anghel, M., Angioni, C., Appel, L., Appelbee, C., Arena, P., Ariola, M., Arnichand, H., Arshad, S., Ash, A., Ashikawa, N., Aslanyan, V., Asunta, O., Auriemma, F., Austin, Y., Avotina, L., Axton, M.D., Ayres, C., Bacharis, M., Baciero, A., Bai{\~a}o, D., Bailey, S., Baker, A., Balboa, I., Balden, M., Balshaw, N., Bament, R., Banks, J.W., Baranov, Y.F., Barnard, M.A., Barnes, D., Barnes, M., Barnsley, R., Wiechec, A.B., Orte, L.B., Baruzzo, M., Basiuk, V., Bassan, M., Bastow, R., Batista, A., Batistoni, P., Baughan, R., Bauvir, B., Baylor, L., Bazylev, B., Beal, J., Beaumont, P.S., Beckers, M., Beckett, B., Becoulet, A., Bekris, N., Beldishevski, M., Bell, K., Belli, F., Bellinger, M., Belonohy, ?, Ayed, N.B., Benterman, N.A., Bergs?ker, H., Bernardo, J., Bernert, M., Berry, M., Bertalot, L., Besliu, C., Beurskens, M., Bieg, B., Bielecki, J., Biewer, T., Bigi, M., B{\'i}lkov{\'a}, P., Binda, F., Bisoffi, A., Bizarro, J.P.S., Bj{\"o}rkas, C., Blackburn, J., Blackman, K., Blackman, T.R., Blanchard, P., Blatchford, P., Bobkov, V., Boboc, A., Bo, a}r, G., Bogar, O., Bolshakova, I., Bolzonella, T., Bonanomi, N., Bonelli, F., Boom, J., Booth, J., Borba, D., Borodin, D., Borodkina, I., Botrugno, A., Bottereau, C., Boulting, P., Bourdelle, C., Bowden, M., Bower, C., Bowman, C., Boyce, T., Boyd, C., Boyer, H.J., Bradshaw, J.M.A., Braic, V., Bravanec, R., Breizman, B., Bremond, S., Brennan, P.D., Breton, S., Brett, A., Brezinsek, S., Bright, M.D.J., Brix, M., Broeckx, W., Brombin, M., Bros?awski, A., Brown, D.P.D., Brown, M., Bruno, E., Bucalossi, J., Buch, J., Buchanan, J., Buckley, M.A., Budny, R., Bufferand, H., Bulman, M., Bulmer, N., Bunting, P., Buratti, P., Burckhart, A., Buscarino, A., Busse, A., Butler, N.K., Bykov, I., Byrne, J., Cahyna, P., Calabr{\`o}, G., Calvo, I., Camenen, Y., Camp, P., Campling, D.C., Cane, J., Cannas, B., Capel, A.J., Card, P.J., Cardinali, A., Carman, P., Carr, M., Carralero, D., Carraro, L., Carvalho, B.B., Carvalho, I., Carvalho, P., Casson, F.J., Castaldo, C., Catarino, N., Caumont, J., Causa, F., Cavazzana, R., Cave-Ayland, K., Cavinato, M., Cecconello, M., Ceccuzzi, S., Cecil, E., Cenedese, A., Cesario, R., Challis, C.D., Chandler, M., Chandra, D., Chang, C.S., Chankin, A., Chapman, I.T., Chapman, S.C., Chernyshova, M., Chitarin, G., Ciraolo, G., Ciric, D., Citrin, J., Clairet, F., Clark, E., Clark, M., Clarkson, R., Clatworthy, D., Clements, C., Cleverly, M., Coad, J.P., Coates, P.A., Cobalt, A., Coccorese, V., Cocilovo, V., Coda, S., Coelho, R., Coenen, J.W., Coffey, I., Colas, L., Collins, S., Conka, D., Conroy, S., Conway, N., Coombs, D., Cooper, D., Cooper, S.R., Corradino, C., Corre, Y., Corrigan, G., Cortes, S., Coster, D., Couchman, A.S., Cox, M.P., Craciunescu, T., Cramp, S., Craven, R., Crisanti, F., Croci, G., Croft, D., Cromb{\'e}, K., Crowe, R., Cruz, N., Cseh, G., Cufar, A., Cullen, A., Curuia, M., Czarnecka, A., Dabirikhah, H., Dalgliesh, P., Dalley, S., Dankowski, J., Darrow, D., Davies, O., Davis, W., Day, C., Day, I.E., Bock, M.D., Castro, A., de la Cal, E., de la Luna, E., Masi, G.D., de Pablos, J.L., Temmerman, G.D., Tommasi, G.D., Vries, P., Deakin, K., Deane, J., Agostini, F.D., Dejarnac, R., Delabie, E., Harder, N.D., Dendy, R.O., Denis, J., Denner, P., Devaux, S., Devynck, P., Maio, F.D., Siena, A.D., Troia, C.D., Dinca, P., D?inca, R., Ding, B., Dittmar, T., Doerk, H., Doerner, R.P., Donn{\'e}, T., Dorling, S.E., Dormido-Canto, S., Doswon, S., Douai, D., Doyle, P.T., Drenik, A., Drewelow, P., Drews, P., Duckworth, P., Dumont, R., Dumortier, P., Dunai, D., Dunne, M., ?uran, I., Durodi{\'e}, F., Dutta, P., Duval, B.P., Dux, R., Dylst, K., Dzysiuk, N., Edappala, P.V., Edmond, J., Edwards, A.M., Edwards, J., Eich, T., Ekedahl, A., El-Jorf, R., Elsmore, C.G., Enachescu, M., Ericsson, G., Eriksson, F., Eriksson, J., Eriksson, L.G., Esposito, B., Esquembri, S., Esser, H.G., Esteve, D., Evans, B., Evans, G.E., Evison, G., Ewart, G.D., Fagan, D., Faitsch, M., Falie, D., Fanni, A., Fasoli, A., Faustin, J.M., Fawlk, N., Fazendeiro, L., Fedorczak, N., Felton, R.C., Fenton, K., Fernades, A., Fernandes, H., Ferreira, J., Fessey, J.A., F{\'e}vrier, O., Ficker, O., Field, A., Fietz, S., Figueiredo, A., Figueiredo, J., Fil, A., Finburg, P., Firdaouss, M., Fischer, U., Fittill, L., Fitzgerald, M., Flammini, D., Flanagan, J., Fleming, C., Flinders, K., Fonnesu, N., Fontdecaba, J.M., Formisano, A., Forsythe, L., Fortuna, L., Fortuna-Zalesna, E., Fortune, M., Foster, S., Franke, T., Franklin, T., Frasca, M., Frassinetti, L., Freisinger, M., Fresa, R., Frigione, D., Fuchs, V., Fuller, D., Futatani, S., Fyvie, J., G{\'a}l, K., Galassi, D., Ga??zka, K., Galdon-Quiroga, J., Gallagher, J., Gallart, D., Galv{\~a}o, R., Gao, X., Gao, Y., Garcia, J., Garcia-Carrasco, A., Garc{\'i}a-Mu, n}oz, M., Gardarein, J.-L., Garzotti, L., Gaudio, P., Gauthier, E., Gear, D.F., Gee, S.J., Geiger, B., Gelfusa, M., Gerasimov, S., Gervasini, G., Gethins, M., Ghani, Z., Ghate, M., Gherendi, M., Giacalone, J.C., Giacomelli, L., Gibson, C.S., Giegerich, T., Gil, C., Gil, L., Gilligan, S., Gin, D., Giovannozzi, E., Girardo, J.B., Giroud, C., Giruzzi, G., Gl{\"o}ggler, S., Godwin, J., Goff, J., Gohil, P., Goloborod?ko, V., Gomes, R., Gon?alves, B., Goniche, M., Goodliffe, M., Goodyear, A., Gorini, G., Gosk, M., Goulding, R., Goussarov, A., Gowland, R., Graham, B., Graham, M.E., Graves, J.P., Grazier, N., Grazier, P., Green, N.R., Greuner, H., Grierson, B., Griph, F.S., Grisolia, C., Grist, D., Groth, M., Grove, R., Grundy, C.N., Grzonka, J., Guard, D., Gu{\'e}rard, C., Guillemaut, C., Guirlet, R., Gurl, C., Utoh, H.H., Hackett, L.J., Hacquin, S., Hagar, A., Hager, R., Hakola, A., Halitovs, M., Hall, S.J., Cook, S.P.H., Hamlyn-Harris, C., Hammond, K., Harrington, C., Harrison, J., Harting, D., Hasenbeck, F., Hatano, Y., Hatch, D.R., Haupt, T.D.V., Hawes, J., Hawkes, N.C., Hawkins, J., Hawkins, P., Haydon, P.W., Hayter, N., Hazel, S., Heesterman, P.J.L., Heinola, K., Hellesen, C., Hellsten, T., Helou, W., Hemming, O.N., Hender, T.C., Henderson, M., Henderson, S.S., Henriques, R., Hepple, D., Hermon, G., Hertout, P., Hidalgo, C., Highcock, E.G., Hill, M., Hillairet, J., Hillesheim, J., Hillis, D., Hizanidis, K., Hjalmarsson, A., Hobirk, J., Hodille, E., Hogben, C.H.A., Hogeweij, G.M.D., Hollingsworth, A., Hollis, S., Homfray, D.A., Hor{\'a}?ek, J., Hornung, G., Horton, A.R., Horton, L.D., Horvath, L., Hotchin, S.P., Hough, M.R., Howarth, P.J., Hubbard, A., Huber, A., Huber, V., Huddleston, T.M., Hughes, M., Huijsmans, G.T.A., Hunter, C.L., Huynh, P., Hynes, A.M., Iglesias, D., Imazawa, N., Imbeaux, F., Imr{\'i}?ek, M., Incelli, M., Innocente, P., Irishkin, M., Ivanova-Stanik, I., Jachmich, S., Jacobsen, A.S., Jacquet, P., Jansons, J., Jardin, A., J, rvinen, A., Jaulmes, F., Jednor{\'o}g, S., Jenkins, I., Jeong, C., Jepu, I., Joffrin, E., Johnson, R., Johnson, T., Johnston, J., Joita, L., Jones, G., Jones, T.T.C., Hoshino, K.K., Kallenbach, A., Kamiya, K., Kaniewski, J., Kantor, A., Kappatou, A., Karhunen, J., Karkinsky, D., Karnowska, I., Kaufman, M., Kaveney, G., Kazakov, Y., Kazantzidis, V., Keeling, D.L., Keenan, T., Keep, J., Kempenaars, M., Kennedy, C., Kenny, D., Kent, J., Kent, O.N., Khilkevich, E., Kim, H.T., Kim, H.S., Kinch, A., King, C., King, D., King, R.F., Kinna, D.J., Kiptily, V., Kirk, A., Kirov, K., Kirschner, A., Kizane, G., Klepper, C., Klix, A., Knight, P., Knipe, S.J., Knott, S., Kobuchi, T., K{\"o}chl, F., Kocsis, G., Kodeli, I., Kogan, L., Kogut, D., Koivuranta, S., Kominis, Y., K{\"o}ppen, M., Kos, B., Koskela, T., Koslowski, H.R., Koubiti, M., Kovari, M., Kowalska-Strz?ciwilk, E., Krasilnikov, A., Krasilnikov, V., Krawczyk, N., Kresina, M., Krieger, K., Krivska, A., Kruezi, U., Ksi??ek, I., Kukushkin, A., Kundu, A., Kurki-Suonio, T., Kwak, S., Kwiatkowski, R., Kwon, O.J., Laguardia, L., Lahtinen, A., Laing, A., Lam, N., Lambertz, H.T., Lane, C., Lang, P.T., Lanthaler, S., Lapins, J., Lasa, A., Last, J.R., ?aszy?ska, E., Lawless, R., Lawson, A., Lawson, K.D., Lazaros, A., Lazzaro, E., Leddy, J., Lee, S., Lefebvre, X., Leggate, H.J., Lehmann, J., Lehnen, M., Leichtle, D., Leichuer, P., Leipold, F., Lengar, I., Lennholm, M., Lerche, E., Lescinskis, A., Lesnoj, S., Letellier, E., Leyland, M., Leysen, W., Li, L., Liang, Y., Likonen, J., Linke, J., Linsmeier, C., Lipschultz, B., Liu, G., Liu, Y., Schiavo, V.P.L., Loarer, T., Loarte, A., Lobel, R.C., Lomanowski, B., Lomas, P.J., L{\"o}nnroth, J., L{\'o}pez, J.M., L{\'o}pez-Razola, J., Lorenzini, R., Losada, U., Lovell, J.J., Loving, A.B., Lowry, C., Luce, T., Lucock, R.M.A., Lukin, A., Luna, C., Lungaroni, M., Lungu, C.P., Lungu, M., Lunniss, A., Lupelli, I., Lyssoivan, A., Macdonald, N., Macheta, P., Maczewa, K., Magesh, B., Maget, P., Maggi, C., Maier, H., Mailloux, J., Makkonen, T., Makwana, R., Malaquias, A., Malizia, A., Manas, P., Manning, A., Manso, M.E., Mantica, P., Mantsinen, M., Manzanares, A., Maquet, P., Marandet, Y., Marcenko, N., Marchetto, C., Marchuk, O., Marinelli, M., Marinucci, M., Markovi?, T., Marocco, D., Marot, L., Marren, C.A., Marshal, R., Martin, A., Martin, Y., Mart{\'i}n de Aguilera, A., Mart{\'i}nez, F.J., Mart{\'i}n-Sol{\'i}s, J.R., Martynova, Y., Maruyama, S., Masiello, A., Maslov, M., Matejcik, S., Mattei, M., Matthews, G.F., Maviglia, F., Mayer, M., Mayoral, M.L., May-Smith, T., Mazon, D., Mazzotta, C., McAdams, R., McCarthy, P.J., McClements, K.G., McCormack, O., McCullen, P.A., McDonald, D., McIntosh, S., McKean, R., McKehon, J., Meadows, R.C., Meakins, A., Medina, F., Medland, M., Medley, S., Meigh, S., Meigs, A.G., Meisl, G., Meitner, S., Meneses, L., Menmuir, S., Mergia, K., Merrigan, I.R., Mertens, P., Meshchaninov, S., Messiaen, A., Meyer, H., Mianowski, S., Michling, R., Middleton-Gear, D., Miettunen, J., Militello, F., Militello-Asp, E., Miloshevsky, G., Mink, F., Minucci, S., Miyoshi, Y., Mlyn{\'a}?, J., Molina, D., Monakhov, I., Moneti, M., Mooney, R., Moradi, S., Mordijck, S., Moreira, L., Moreno, R., Moro, F., Morris, A.W., Morris, J., Moser, L., Mosher, S., Moulton, D., Murari, A., Muraro, A., Murphy, S., Asakura, N.N., Na, Y.S., Nabais, F., Naish, R., Nakano, T., Nardon, E., Naulin, V., Nave, M.F.F., Nedzelski, I., Nemtsev, G., Nespoli, F., Neto, A., Neu, R., Neverov, V.S., Newman, M., Nicholls, K.J., Nicolas, T., Nielsen, A.H., Nielsen, P., Nilsson, E., Nishijima, D., Noble, C., Nocente, M., Nodwell, D., Nordlund, K., Nordman, H., Nouailletas, R., Nunes, I., Oberkofler, M., Odupitan, T., Ogawa, M.T., O?gorman, T., Okabayashi, M., Olney, R., Omolayo, O., O?mullane, M., Ongena, J., Orsitto, F., Orszagh, J., Oswuigwe, B.I., Otin, R., Owen, A., Paccagnella, R., Pace, N., Pacella, D., Packer, L.W., Page, A., Pajuste, E., Palazzo, S., Pamela, S., Panja, S., Papp, P., Paprok, R., Parail, V., Park, M., Diaz, F.P., Parsons, M., Pasqualotto, R., Patel, A., Pathak, S., Paton, D., Patten, H., Pau, A., Pawelec, E., Soldan, C.P., Peackoc, A., Pearson, I.J., Pehkonen, S.-P., Peluso, E., Penot, C., Pereira, A., Pereira, R., Puglia, P.P.P., Perez von Thun, C., Peruzzo, S., Peschanyi, S., Peterka, M., Petersson, P., Petravich, G., Petre, A., Petrella, N., Petr?ilka, V., Peysson, Y., Pfefferl{\'e}, D., Philipps, V., Pillon, M., Pintsuk, G., Piovesan, P., Pires Dos Reis, A., Piron, L., Pironti, A., Pisano, F., Pitts, R., Pizzo, F., Plyusnin, V., Pomaro, N., Pompilian, O.G., Pool, P.J., Popovichev, S., Porfiri, M.T., Porosnicu, C., Porton, M., Possnert, G., Potzel, S., Powell, T., Pozzi, J., Prajapati, V., Prakash, R., Prestopino, G., Price, D., Price, M., Price, R., Prior, P., Proudfoot, R., Pucella, G., Puglia, P., Puiatti, M.E., Pulley, D., Purahoo, K., P, u}tterich, T., Rachlew, E., Rack, M., Ragona, R., Rainford, M.S.J., Rakha, A., Ramogida, G., Ranjan, S., Rapson, C.J., Rasmussen, J.J., Rathod, K., Ratt{\'a}, G., Ratynskaia, S., Ravera, G., Rayner, C., Rebai, M., Reece, D., Reed, A., R{\'e}fy, D., Regan, B., Rega{\~n}a, J., Reich, M., Reid, N., Reimold, F., Reinhart, M., Reinke, M., Reiser, D., Rendell, D., Reux, C., Cortes, S.D.A.R., Reynolds, S., Riccardo, V., Richardson, N., Riddle, K., Rigamonti, D., Rimini, F.G., Risner, J., Riva, M., Roach, C., Robins, R.J., Robinson, S.A., Robinson, T., Robson, D.W., Roccella, R., Rodionov, R., Rodrigues, P., Rodriguez, J., Rohde, V., Romanelli, F., Romanelli, M., Romanelli, S., Romazanov, J., Rowe, S., Rubel, M., Rubinacci, G., Rubino, G., Ruchko, L., Ruiz, M., Ruset, C., Rzadkiewicz, J., Saarelma, S., Sabot, R., Safi, E., Sagar, P., Saibene, G., Saint-Laurent, F., Salewski, M., Salmi, A., Salmon, R., Salzedas, F., Samaddar, D., Samm, U., Sandiford, D., Santa, P., Santala, M.I.K., Santos, B., Santucci, A., Sartori, F., Sartori, R., Sauter, O., Scannell, R., Schlummer, T., Schmid, K., Schmidt, V., Schmuck, S., Schneider, M., Sch{\"o}pf, K., Schw{\"o}rer, D., Scott, S.D., Sergienko, G., Sertoli, M., Shabbir, A., Sharapov, S.E., Shaw, A., Shaw, R., Sheikh, H., Shepherd, A., Shevelev, A., Shumack, A., Sias, G., Sibbald, M., Sieglin, B., Silburn, S., Silva, A., Silva, C., Simmons, P.A., Simpson, J., Simpson-Hutchinson, J., Sinha, A., Sipil{\"a}, S.K., Sips, A.C.C., Sir{\'e}n, P., Sirinelli, A., Sj{\"o}strand, H., Skiba, M., Skilton, R., Slabkowska, K., Slade, B., Smith, N., Smith, P.G., Smith, R., Smith, T.J., Smithies, M., Snoj, L., Soare, S., Solano, E.R., Somers, A., Sommariva, C., Sonato, P., Sopplesa, A., Sousa, J., Sozzi, C., Spagnolo, S., Spelzini, T., Spineanu, F., Stables, G., Stamatelatos, I., Stamp, M.F., Staniec, P., Stank?nas, G., Stan-Sion, C., Stead, M.J., Stefanikova, E., Stepanov, I., Stephen, A.V., Stephen, M., Stevens, A., Stevens, B.D., Strachan, J., Strand, P., Strauss, H.R., Str{\"o}m, P., Stubbs, G., Studholme, W., Subba, F., Summers, H.P., Svensson, J., widerski, ?, Szabolics, T., Szawlowski, M., Szepesi, G., Suzuki, T.T., T{\'a}l, B., Tala, T., Talbot, A.R., Talebzadeh, S., Taliercio, C., Tamain, P., Tame, C., Tang, W., Tardocchi, M., Taroni, L., Taylor, D., Taylor, K.A., Tegnered, D., Telesca, G., Teplova, N., Terranova, D., Testa, D., Tholerus, E., Thomas, J., Thomas, J.D., Thomas, P., Thompson, A., Thompson, C.-A., Thompson, V.K., Thorne, L., Thornton, A., Thrys?e, A.S., Tigwell, P.A., Tipton, N., Tiseanu, I., Tojo, H., Tokitani, M., Tolias, P., Tome?, M., Tonner, P., nd To, drow, M., Trimble, P., Tripsky, M., Tsalas, M., Tsavalas, P., Jun, D.T., Turner, I., Turner, M.M., Turnyanskiy, M., Tvalashvili, G., Tyrrell, S.G.J., Uccello, A., Ul-Abidin, Z., Uljanovs, J., Ulyatt, D., Urano, H., Uytdenhouwen, I., Vadgama, A.P., Valcarcel, D., Valentinuzzi, M., Valisa, M., Olivares, P.V., Valovic, M., Van De Mortel, M., Eester, D.V., Renterghem, W.V., Rooij, G.J., Varje, J., Varoutis, S., Vartanian, S., Vasava, K., Vasilopoulou, T., Vega, J., Verdoolaege, G., Verhoeven, R., Verona, C., Rinati, G.V., Veshchev, E., Vianello, N., Vicente, J., Viezzer, E., Villari, S., Villone, F., Vincenzi, P., Vinyar, I., Viola, B., Vitins, A., Vizvary, Z., Vlad, M., Voitsekhovitch, I., V, a}?ek, P., Vora, N., Vu, T., Pires de Sa, W., W, Wakeling, B., Waldon, C.W.F., Walkden, N., Walker, M., Walker, R., Walsh, M., Wang, E., Wang, N., Warder, S., Warren, R.J., Waterhouse, J., Watkins, N.W., Watts, C., Wauters, T., Weckmann, A., Weiland, J., Weisen, H., Weiszflog, M., Wellstood, C., West, A.T., Wheatley, M.R., Whetham, S., Whitehead, A.M., Whitehead, B.D., Widdowson, A.M., Wiesen, S., Wilkinson, J., Williams, J., Williams, M., Wilson, A.R., Wilson, D.J., Wilson, H.R., Wilson, J., Wischmeier, M., Withenshaw, G., Withycombe, A., Witts, D.M., Wood, D., Wood, R., Woodley, C., Wray, S., Wright, J., Wright, J.C., Wu, J., Wukitch, S., Wynn, A., Xu, T., Yadikin, D., Yanling, W., Yao, L., Yavorskij, V., Yoo, M.G., Young, C., Young, D., Young, I.D., Young, R., Zacks, J., Zagorski, R., Zaitsev, F.S., Zanino, R., Zarins, A., Zastrow, K.D., Zerbini, M., Zhang, W., Zhou, Y., Zilli, E., Zoita, V., Zoletnik, S., Zychor, I.

    Nuclear Fusion   58 ( 2 )   2018

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    DOI: 10.1016/j.jnucmat.2017.04.041

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    Fusion Science and Technology   71 ( 3 )   261 - 267   2017.4

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    Fusion Engineering and Design   116   1 - 4   2017.3

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    Fusion Science and Technology   71 ( 3 )   261 - 267   2017.3

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    DOI: 10.1080/15361055.2017.1288423

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    Kazakov, Y.O., Ongena, J., Wright, J.C., Wukitch, S.J., Lerche, E., Mantsinen, M.J., Van Eester, D., Craciunescu, T., Kiptily, V.G., Lin, Y., Nocente, M., Nabais, F., Nave, M.F.F., Baranov, Y., Bielecki, J., Bilato, R., Bobkov, V., Cromb{\'e}, K., Czarnecka, A., Faustin, J.M., Felton, R., Fitzgerald, M., Gallart, D., Giacomelli, L., Golfinopoulos, T., Hubbard, A.E., Jacquet, Ph, Johnson, T., Lennholm, M., Loarer, T., Porkolab, M., Sharapov, S.E., Valcarcel, D., Van Schoor, M., Weisen, H., Marmar, E.S., Baek, S.G., Barnard, H., Bonoli, P., Brunner, D., Candy, J., Canik, J., Churchill, R.M., Cziegler, I., Dekow, G., Delgado-Aparicio, L., Diallo, A., Edlund, E., Ennever, P., Faust, I., Fiore, C., Gao, C., Greenwald, M., Hartwig, Z.S., Holland, C., Hughes, J.W., Hutchinson, I.H., Irby, J., LaBombard, B., Lipschultz, B., Loarte, A., Mumgaard, R., Parker, R.R., Reinke, M.L., Rice, J.E., Scott, S., Shiraiwa, S., Snyder, P., Sorbom, B., Terry, D., Terry, J.L., Theiler, C., Vieira, R., Walk, J.R., Wallace, G.M., White, A., Whyte, D., Wolfe, S.M., Wright, G.M., Wright, J., Xu, P., Abduallev, S., Abhangi, M., Abreu, P., Afzal, M., Aggarwal, K.M., Ahlgren, T., Ahn, J.H., Aho-Mantila, L., Aiba, N., Airila, M., Albanese, R., Aldred, V., Alegre, D., Alessi, E., Aleynikov, P., Alfier, A., Alkseev, A., Allinson, M., Alper, B., Alves, E., Ambrosino, G., Ambrosino, R., Amicucci, L., Amosov, V., Andersson Su, e}n, E., Angelone, M., Anghel, M., Angioni, C., Appel, L., Appelbee, C., Arena, P., Ariola, M., Arnichand, H., Arshad, S., Ash, A., Ashikawa, N., Aslanyan, V., Asunta, O., Auriemma, F., Austin, Y., Avotina, L., Axton, M.D., Ayres, C., Bacharis, M., Baciero, A., Bai{\~a}o, D., Bailey, S., Baker, A., Balboa, I., Balden, M., Balshaw, N., Bament, R., Banks, J.W., Barnard, M.A., Barnes, D., Barnes, M., Barnsley, R., Baron Wiechec, A., Barrera Orte, L., Baruzzo, M., Basiuk, V., Bassan, M., Bastow, R., Batista, A., Batistoni, P., Baughan, R., Bauvir, B., Baylor, L., Bazylev, B., Beal, J., Beaumont, P.S., Beckers, M., Beckett, B., Becoulet, A., Bekris, N., Beldishevski, M., Bell, K., Belli, F., Bellinger, M., Belonohy, E., Ben Ayed, N., Benterman, N.A., Bergs?ker, H., Bernardo, J., Bernert, M., Berry, M., Bertalot, L., Besliu, C., Beurskens, M., Bieg, B., Biewer, T., Bigi, M., B{\'i}lkov{\'a}, P., Binda, F., Bisoff, A., Bizarro, J.P.S., Bj{\"o}rkas, C., Blackburn, J., Blackman, K., Blackman, T.R., Blanchard, P., Blatchford, P., Boboc, A., Bo, a}r, G., Bogar, O., Bolshakova, I., Bolzonella, T., Bonanomi, N., Bonelli, F., Boom, J., Booth, J., Borba, D., Borodin, D., Borodkina, I., Botrugno, A., Bottereau, C., Boulting, P., Bourdelle, C., Bowden, M., Bower, C., Bowman, C., Boyce, T., Boyd, C., Boyer, H.J., Bradshaw, J.M.A., Braic, V., Bravanec, R., Breizman, B., Bremond, S., Brennan, P.D., Breton, S., Brett, A., Brezinsek, S., Bright, M.D.J., Brix, M., Broeckx, W., Brombin, M., Broslawski, A., Brown, D.P.D., Brown, M., Bruno, E., Bucalossi, J., Buch, J., Buchanan, J., Buckley, M.A., Budny, R., Bufferand, H., Bulman, M., Bulmer, N., Bunting, P., Buratti, P., Burckhart, A., Buscarino, A., Busse, A., Butler, N.K., Bykov, I., Byrne, J., Cahyna, P., Calabro, G., Calvo, I., Camenen, Y., Camp, P., Campling, D.C., Cane, J., Cannas, B., Capel, A.J., Card, P.J., Cardinali, A., Carman, P., Carr, M., Carralero, D., Carraro, L., Carvalho, B.B., Carvalho, I., Carvalho, P., Casson, F.J., Castaldo, C., Catarino, N., Caumont, J., Causa, F., Cavazzana, R., Cave-Ayland, K., Cavinato, M., Cecconello, M., Ceccuzzi, S., Cecil, E., Cenedese, A., Cesario, R., Challis, C.D., Chandler, M., Chandra, D., Chang, C.S., Chankin, A., Chapman, I.T., Chapman, S.C., Chernyshova, M., Chitarin, G., Ciraolo, G., Ciric, D., Citrin, J., Clairet, F., Clark, E., Clark, M., Clarkson, R., Clatworthy, D., Clements, C., Cleverly, M., Coad, J.P., Coates, P.A., Cobalt, A., Coccorese, V., Cocilovo, V., Coda, S., Coelho, R., Coenen, J.W., Coffey, I., Colas, L., Collins, S., Conka, D., Conroy, S., Conway, N., Coombs, D., Cooper, D., Cooper, S.R., Corradino, C., Corre, Y., Corrigan, G., Cortes, S., Coster, D., Couchman, A.S., Cox, M.P., Cramp, S., Craven, R., Crisanti, F., Croci, G., Croft, D., Crowe, R., Cruz, N., Cseh, G., Cufar, A., Cullen, A., Curuia, M., Dabirikhah, H., Dalgliesh, P., Dalley, S., Dankowski, J., Darrow, D., Davies, O., Davis, W., Day, C., Day, I.E., De Bock, M., De Castro, A., De La Cal, E., De La Luna, E., De Masi, G., De Pablos, J.L., De Temmerman, G., De Tommasi, G., De Vries, P., Deakin, K., Deane, J., Degli Agostini, F., Dejarnac, R., Delabie, E., Den Harder, N., Dendy, R.O., Denis, J., Denner, P., Devaux, S., Devynck, P., Di Maio, F., Di Siena, A., Di Troia, C., Dinca, P., D{'}Inca, R., Ding, B., Dittmar, T., Doerk, H., Doerner, R.P., Donn{\'e}, T., Dorling, S.E., Dormido-Canto, S., Doswon, S., Douai, D., Doyle, P.T., Drenik, A., Drewelow, P., Drews, P., Duckworth, Ph, Dumont, R., Dumortier, P., Dunai, D., Dunne, M., Duran, I., Durodi{\'e}, F., 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Fuller, D., Futatani, S., Fyvie, J., G{\'a}l, K., Galassi, D., Ga?azka, K., Galdon-Quiroga, J., Gallagher, J., Gallart, D., Galv{\'a}o, R., Gao, X., Gao, Y., Garcia, J., Garcia-Carrasco, A., Garc{\'i}a-Mu, n}oz, M., Gardarein, J.-L., Garzotti, L., Gaudio, P., Gauthier, E., Gear, D.F., Gee, S.J., Geiger, B., Gelfusa, M., Gerasimov, S., Gervasini, G., Gethins, M., Ghani, Z., Ghate, M., Gherendi, M., Giacalone, J.C., Giacomelli, L., Gibson, C.S., Giegerich, T., Gil, C., Gil, L., Gilligan, S., Gin, D., Giovannozzi, E., Girardo, J.B., Giroud, C., Giruzzi, G., Gl{\"o}ggler, S., Godwin, J., Goff, J., Gohil, P., Goloborod{'}Ko, V., Gomes, R., Goncalves, B., Goniche, M., Goodliffe, M., Goodyear, A., Gorini, G., Gosk, M., Goulding, R., Goussarov, A., Gowland, R., Graham, B., Graham, M.E., Graves, J.P., Grazier, N., Grazier, P., Green, N.R., Greuner, H., Grierson, B., Griph, F.S., Grisolia, C., Grist, D., Groth, M., Grove, R., Grundy, C.N., Grzonka, J., Guard, D., Gu{\'e}rard, C., Guillemaut, C., Guirlet, R., Gurl, C., Utoh, H.H., Hackett, L.J., Hacquin, S., Hagar, A., Hager, R., Hakola, A., Halitovs, M., Hall, S.J., Hallworth Cook, S.P., Hamlyn-Harris, C., Hammond, K., Harrington, C., Harrison, J., Harting, D., Hasenbeck, F., Hatano, Y., Hatch, D.R., Haupt, T.D.V., Hawes, J., Hawkes, N.C., Hawkins, J., Hawkins, P., Haydon, P.W., Hayter, N., Hazel, S., Heesterman, P.J.L., Heinola, K., Hellesen, C., Hellsten, T., Helou, W., Hemming, O.N., Hender, T.C., Henderson, M., Henderson, S.S., Henriques, R., Hepple, D., Hermon, G., Hertout, P., Hidalgo, C., Highcock, E.G., Hill, M., Hillairet, J., Hillesheim, J., Hillis, D., Hizanidis, K., Hjalmarsson, A., Hobirk, J., Hodille, E., Hogben, C.H.A., Hogeweij, G.M.D., Hollingsworth, A., Hollis, S., Homfray, D.A., Hor{\'a}?ek, J., Hornung, G., Horton, A.R., Horton, L.D., Horvath, L., Hotchin, S.P., Hough, M.R., Howarth, P.J., Hubbard, A., Huber, A., Huber, V., Huddleston, T.M., Hughes, M., Huijsmans, G.T.A., Hunter, C.L., Huynh, P., Hynes, A.M., Iglesias, D., Imazawa, N., Imbeaux, F., Imr{\'i}?ek, M., Incelli, M., Innocente, P., Irishkin, M., Ivanova-Stanik, I., Jachmich, S., Jacobsen, A.S., Jacquet, P., Jansons, J., Jardin, A., J, rvinen, A., Jaulmes, F., Jednor{\'o}g, S., Jenkins, I., Jeong, C., Jepu, I., Joffrin, E., Johnson, R., Johnson, T., Johnston, J., Joita, L., Jones, G., Jones, T.T.C., Hoshino, K.K., Kallenbach, A., Kamiya, K., Kaniewski, J., Kantor, A., Kappatou, A., Karhunen, J., Karkinsky, D., Karnowska, I., Kaufman, M., Kaveney, G., Kazakov, Y., Kazantzidis, V., Keeling, D.L., Keenan, T., Keep, J., Kempenaars, M., Kennedy, C., Kenny, D., Kent, J., Kent, O.N., Khilkevich, E., Kim, H.T., Kim, H.S., Kinch, A., King, C., King, D., King, R.F., Kinna, D.J., Kiptily, V., Kirk, A., Kirov, K., Kirschner, A., Kizane, G., Klepper, C., Klix, A., Knight, P., Knipe, S.J., Knott, S., Kobuchi, T., K{\"o}chl, F., Kocsis, G., Kodeli, I., Kogan, L., Kogut, D., Koivuranta, S., Kominis, Y., K{\"o}ppen, M., Kos, B., Koskela, T., Koslowski, H.R., Koubiti, M., Kovari, M., Kowalska-Strz?ciwilk, E., Krasilnikov, A., Krasilnikov, V., Krawczyk, N., Kresina, M., Krieger, K., Krivska, A., Kruezi, U., Ksia?ek, I., Kukushkin, A., Kundu, A., Kurki-Suonio, T., Kwak, S., Kwiatkowski, R., Kwon, O.J., Laguardia, L., Lahtinen, A., Laing, A., Lam, N., Lambertz, H.T., Lane, C., Lang, P.T., Lanthaler, S., Lapins, J., Lasa, A., Last, J.R., ?aszy?ska, E., Lawless, R., Lawson, A., Lawson, K.D., Lazaros, A., Lazzaro, E., Leddy, J., Lee, S., Lefebvre, X., Leggate, H.J., Lehmann, J., Lehnen, M., Leichtle, D., Leichuer, P., Leipold, F., Lengar, I., Lennholm, M., Lerche, E., Lescinskis, A., Lesnoj, S., Letellier, E., Leyland, M., Leysen, W., Li, L., Liang, Y., Likonen, J., Linke, J., Linsmeier, C., Lipschultz, B., Liu, G., Liu, Y., Lo Schiavo, V.P., Loarer, T., Loarte, A., Lobel, R.C., Lomanowski, B., Lomas, P.J., L{\"o}nnroth, J., L{\'o}pez, J.M., L{\'o}pez-Razola, J., Lorenzini, R., Losada, U., Lovell, J.J., Loving, A.B., Lowry, C., Luce, T., Lucock, R.M.A., Lukin, A., Luna, C., Lungaroni, M., Lungu, C.P., Lungu, M., Lunniss, A., Lupelli, I., Lyssoivan, A., Macdonald, N., Macheta, P., Maczewa, K., Magesh, B., Maget, P., Maggi, C., Maier, H., Mailloux, J., Makkonen, T., Makwana, R., Malaquias, A., Malizia, A., Manas, P., Manning, A., Manso, M.E., Mantica, P., Mantsinen, M., Manzanares, A., Maquet, P., Marandet, Y., Marcenko, N., Marchetto, C., Marchuk, O., Marinelli, M., Marinucci, M., Markovi?, T., Marocco, D., Marot, L., Marren, C.A., Marshal, R., Martin, A., Martin, Y., Mart{\'i}n De Aguilera, A., Mart{\'i}nez, F.J., Mart{\'i}n-Sol{\'i}s, J.R., Martynova, Y., Maruyama, S., Masiello, A., Maslov, M., Matejcik, S., Mattei, M., Matthews, G.F., Maviglia, F., Mayer, M., Mayoral, M.L., May-Smith, T., Mazon, D., Mazzotta, C., McAdams, R., McCarthy, P.J., McClements, K.G., McCormack, O., McCullen, P.A., McDonald, D., McIntosh, S., McKean, R., McKehon, J., Meadows, R.C., Meakins, A., Medina, F., Medland, M., Medley, S., Meigh, S., Meigs, A.G., Meisl, G., Meitner, S., Meneses, L., Menmuir, S., Mergia, K., Merrigan, I.R., Mertens, P., Meshchaninov, S., Messiaen, A., Meyer, H., Mianowski, S., Michling, R., Middleton-Gear, D., Miettunen, J., Militello, F., Militello-Asp, E., Miloshevsky, G., Mink, F., Minucci, S., Miyoshi, Y., Mlyn{\'a}?, J., Molina, D., Monakhov, I., Moneti, M., Mooney, R., Moradi, S., Mordijck, S., Moreira, L., Moreno, R., Moro, F., Morris, A.W., Morris, J., Moser, L., Mosher, S., Moulton, D., Murari, A., Muraro, A., Murphy, S., Asakura, N.N., Na, Y.S., Nabais, F., Naish, R., Nakano, T., Nardon, E., Naulin, V., Nave, M.F.F., Nedzelski, I., Nemtsev, G., Nespoli, F., Neto, A., Neu, R., Neverov, V.S., Newman, M., Nicholls, K.J., Nicolas, T., Nielsen, A.H., Nielsen, P., Nilsson, E., Nishijima, D., Noble, C., Nocente, M., Nodwell, D., Nordlund, K., Nordman, H., Nouailletas, R., Nunes, I., Oberkofler, M., Odupitan, T., Ogawa, M.T., O{'}Gorman, T., Okabayashi, M., Olney, R., Omolayo, O., O{'}Mullane, M., Ongena, J., Orsitto, F., Orszagh, J., Oswuigwe, B.I., Otin, R., Owen, A., Paccagnella, R., Pace, N., Pacella, D., Packer, L.W., Page, A., Pajuste, E., Palazzo, S., Pamela, S., Panja, S., Papp, P., Paprok, R., Parail, V., Park, M., Parra Diaz, F., Parsons, M., Pasqualotto, R., Patel, A., Pathak, S., Paton, D., Patten, H., Pau, A., Pawelec, E., Paz Soldan, C., Peackoc, A., Pearson, I.J., Pehkonen, S.-P., Peluso, E., Penot, C., Pereira, A., Pereira, R., Pereira Puglia, P.P., Perez Von Thun, C., Peruzzo, S., Peschanyi, S., Peterka, M., Petersson, P., Petravich, G., Petre, A., Petrella, N., Petr?ilka, V., Peysson, Y., Pfefferl{\'e}, D., Philipps, V., Pillon, M., Pintsuk, G., Piovesan, P., Pires Dos Reis, A., Piron, L., Pironti, A., Pisano, F., Pitts, R., Pizzo, F., Plyusnin, V., Pomaro, N., Pompilian, O.G., Pool, P.J., Popovichev, S., Porfiri, M.T., Porosnicu, C., Porton, M., Possnert, G., Potzel, S., Powell, T., Pozzi, J., Prajapati, V., Prakash, R., Prestopino, G., Price, D., Price, M., Price, R., Prior, P., Proudfoot, R., Pucella, G., Puglia, P., Puiatti, M.E., Pulley, D., Purahoo, K., P, u}tterich, T., Rachlew, E., Rack, M., Ragona, R., Rainford, M.S.J., Rakha, A., Ramogida, G., Ranjan, S., Rapson, C.J., Rasmussen, J.J., Rathod, K., Ratt{\'a}, G., Ratynskaia, S., Ravera, G., Rayner, C., Rebai, M., Reece, D., Reed, A., R{\'e}fy, D., Regan, B., Rega{\~n}a, J., Reich, M., Reid, N., Reimold, F., Reinhart, M., Reinke, M., Reiser, D., Rendell, D., Reux, C., Reyes Cortes, S.D.A., Reynolds, S., Riccardo, V., Richardson, N., Riddle, K., Rigamonti, D., Rimini, F.G., Risner, J., Riva, M., Roach, C., Robins, R.J., Robinson, S.A., Robinson, T., Robson, D.W., Roccella, R., Rodionov, R., Rodrigues, P., Rodriguez, J., Rohde, V., Romanelli, F., Romanelli, M., Romanelli, S., Romazanov, J., Rowe, S., Rubel, M., Rubinacci, G., Rubino, G., Ruchko, L., Ruiz, M., Ruset, C., Rzadkiewicz, J., Saarelma, S., Sabot, R., Safi, E., Sagar, P., Saibene, G., Saint-Laurent, F., Salewski, M., Salmi, A., Salmon, R., Salzedas, F., Samaddar, D., Samm, U., Sandiford, D., Santa, P., Santala, M.I.K., Santos, B., Santucci, A., Sartori, F., Sartori, R., Sauter, O., Scannell, R., Schlummer, T., Schmid, K., Schmidt, V., Schmuck, S., Schneider, M., Sch{\"o}pf, K., Schw{\"o}rer, D., Scott, S.D., Sergienko, G., Sertoli, M., Shabbir, A., Sharapov, S.E., Shaw, A., Shaw, R., Sheikh, H., Shepherd, A., Shevelev, A., Shumack, A., Sias, G., Sibbald, M., Sieglin, B., Silburn, S., Silva, A., Silva, C., Simmons, P.A., Simpson, J., Simpson-Hutchinson, J., Sinha, A., Sipil{\"a}, S.K., Sips, A.C.C., Sir{\'e}n, P., Sirinelli, A., Sj{\"o}strand, H., Skiba, M., Skilton, R., Slabkowska, K., Slade, B., Smith, N., Smith, P.G., Smith, R., Smith, T.J., Smithies, M., Snoj, L., Soare, S., Solano, E.R., Somers, A., Sommariva, C., Sonato, P., Sopplesa, A., Sousa, J., Sozzi, C., Spagnolo, S., Spelzini, T., Spineanu, F., Stables, G., Stamatelatos, I., Stamp, M.F., Staniec, P., Stank?nas, G., Stan-Sion, C., Stead, M.J., Stefanikova, E., Stepanov, I., Stephen, A.V., Stephen, M., Stevens, A., Stevens, B.D., Strachan, J., Strand, P., Strauss, H.R., Str{\"o}m, P., Stubbs, G., Studholme, W., Subba, F., Summers, H.P., Svensson, J., widerski, ?, Szabolics, T., Szawlowski, M., Szepesi, G., Suzuki, T.T., T{\'a}l, B., Tala, T., Talbot, A.R., Talebzadeh, S., Taliercio, C., Tamain, P., Tame, C., Tang, W., Tardocchi, M., Taroni, L., Taylor, D., Taylor, K.A., Tegnered, D., Telesca, G., Teplova, N., Terranova, D., Testa, D., Tholerus, E., Thomas, J., Thomas, J.D., Thomas, P., Thompson, A., Thompson, C.-A., Thompson, V.K., Thorne, L., Thornton, A., Thrys?e, A.S., Tigwell, P.A., Tipton, N., Tiseanu, I., Tojo, H., Tokitani, M., Tolias, P., Tome?, M., Tonner, P., nd To, drow, M., Trimble, P., Tripsky, M., Tsalas, M., Tsavalas, P., Tskhakaya Jun, D., Turner, I., Turner, M.M., Turnyanskiy, M., Tvalashvili, G., Tyrrell, S.G.J., Uccello, A., Ul-Abidin, Z., Uljanovs, J., Ulyatt, D., Urano, H., Uytdenhouwen, I., Vadgama, A.P., Valcarcel, D., Valentinuzzi, M., Valisa, M., allejos Olivares, P., Valovic, M., Van De Mortel, M., Van Eester, D., Van Renterghem, W., Van Rooij, G.J., Varje, J., Varoutis, S., Vartanian, S., Vasava, K., Vasilopoulou, T., Vega, J., Verdoolaege, G., Verhoeven, R., Verona, C., Verona Rinati, G., Veshchev, E., Vianello, N., Vicente, J., Viezzer, E., Villari, S., Villone, F., Vincenzi, P., Vinyar, I., Viola, B., Vitins, A., Vizvary, Z., Vlad, M., Voitsekhovitch, I., V, a}?ek, P., Vora, N., Vu, T., Pires De Sa, W., W, Wakeling, B., Waldon, C.W.F., Walkden, N., Walker, M., Walker, R., Walsh, M., Wang, E., Wang, N., Warder, S., Warren, R.J., Waterhouse, J., Watkins, N.W., Watts, C., Wauters, T., Weckmann, A., Weiland, J., Weisen, H., Weiszflog, M., Wellstood, C., West, A.T., Wheatley, M.R., Whetham, S., Whitehead, A.M., Whitehead, B.D., Widdowson, A.M., Wiesen, S., Wilkinson, J., Williams, J., Williams, M., Wilson, A.R., Wilson, D.J., Wilson, H.R., Wilson, J., Wischmeier, M., Withenshaw, G., Withycombe, A., Witts, D.M., Wood, D., Wood, R., Woodley, C., Wray, S., Wright, J., Wright, J.C., Wu, J., Wukitch, S., Wynn, A., Xu, T., Yadikin, D., Yanling, W., Yao, L., Yavorskij, V., Yoo, M.G., Young, C., Young, D., Young, I.D., Young, R., Zacks, J., Zagorski, R., Zaitsev, F.S., Zanino, R., Zarins, A., Zastrow, K.D., Zerbini, M., Zhang, W., Zhou, Y., Zilli, E., Zoita, V., Zoletnik, S., Zychor, I.

    Nuclear Fusion   57 ( 10 )   2017

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    DOI: 10.1088/1741-4326/aa5e28

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  • Effect of impurity deposition layer formation on D retention in LHD plasma exposed W Reviewed

    Y. Oya, H. Fujita, C. Hu, Y. Uemura, S. Sakurada, K. Yuyama, X. Li, Y. Hatano, N. Yoshida, H. Watanabe, Y. Nobuta, Y. Yamauchi, M. Tokitani, S. Masuzaki, T. Chikada

    Nuclear Materials and Energy   9   84 - 88   2016.12

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    DOI: 10.1016/j.nme.2016.07.005

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  • Dependence of CuO particle size and diameter of reaction tubing on tritium recovery for tritium safety operation Reviewed

    Cui Hu, Yuki Uemura, Kenta Yuyama, Hiroe Fujita, Shodai Sakurada, Keisuke Azuma, Akira Taguchi, Masanori Hara, Yuji Hatano, Takumi Chikada, Yasuhisa Oya

    Fusion Engineering and Design   113   313 - 317   2016.12

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    DOI: 10.1016/j.fusengdes.2016.05.023

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  • Review of recent japanese activities on tritium accountability in fusion reactors Reviewed

    Satoshi Fukada, Yasuhisa Oya, Yuji Hatano

    Fusion Engineering and Design   113   231 - 235   2016.12

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    DOI: 10.1016/j.fusengdes.2016.08.029

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  • Influence of hydrogen addition to a sweep gas on tritium behavior in a blanket module containing Li<inf>2</inf>TiO<inf>3</inf> pebbles Reviewed

    K. Katayama, Y. Someya, K. Tobita, S. Fukada, Y. Hatano, T. Chikada

    Fusion Engineering and Design   113   221 - 226   2016.12

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    DOI: 10.1016/j.fusengdes.2016.08.031

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  • Influence of displacement damages on deuterium retention in reduced activation ferritic/martensitic steels F82H and Eurofer97 Reviewed

    Vladimir Kh Alimov, Yuji Hatano, Kazuyoshi Sugiyama, Sosuke Kondo, Tatsuya Hinoki, Masayuki Tokitani

    Fusion Engineering and Design   113   336 - 339   2016.12

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    DOI: 10.1016/j.fusengdes.2016.02.060

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  • Recent progress of hydrogen isotope behavior studies for neutron or heavy ion damaged W Reviewed

    Yasuhisa Oya, Yuji Hatano, Masashi Shimada, Dean Buchenauer, Robert Kolasinski, Brad Merrill, Sosuke Kondo, Tatsuya Hinoki, Vladimir Kh Alimov

    Fusion Engineering and Design   113   211 - 215   2016.12

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    DOI: 10.1016/j.fusengdes.2016.08.004

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  • Tritium burning in inertial electrostatic confinement fusion facility Reviewed

    Masami Ohnishi, Yasushi Yamamoto, Hodaka Osawa, Yuji Hatano, Yuji Torikai, Isao Murata, Keita Kamakura, Masaaki Onishi, Keiji Miyamoto, Hiroki Konda, Kai Masuda, Eiki Hotta

    Fusion Engineering and Design   109-111   1709 - 1713   2016.11

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    DOI: 10.1016/j.fusengdes.2015.10.025

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  • Surface modification and sputtering erosion of reduced activation ferritic martensitic steel F82H exposed to low-energy, high flux deuterium plasma Reviewed

    V. Kh Alimov, Y. Hatano, N. Yoshida, H. Watanabe, M. Oyaidzu, M. Tokitani, T. Hayashi

    Nuclear Materials and Energy   7   25 - 32   2016.5

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    DOI: 10.1016/j.nme.2016.01.001

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  • Impact of temperature during He+ implantation on deuterium retention in tungsten, tungsten with carbon deposit and tungsten carbide Reviewed

    Yasuhisa Oya, Misaki Sato, Xiaochun Li, Kenta Yuyama, Hiroe Fujita, Shodai Sakurada, Yuki Uemura, Yuji Hatano, Naoaki Yoshida, Naoko Ashikawa, Akio Sagara, Takumi Chikada

    Physica Scripta   2016 ( T167 )   2016.1

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    DOI: 10.1088/0031-8949/T167/1/014037

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  • Tritium retention in individual metallic dust particles examined by a tritium imaging plate technique Reviewed

    T. Otsuka, Y. Hatano

    Physica Scripta   2016 ( T167 )   2016.1

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    DOI: 10.1088/0031-8949/T167/1/014010

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  • Tritium distributions on tungsten and carbon tiles used in the JET divertor Reviewed

    Y. Hatano, K. Yumizuru, J. Likonen, S. Koivuranta, J. Ikonen

    Physica Scripta   2016 ( T167 )   2016.1

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    DOI: 10.1088/0031-8949/T167/1/014009

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  • Effect of neutron energy and fluence on deuterium retention behaviour in neutron irradiated tungsten Reviewed

    Hiroe Fujita, Kenta Yuyama, Xiaochun Li, Yuji Hatano, Takeshi Toyama, Masayuki Ohta, Kentaro Ochiai, Naoaki Yoshida, Takumi Chikada, Yasuhisa Oya

    Physica Scripta   2016 ( T167 )   2016.1

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    DOI: 10.1088/0031-8949/T167/1/014068

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  • Tritium desorption and tritium removal from tungsten pre-irradiated with helium Reviewed

    Yuji Nobuta, Yuji Hatano, Yuji Torikai, Masao Matsuyama, Shinsuke Abe, Yuji Yamauchi

    Fusion Engineering and Design   109-111   1179 - 1182   2016

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    DOI: 10.1016/j.fusengdes.2015.12.059

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  • Dynamics for HT and HTO recovery through water bubbler and CuO catalyst Reviewed

    Yasuhisa Oya, Misaki Sato, Kenta Yuyama, Masanori Hara, Yuji Hatano, Masao Matsuyama, Takumi Chikada

    Fusion Science and Technology   68 ( 2 )   358 - 361   2015.9

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    DOI: 10.13182/FST14-931

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  • 2D tritium distribution on tungsten tiles used in JET ITER-like wall project Reviewed

    Y. Hatano, A. Widdowson, N. Bekris, C. Ayres, A. Baron-Wiechec, J. Likonen, S. Koivuranta, J. Ikonen, K. Yumizuru

    Journal of Nuclear Materials   463   966 - 969   2015.7

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    DOI: 10.1016/j.jnucmat.2014.12.041

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  • Defect annealing and thermal desorption of deuterium in low dose HFIR neutron-irradiated tungsten Reviewed

    Masashi Shimada, Masanori Hara, Teppei Otsuka, Yasuhisa Oya, Yuji Hatano

    Journal of Nuclear Materials   463   1005 - 1008   2015.7

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    DOI: 10.1016/j.jnucmat.2014.10.054

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  • Development of positron annihilation spectroscopy for investigating deuterium decorated voids in neutron-irradiated tungsten Reviewed

    C. N. Taylor, M. Shimada, B. J. Merrill, D. W. Akers, Y. Hatano

    Journal of Nuclear Materials   463   1009 - 1012   2015.7

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    DOI: 10.1016/j.jnucmat.2014.11.033

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  • Helium irradiation effects on tritium retention and long-term tritium release properties in polycrystalline tungsten Reviewed

    Y. Nobuta, Y. Hatano, M. Matsuyama, S. Abe, Y. Yamauchi, T. Hino

    Journal of Nuclear Materials   463   993 - 996   2015.7

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    DOI: 10.1016/j.jnucmat.2014.12.047

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  • Influence of helium on hydrogen isotope exchange in tungsten at sequential exposures to deuterium and helium-protium plasmas Reviewed

    N. P. Bobyr, V. Kh Alimov, B. I. Khripunov, A. V. Spitsyn, M. Mayer, Y. Hatano, A. V. Golubeva, V. B. Petrov

    Journal of Nuclear Materials   463   1122 - 1124   2015.7

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    DOI: 10.1016/j.jnucmat.2014.12.022

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  • Thermal desorption behavior of deuterium for 6 MeV Fe ion irradiated W with various damage concentrations Reviewed

    Yasuhisa Oya, Xiaochun Li, Misaki Sato, Kenta Yuyama, Long Zhang, Sosuke Kondo, Tatsuya Hinoki, Yuji Hatano, Hideo Watanabe, Naoaki Yoshida, Takumi Chikada

    Journal of Nuclear Materials   461   336 - 340   2015.7

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    DOI: 10.1016/j.jnucmat.2015.03.032

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  • Preheating temperature effect on tritium retention in VPS-W Reviewed

    Misaki Sato, Hiromichi Uchimura, Kensuke Toda, Tomonori Tokunaga, Hideo Watanabe, Naoaki Yoshida, Yuji Hatano, Ryuta Kasada, Takuya Nagasaka, Akihiko Kimura, Yasuhisa Oya, Kenji Okuno

    Fusion Science and Technology   67 ( 3 )   551 - 554   2015.4

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    DOI: 10.13182/FST14-T77

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  • Formation of α-alumina scales in the Fe-Al(Cr) diffusion coating on China low activation martensitic steel Reviewed

    Qin Zhan, Weiwei Zhao, Hongguang Yang, Yuji Hatano, Xiaoming Yuan, Teo Nozaki, Xinxin Zhu

    Journal of Nuclear Materials   464   135 - 139   2015.4

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    DOI: 10.1016/j.jnucmat.2015.04.038

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  • In-situ observation of sputtered particles for carbon implanted tungsten during energetic hydrogen isotope ion implantation Reviewed

    Yasuhisa Oya, Misaki Sato, Hiromichi Uchimura, Naoko Ashikawa, Akio Sagara, Naoaki Yoshida, Yuji Hatano, Kenji Okuno

    Fusion Science and Technology   67 ( 3 )   515 - 518   2015.4

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    DOI: 10.13182/FST14-T68

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  • Tritium retention in reduced-activation ferritic/martensitic steels Reviewed

    Y. Hatano, V. Kh Alimov, A. V. Spitsyn, N. P. Bobyr, D. I. Cherkez, S. Abe, O. V. Ogorodnikova, N. S. Klimov, B. I. Khripunov, A. V. Golubeva, V. M. Chernov, M. Oyaidzu, T. Yamanishi, M. Matsuyama

    Fusion Science and Technology   67 ( 2 )   361 - 364   2015.3

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    DOI: 10.13182/FST14-T30

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  • Effect of hydrogen on fatigue crack propagation behavior of wrought magnesium alloy AZ61 in NaCl solution under controlled cathodic potentials Reviewed

    Toshifumi Kakiuchi, Yoshihiko Uematsu, Yuji Hatano, Masaki Nakajima, Yuki Nakamura, Tomonori Taniguchi

    Engineering Fracture Mechanics   137   88 - 96   2015.3

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    DOI: 10.1016/j.engfracmech.2015.03.032

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  • Thermodynamics of hydrogen-induced superabundant vacancy in tungsten Reviewed

    Kazuhito Ohsawa, Fumihiro Nakamori, Yuji Hatano, Masatake Yamaguchi

    Journal of Nuclear Materials   458   187 - 197   2015.3

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    DOI: 10.1016/j.jnucmat.2014.12.029

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  • Irradiation effect on deuterium behaviour in low-dose HFIR neutron-irradiated tungsten Reviewed

    Masashi Shimada, G. Cao, T. Otsuka, M. Hara, M. Kobayashi, Y. Oya, Y. Hatano

    Nuclear Fusion   55 ( 1 )   2015.1

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    DOI: 10.1088/0029-5515/55/1/013008

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  • Comparison of hydrogen isotope retention for tungsten probes in LHD vacuum vessel during the experimental campaigns in 2011 and 2012 Reviewed

    Y. Oya, S. Masuzaki, M. Tokitani, M. Sato, K. Toda, H. Uchimura, N. Yoshida, H. Watanabe, Y. Yamauchi, T. Hino, M. Miyamoto, Y. Hatano, K. Okuno

    Fusion Engineering and Design   89 ( 7-8 )   1091 - 1095   2014.10

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    DOI: 10.1016/j.fusengdes.2013.12.018

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  • Tritium retention properties of tungsten, graphite and co-deposited carbon film Reviewed

    Y. Nobuta, Y. Hatano, M. Matsuyama, S. Abe, S. Akamaru, Y. Yamauchi, T. Hino, S. Suzuki, M. Akiba

    Fusion Engineering and Design   89 ( 7-8 )   1516 - 1519   2014.10

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    DOI: 10.1016/j.fusengdes.2014.04.004

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  • Surface morphology and deuterium retention in tungsten and tungsten-rhenium alloy exposed to low-energy, high flux D plasma Reviewed

    V. Kh Alimov, Y. Hatano, K. Sugiyama, M. Balden, M. Oyaidzu, S. Akamaru, K. Tada, H. Kurishita, T. Hayashi, M. Matsuyama

    Journal of Nuclear Materials   454 ( 1-3 )   136 - 141   2014.8

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  • Development of positron annihilation spectroscopy for characterizing neutron irradiated tungsten Reviewed

    C. N. Taylor, M. Shimada, B. J. Merrill, M. W. Drigert, D. W. Akers, Y. Hatano

    Physica Scripta   T159   2014

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    DOI: 10.1088/0031-8949/2014/T159/014055

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  • Current activities in the interactive joint research at tohoku university - advanced evaluation of radiation effects on fusion materials Reviewed

    Hiroaki Kurishita, Masahiko Hatakeyama, Minoru Narui, Satoru Matsuo, Tatsuo Shikama, Kohei Tada, Noriyasu Ohno, Takao Takeuchi, Yuji Hatano, Masaki Nishiura, Yousuke Nakashima, Hideo Watanabe, Kazutoshi Tokunaga, Tomoaki Hino, Yoshio Ueda, Takeo Muroga, Akio Sagara, Osamu Kaneko

    Plasma and Fusion Research   9 ( SpecialIssue2 )   2014

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    DOI: 10.1585/pfr.9.3405136

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  • Current status of nanostructured tungsten-based materials development Reviewed

    H. Kurishita, S. Matsuo, H. Arakawa, T. Sakamoto, S. Kobayashi, K. Nakai, H. Okano, H. Watanabe, N. Yoshida, Y. Torikai, Y. Hatano, T. Takida, M. Kato, A. Ikegaya, Y. Ueda, M. Hatakeyama, T. Shikama

    Physica Scripta   T159   2014

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    DOI: 10.1088/0031-8949/2014/T159/014032

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  • Deuterium trapping by irradiation damage in tungsten induced by different displacement processes Reviewed

    Makoto Kobayashi, Masashi Shimada, Yuji Hatano, Takuji Oda, Brad Merrill, Yasuhisa Oya, Kenji Okuno

    Fusion Engineering and Design   88 ( 9-10 )   1749 - 1752   2013.10

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    DOI: 10.1016/j.fusengdes.2013.04.009

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  • Enhancement of hydrogen isotope retention capacity for the impurity deposited tungsten by long-term plasma exposure in LHD Reviewed

    Yasuhisa Oya, Suguru Masuzaki, Masayuki Tokitani, Naoaki Yoshida, Hideo Watanabe, Yuji Yamauchi, Tomoaki Hino, Mitsutaka Miyamoto, Yuji Hatano, Kenji Okuno

    Fusion Engineering and Design   88 ( 9-10 )   1699 - 1703   2013.10

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    DOI: 10.1016/j.fusengdes.2013.03.002

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  • Influence of tungsten-carbon mixed layer and irradiation defects on deuterium retention behavior in tungsten Reviewed

    Ryo Miura, Tetsuo Fujishima, Hiromichi Uchimura, Kensuke Toda, Makoto Kobayashi, Naoko Ashikawa, Akio Sagara, Naoaki Yoshida, Yuji Hatano, Yasuhisa Oya, Kenji Okuno

    Fusion Engineering and Design   88 ( 9-10 )   1827 - 1830   2013.10

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    DOI: 10.1016/j.fusengdes.2013.04.051

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  • Hydrogen permeation through a Pd/Ta composite membrane with a HfN intermediate layer Reviewed

    T. Nozaki, Y. Hatano

    International Journal of Hydrogen Energy   38 ( 27 )   11983 - 11987   2013.9

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    DOI: 10.1016/j.ijhydene.2013.07.012

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  • Tritium interaction with surface layer and bulk of type 316 stainless steel and consequences of aging Reviewed

    R. D. Penzhorn, Y. Hatano, M. Matsuyama, Y. Torikai

    Fusion Science and Technology   64 ( 1 )   45 - 53   2013.7

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    DOI: 10.13182/FST12-625

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  • Tritium trapping in silicon carbide in contact with solid breeder under high flux isotope reactor irradiation Reviewed

    H. Katsui, Y. Katoh, A. Hasegawa, M. Shimada, Y. Hatano, T. Hinoki, S. Nogami, T. Tanaka, S. Nagata, T. Shikama

    Journal of Nuclear Materials   442 ( 1-3 SUPPL.1 )   2013

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    DOI: 10.1016/j.jnucmat.2012.12.021

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  • In situ observation of deuterium trapping in self-ion irradiated tungsten Reviewed

    Ikuji Takagi, Kazuyoshi Yamamichi, Yoshinori Furuta, Masafumi Akiyoshi, Takayuki Sasaki, Hidetsugu Tsuchida, Yuji Hatano

    Journal of Nuclear Materials   442 ( 1-3 SUPPL.1 )   S246   2013

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  • The effect of displacement damage on deuterium retention in tungsten exposed to D neutrals and D<inf>2</inf> gas Reviewed

    V. Kh Alimov, Y. Hatano, K. Sugiyama, J. Roth, B. Tyburska-Püschel, J. Dorner, J. Shi, M. Matsuyama, K. Isobe, T. Yamanishi

    Journal of Nuclear Materials   438 ( SUPPL )   2013

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  • Deuterium Retention Properties of Co-Deposited Carbon Films Produced at Wall Gaps

    NOBUTA Yuji, KANAZAWA Jun, YAMAUCHI Yuji, HINO Tomoaki, YOKOYAMA Kenji, SUZUKI Satoshi, EZATO Koichiro, ENOEDA Mikio, AKIBA Masato, AKAMARU Satoshi, HATANO Yuji

    Plasma and Fusion Research   8   2405174 - 2405174   2013

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    Deuterium retention properties in co-deposited carbon film produced in gap and the relationship between this retention behavior and the crystal structure of carbon film were investigated. In the case of a wide gap, the atomic ratio of deuterium to carbon (D/C) in the film was almost constant at any depth in the gap, while in the case of a narrow gap the D/C ratio decreased with increasing distance from the gap entrance. The micro structure of carbon film tended to be more amorphous for the film produced at locations deeper in the gap. Thermal desorption spectra of D2 in the film produced near the gap entrance showed one broad main peak at around 1100 K, while that in the film produced near the bottom showed very sharp peaks at around 950 K. This difference in desorption behavior was related with the differences of micro structure.

    DOI: 10.1585/pfr.8.2405174

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  • Behaviors of deuterium retention and microstructure change of tungsten simultaneously implanted with carbon and/or helium ions

    Yasuhisa Oya, Makoto Kobayashi, Tetsuo Fujishima, Kiyotaka Kawasaki, Yuto Miyahara, Naoaki Yoshida, Yuji Hatano, Naoko Ashikawa, Akio Sagara, Kenji Okuno

    Materials Transactions   54 ( 4 )   430 - 436   2013

  • Dynamic deuterium recycling on tungsten under carbon-deuterium implantation circumstance Reviewed

    Tomohisa Taguchi, Makoto Kobayashi, Kiyotaka Kawasaki, Yuto Miyahara, Naoko Ashikawa, Akio Sagara, Naoaki Yoshida, Mitsutaka Miyamoto, Kotaro Ono, Yuji Hatano, Yasuhisa Oya, Kenji Okuno

    Journal of Nuclear Materials   438 ( SUPPL )   S1117 - S1120   2013

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    DOI: 10.1016/j.jnucmat.2013.01.246

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  • Tritium retention in nanostructured tungsten with large effective surface area Reviewed

    Miyuki Yajima, Yuji Hatano, Shin Kajita, Jie Shi, Masanori Hara, Noriyasu Ohno

    Journal of Nuclear Materials   438 ( SUPPL )   S1142 - S1145   2013

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    DOI: 10.1016/j.jnucmat.2013.01.252

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  • Behavior of deuterium retention and surface morphology for VPS-W/F82H Reviewed

    Yasuhisa Oya, Masashi Shimada, Tomonori Tokunaga, Hideo Watanabe, Naoaki Yoshida, Yuji Hatano, Ryuta Kasada, Takuya Nagasaka, Akihiko Kimura, Kenji Okuno

    Journal of Nuclear Materials   442 ( 1-3 SUPPL.1 )   S242 - S245   2013

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    DOI: 10.1016/j.jnucmat.2013.01.321

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  • Enhancement of hydrogen isotope retention in tungsten exposed to LHD plasmas Reviewed

    Yasuhisa Oya, Suguru Masuzaki, Tetsuo Fujishima, Masayuki Tokitani, Naoaki Yoshida, Hideo Watanabe, Yuji Yamauchi, Tomoaki Hino, Mitsutaka Miyamoto, Yuji Hatano, Kenji Okuno

    Journal of Nuclear Materials   438 ( SUPPL )   S1055 - S1058   2013

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    DOI: 10.1016/j.jnucmat.2013.01.231

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  • Retention and desorption behavior of tritium in Si related ceramics Reviewed

    Yasuhisa Oya, Yuji Hatano, Masanori Hara, Masao Matsuyama, Kenji Okuno

    Journal of Nuclear Materials   438 ( 1-3 )   22 - 25   2013

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    DOI: 10.1016/j.jnucmat.2013.03.001

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  • OS1512 Fatigue crack propagation behaviour of AZ61 magnesium alloy under controlled cathodic potential

    TANIGUCHI Tomonori, UEMATSU Yoshihiko, HATANO Yuji, KAKIUCHI Toshifumi, NAKAJIMA Masaki, NAKAMURA Yuki

    The Proceedings of the Materials and Mechanics Conference   2013 ( 0 )   _OS1512 - 1_-_OS1512-3_   2013

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    DOI: 10.1299/jsmemm.2013._OS1512-1_

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  • Tritium Autoradiography Study on Hydrogen Invading Aluminum from Different Environments

    Watakabe Takahito, Itoh Goroh, Hatano Yuji

    Journal of the Japan Institute of Metals and Materials   77 ( 12 )   565 - 570   2013

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    DOI: 10.2320/jinstmet.JC201317

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  • Analysis of a tritium enhanced water spectrum between 7200 and 7245 cm -1 using new variational calculations Reviewed

    Michael J. Down, Jonathan Tennyson, Masanori Hara, Yuji Hatano, Kaori Kobayashi

    Journal of Molecular Spectroscopy   289   35 - 40   2013

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    DOI: 10.1016/j.jms.2013.05.016

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  • Study on kinetics of hydrogen dissolution and hydrogen solubility in oxides using imaging plate technique Reviewed

    K. Hashizume, K. Ogata, M. Nishikawa, T. Tanabe, S. Abe, S. Akamaru, Y. Hatano

    Journal of Nuclear Materials   442 ( 1-3 SUPPL.1 )   2013

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    DOI: 10.1016/j.jnucmat.2013.05.038

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  • Self-hardening effect of CrAlN/BN nanocomposite films deposited by direct current and radio frequency reactive cosputtering Reviewed

    Masateru Nose, Wen An Chiou, Tokimasa Kawabata, Yuji Hatano, Kenji Matsuda

    Thin Solid Films   523   6 - 10   2012.11

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    DOI: 10.1016/j.tsf.2012.05.063

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  • Overview of the US-Japan collaborative investigation on hydrogen isotope retention in neutron-irradiated and ion-damaged tungsten Reviewed

    Masashi Shimada, Y. Hatano, Y. Oya, T. Oda, M. Hara, G. Cao, M. Kobayashi, M. Sokolov, H. Watanabe, B. Tyburska-Püschel, Y. Ueda, P. Calderoni, K. Okuno

    Fusion Engineering and Design   87 ( 7-8 )   1166 - 1170   2012.8

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    DOI: 10.1016/j.fusengdes.2012.02.103

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  • Effect of surface oxide layer on deuterium permeation behaviors through a type 316 stainless steel Reviewed

    Yasuhisa Oya, Makoto Kobayashi, Junya Osuo, Masato Suzuki, Akiko Hamada, Katsushi Matsuoka, Yuji Hatano, Masao Matsuyama, Takumi Hayashi, Toshihiko Yamanishi, Kenji Okuno

    Fusion Engineering and Design   87 ( 5-6 )   580 - 583   2012.8

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    DOI: 10.1016/j.fusengdes.2012.01.025

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  • Measurement of tritium concentration in water by imaging plate Reviewed

    Yuji Hatano, Masanori Hara, Hiroko Ohuchi-Yoshida, Hirofumi Nakamura, Toshihiko Yamanishi

    Fusion Engineering and Design   87 ( 7-8 )   965 - 968   2012.8

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    DOI: 10.1016/j.fusengdes.2012.02.057

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  • Tritium absorption of co-deposited carbon films Reviewed

    Yuji Nobuta, Yuji Yamauchi, Tomoaki Hino, Satoshi Akamaru, Yuji Hatano, Masao Matsuyama, Satoshi Suzuki, Masato Akiba

    Fusion Engineering and Design   87 ( 7-8 )   1070 - 1073   2012.8

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    DOI: 10.1016/j.fusengdes.2012.02.080

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  • Tritium depth profile in matter using an imaging plate Reviewed

    Hiroko Ohuchi-Yoshida, Yuji Hatano, Yasushi Kino, Yasuhiro Kondo

    Fusion Engineering and Design   87 ( 5-6 )   423 - 426   2012.8

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    DOI: 10.1016/j.fusengdes.2011.11.012

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  • Deuterium behavior at the interface of oxidized metal under high temperature heavy water Reviewed

    Hirofumi Nakamura, Yuji Hatano, Toshihiko Yamanishi

    Fusion Engineering and Design   87 ( 5-6 )   916 - 920   2012.8

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    DOI: 10.1016/j.fusengdes.2012.02.044

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  • Measurement of deuterium and helium by glow-discharge optical emission spectroscopy for plasma-surface interaction studies Reviewed

    Yuji Hatano, Jie Shi, Naoaki Yoshida, Naoki Futagami, Yasuhisa Oya, Hirofumi Nakamura

    Fusion Engineering and Design   87 ( 7-8 )   1091 - 1094   2012.8

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    DOI: 10.1016/j.fusengdes.2012.02.078

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  • Study on the retention behavior of hydrogen isotopes and the change of chemical states of boron film exposed to hydrogen plasma in LHD Reviewed

    Akiko Hamada, Makoto Kobayashi, Katsushi Matsuoka, Masato Suzuki, Junya Osuo, Naoko Ashikawa, Akio Sagara, Yuji Hatano, Yasuhisa Oya, Kenji Okuno

    Fusion Engineering and Design   87 ( 7-8 )   1214 - 1217   2012.8

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    DOI: 10.1016/j.fusengdes.2012.02.112

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  • Effect of hydrophobic paints coating for tritium reduction in concrete materials Reviewed

    Y. Edao, S. Fukada, Y. Nishimura, K. Katayama, T. Takeishi, Y. Hatano, A. Taguchi

    Fusion Engineering and Design   87 ( 7-8 )   995 - 998   2012.8

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    DOI: 10.1016/j.fusengdes.2012.02.058

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  • Permeation measurements for investigating atomic hydrogen flux and wall pumping/fuelling dynamics in QUEST Reviewed

    S. K. Sharma, H. Zushi, I. Takagi, Y. Hisano, T. Shikama, S. Morita, T. Tanabe, N. Yoshida, M. Sakamoto, Y. Higashizono, K. Hanada, M. Hasegawa, K. Nakamura, H. Idei, K. N. Sato, S. Kawasaki, H. Nakashima, A. Higashijima, Y. Nakashima, Y. Hatano, A. Sagara, Y. Nakamura, N. Ashikawa, T. Maekawa, Y. Kishimoto, Y. Takase

    Journal of Nuclear Materials   420 ( 1-3 )   83 - 93   2012.1

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    DOI: 10.1016/j.jnucmat.2011.09.026

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  • The effect of displacement damage on deuterium retention in ITER-grade tungsten exposed to low-energy, high-flux pure and helium-seeded deuterium plasmas Reviewed

    V. Kh Alimov, B. Tyburska-Püschel, Y. Hatano, J. Roth, K. Isobe, M. Matsuyama, T. Yamanishi

    Journal of Nuclear Materials   420 ( 1-3 )   370 - 373   2012.1

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    DOI: 10.1016/j.jnucmat.2011.10.025

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  • Temperature dependence of surface morphology and deuterium retention in polycrystalline ITER-grade tungsten exposed to low-energy, high-flux D plasma Reviewed

    V. Kh Alimov, B. Tyburska-Püschel, S. Lindig, Y. Hatano, M. Balden, J. Roth, K. Isobe, M. Matsuyama, T. Yamanishi

    Journal of Nuclear Materials   420 ( 1-3 )   519 - 524   2012.1

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    DOI: 10.1016/j.jnucmat.2011.11.003

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  • Transfer of tritium in concrete coated with hydrophobic paints Reviewed

    S. Fukada, Y. Edao, K. Sato, T. Takeishi, K. Katayama, K. Kobayashi, T. Hayashi, T. Yamanishi, Y. Hatano, A. Taguchi, S. Akamaru

    Fusion Engineering and Design   87 ( 1 )   54 - 60   2012.1

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    DOI: 10.1016/j.fusengdes.2011.09.001

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  • Behavior of hydrogen invasion in aluminum alloys from different environments Reviewed

    Takahito Watakabe, Goroh Itoh, Yuji Hatano

    Advanced Materials Research   409   92 - 95   2012

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    DOI: 10.4028/www.scientific.net/AMR.409.92

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  • Oxidation resistance and self hardening of CrAlN/BN nanocomposite coatings Reviewed

    Masateru Nose, Tomohiro Watanuki, Tokimasa Kawabata, Yuji Hatano, Kenji Matsuda, Ssusumu Ikeno

    Materials Science Forum   706-709   2559 - 2564   2012

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    DOI: 10.4028/www.scientific.net/MSF.706-709.2559

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  • Fabrication of ZrO2 coatings on ferritic steel by wet-chemical methods as a tritium permeation barrier Reviewed

    Y. Hatano, K. Zhang, K. Hashizume

    PHYSICA SCRIPTA   T145   2011.12

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    DOI: 10.1088/0031-8949/2011/T145/014044

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  • Recent progress of tungsten R&D for fusion application in Japan Reviewed

    Y. Ueda, H. T. Lee, N. Ohno, S. Kajita, A. Kimura, R. Kasada, T. Nagasaka, Y. Hatano, A. Hasegawa, H. Kurishita, Y. Oya

    PHYSICA SCRIPTA   T145   14029   2011.12

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    DOI: 10.1088/0031-8949/2011/T145/014029

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  • Hydrogen permeation measurements in the spherical tokamak quest and its numerical modeling Reviewed

    S. K. Sharma, H. Zushi, I. Takagi, Y. Hisano, T. Shikama, S. Morita, T. Tanabe, N. Yoshida, M. Sakamoto, Y. Higashizono, K. Hanada, M. Hasegawa, O. Mitarai, K. Nakamura, H. Idei, K. N. Sato, S. Kawasaki, H. Nakashima, A. Higashijima, Y. Nakashima, N. Nishino, Y. Hatano, A. Sagara, Y. Nakamura, N. Ashikawa, T. Maekawa, Y. Kishimoto, Y. Takase

    Fusion Science and Technology   60 ( 4 )   1511 - 1514   2011.11

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    DOI: 10.13182/FST11-A12719

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  • Influence of Chromium oxide layer on surface tritium contamination of type 316 stainless steel Reviewed

    Yohei Ozeki, Yuji Hatano, Haruka Taniguchi, Masao Matsuyama

    Fusion Science and Technology   60 ( 4 )   1499 - 1502   2011.11

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    DOI: 10.13182/FST11-A12716

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  • Tritium absorption of co-deposited carbon films, graphite and polycrystalline tungsten Reviewed

    Y. Nobuta, Y. Yamauchi, T. Hino, S. Akamaru, Y. Hatano, M. Matsuyama, S. Suzuki, M. Akiba

    Fusion Science and Technology   60 ( 4 )   1535 - 1538   2011.11

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    DOI: 10.13182/fst11-a12725

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  • Development of monte carlo simulation code to model behavior of hydrogen isotopes loaded into tungsten containig vacancies Reviewed

    T. Oda, M. Shimada, K. Zhang, P. Calderoni, Y. Oya, M. Sokolov, R. Kolasinski, J. P. Sharpe, Y. Hatano

    Fusion Science and Technology   60 ( 4 )   1455 - 1458   2011.11

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    DOI: 10.13182/fst11-a12705

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  • Trapping and depth profile of tritium in surface layers of metallic materials Reviewed

    M. Matsuyama, Z. Chen, K. Nisimura, S. Akamaru, Y. Torikai, Y. Hatano, N. Ashikawa, Y. Oya, K. Okuno, T. Hino

    Journal of Nuclear Materials   417 ( 1-3 )   900 - 903   2011.10

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    DOI: 10.1016/j.jnucmat.2011.04.005

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  • Temperature dependence of retention of energetic deuterium and carbon simultaneously implanted into tungsten Reviewed

    Wanjing Wang, Makoto Kobayashi, Rie Kurata, Sachiko Suzuki, Naoko Ashikawa, Akio Sagara, Naoaki Yoshida, Yuji Hatano, Guang Nan Luo, Yasuhisa Oya, Kenji Okuno

    Journal of Nuclear Materials   417 ( 1-3 )   555 - 558   2011.10

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    DOI: 10.1016/j.jnucmat.2010.12.111

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  • Sealing of pores in sol-gel-derived tritium permeation barrier coating by electrochemical technique Reviewed

    Kun Zhang, Yuji Hatano

    Journal of Nuclear Materials   417 ( 1-3 )   1229 - 1232   2011.10

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    DOI: 10.1016/j.jnucmat.2010.12.276

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  • An overview of research activities on materials for nuclear applications at the INL Safety, Tritium and Applied Research facility Reviewed

    P. Calderoni, J. Sharpe, M. Shimada, B. Denny, B. Pawelko, S. Schuetz, G. Longhurst, Y. Hatano, M. Hara, Y. Oya, T. Otsuka, K. Katayama, S. Konishi, K. Noborio, Y. Yamamoto

    Journal of Nuclear Materials   417 ( 1-3 )   1336 - 1340   2011.10

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  • Tritium transfer in porous concrete materials coated with hydrophobic paints Reviewed

    S. Fukada, Y. Edao, K. Sato, T. Takeishi, K. Katayama, K. Kobayashi, T. Hayashi, T. Yamanishi, Y. Hatano, A. Taguchi, S. Akamaru

    Fusion Science and Technology   60 ( 3 )   1061 - 1064   2011.10

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    DOI: 10.13182/FST11-A12599

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  • Comparison of hydrogen isotope retention and irradiation damage behaviors in tungsten and SS-316 with simultaneous C+-D<inf>2</inf>+ implantation Reviewed

    Yasuhisa Oya, Makoto Kobayashi, Rie Kurata, Naoaki Yoshida, Naoko Ashikawa, Akio Sagara, Masanori Hara, Yuji Hatano, Kenji Okuno

    Fusion Engineering and Design   86 ( 9-11 )   1776 - 1779   2011.10

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    DOI: 10.1016/j.fusengdes.2010.11.017

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  • Measurement of highly tritiated water by imaging plate Reviewed

    Yuji Hatano, Masanori Hara, Hiroko Ohuchi, Hirofumi Nakamura, Takumi Hayashi, Toshihiko Yamanishi

    Fusion Science and Technology   60 ( 3 )   982 - 985   2011.10

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    DOI: 10.13182/FST11-A12580

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  • Near-infrared spectroscopy of tritiated water Reviewed

    Kaori Kobayashi, Tomoya Enokida, Daisuke Lio, Yuta Yamada, Masanori Hara, Yuji Hatano

    Fusion Science and Technology   60 ( 3 )   941 - 943   2011.10

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    DOI: 10.13182/FST11-A12570

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  • First result of deuterium retention in neutron-irradiated tungsten exposed to high flux plasma in TPE Reviewed

    Masashi Shimada, Y. Hatano, P. Calderoni, T. Oda, Y. Oya, M. Sokolov, K. Zhang, G. Cao, R. Kolasinski, J. P. Sharpe

    Journal of Nuclear Materials   415 ( 1 SUPPL )   2011.8

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  • Dynamics of hydrogen isotope trapping and detrapping for tungsten under simultaneous triple ion (C+, D 2 + and He+) implantation Reviewed

    Yasuhisa Oya, Makoto Kobayashi, Rie Kurata, Wanjing Wang, Naoko Ashikawa, Akio Sagara, Naoaki Yoshida, Yuji Hatano, Kenji Okuno

    Journal of Nuclear Materials   415 ( 1 SUPPL )   S701 - S704   2011.8

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    DOI: 10.1016/j.jnucmat.2010.09.058

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  • Hydrogen permeation and recombination in Ni membrane placed on spherical tokamak QUEST Reviewed

    I. Takagi, S. K. Sharma, H. Zushi, R. Imade, T. Komura, Y. Hisano, Y. Hatano, Y. Nakamura, A. Sagara, N. Ashikawa

    Journal of Nuclear Materials   415 ( 1 SUPPL )   S692 - S695   2011.8

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    DOI: 10.1016/j.jnucmat.2010.12.011

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  • Application of tritium imaging plate technique to examine tritium behaviors on the surface and in the bulk of plasma-exposed materials Reviewed

    T. Otsuka, M. Shimada, R. Kolasinski, P. Calderoni, J. P. Sharpe, Y. Ueda, Y. Hatano, T. Tanabe

    Journal of Nuclear Materials   415 ( 1 SUPPL )   2011.8

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    DOI: 10.1016/j.jnucmat.2010.11.046

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  • Pressure-composition isotherms of TiC<inf>1-x</inf>-H system at elevated temperatures Reviewed

    Teo Nozaki, Hirofumi Homma, Yuji Hatano

    Materials Transactions   52 ( 3 )   526 - 530   2011.3

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    DOI: 10.2320/matertrans.M2010307

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  • Midterm summary of Japan-US fusion cooperation program TITAN Reviewed

    T. Muroga, D. K. Sze, K. Okuno, T. Terai, A. Kimura, R. J. Kurtz, A. Sagara, R. Nygren, Y. Ueda, R. P. Doerner, J. P. Sharpe, T. Kunugi, N. B. Morley, Y. Hatano, M. A. Sokolov, T. Yamamoto, A. Hasegawa, Y. Katoh, N. Ohno, K. Tokunaga, S. Konishi, S. Fukada, P. Calderoni, T. Yokomine, K. Messadek, Y. Oya, N. Hashimoto, T. Hinoki, H. Hashizume, T. Norimatsu, T. Shikama, R. E. Stoller, K. A. Tanaka, M. S. Tillack

    Fusion Science and Technology   60 ( 1 )   321 - 328   2011

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    DOI: 10.13182/FST11-A12373

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  • The deuterium depth profile in neutron-irradiated tungsten exposed to plasma Reviewed

    Masashi Shimada, G. Cao, Y. Hatano, T. Oda, Y. Oya, M. Hara, P. Calderoni

    Physica Scripta T   T145   2011

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    DOI: 10.1088/0031-8949/2011/T145/014051

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  • Fabrication of ZrO <inf>2</inf> coatings on ferritic steel by wet-chemical methods as a tritium permeation barrier Reviewed

    Y. Hatano, K. Zhang, K. Hashizume

    Physica Scripta T   T145   2011

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    DOI: 10.1088/0031-8949/2011/T145/014044

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  • Hydrogen isotope exchange in tungsten irradiated sequentially with low-energy deuterium and protium ions Reviewed

    V. Kh Alimov, B. Tyburska-Püschel, M. H.J. 'T Hoen, J. Roth, Y. Hatano, K. Isobe, M. Matsuyama, T. Yamanishi

    Physica Scripta T   T145   2011

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    DOI: 10.1088/0031-8949/2011/T145/014037

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  • Recent progress of tungsten R&amp;D for fusion application in Japan Reviewed

    Y. Ueda, H. T. Lee, N. Ohno, S. Kajita, A. Kimura, R. Kasada, T. Nagasaka, Y. Hatano, A. Hasegawa, H. Kurishita, Y. Oya

    Physica Scripta T   T145   2011

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    DOI: 10.1088/0031-8949/2011/T145/014029

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  • Comparison of deuterium retention for ion-irradiated or neutron-irradiated tungsten

    Oya Yasuhisa, Shimada Masashi, Oda Takuji, Hara Masanori, Hatano Yuji, Pattrick Calderoni, Okuno Kenji

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan   2011 ( 0 )   720 - 720   2011

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    DOI: 10.11561/aesj.2011s.0.720.0

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  • Study on compatibility between silicon carbide and solid breeding materials under neutron irradiation Reviewed

    H. Katsui, A. Hasegawa, Y. Katoh, Y. Hatano, T. Tanaka, S. Nogami, T. Hinoki, T. Shikama

    Fusion Science and Technology   60 ( 1 )   288 - 291   2011

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  • Preparation of Mg and Al phosphate coatings on ferritic steel by wet-chemical method as tritium permeation barrier Reviewed

    Kun Zhang, Yuji Hatano

    Fusion Engineering and Design   85 ( 7-9 )   1090 - 1093   2010.12

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    DOI: 10.1016/j.fusengdes.2010.02.012

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  • Improvement of high temperature stability of Pd coating on Ta by HfN intermediate layer Reviewed

    Teo Nozaki, Yuji Hatano, Eriko Yamakawa, Asuka Hachikawa, Kazuyoshi Ichinose

    International Journal of Hydrogen Energy   35 ( 22 )   12454 - 12460   2010.11

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    DOI: 10.1016/j.ijhydene.2010.08.114

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  • Measurement of hydrogen permeation due to atomic flux using permeation probe in the spherical tokamak QUEST Reviewed

    Sanjeev K. Sharma, Hideki Zushi, Ikuji Takagi, Yuki Hisano, Mizuki Sakamoto, Yuta Higashizono, Taichi Shikama, Sigeru Morita, Tetsuo Tanabe, Naoaki Yoshida, Kazuaki Hanada, Makoto Hasegawa, Osamu Mitarai, Kazuo Nakamura, Hiroshi Idei, Kohnosuke N. Sato, Shoji Kawasaki, Hisatoshi Nakashima, Aki Higashijima, Yousuke Nakashima, Nobuyuki Nishino, Yuji Hatano, Akira Sagara, Yukio Nakamura, Naoko Ashikawa, Takashi Maekawa, Yasuaki Kishimoto, Yuichi Takase

    Fusion Engineering and Design   85 ( 6 )   950 - 955   2010.11

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    DOI: 10.1016/j.fusengdes.2010.08.032

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  • Visualization of diffusive hydrogen Reviewed

    Takahito Watakabe, Goroh Itoh, Yuji Hatano

    Materials Science Forum   654-656   2903 - 2906   2010

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    DOI: 10.4028/www.scientific.net/MSF.654-656.2903

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  • Hydrogen permeation through the Pd-V/Nb-Pd composite membranes: Surface effects and thermal degradation Reviewed

    V. Alimov, Y. Hatano, A. Busnyuk, M. Notkin, A. Livshits

    20th Annual Meeting of the North American Membrane Society and 11th International Conference on Inorganic Membranes 2010, NAMS/ICIM 2010   36 ( 13 )   60 - 61   2010

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    DOI: 10.1016/j.ijhydene.2011.04.016

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  • Correlation between hydrogen distribution in V-4Cr-4Ti alloy and impact strength Reviewed

    Y. Hatano, H. Homma, T. Sakamura, H. Saitoh, T. Nagasaka, T. Muroga, M. Matsuyama

    Journal of Nuclear Materials   386-388 ( C )   569 - 571   2009.4

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    DOI: 10.1016/j.jnucmat.2008.12.178

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  • Preliminary Study of H₂O Adsorption on Cr₂O₃ and Al₂O₃ Surfaces by Ab Initio Cluster Calculations

    Watanabe K., Torikai Y., Hara M., Hatano Y.

    富山大学水素同位体科学研究センター研究報告 = Annual Report of Hydrogen Isotope Research Center, University of Toyama   28   9 - 22   2009.3

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    Adsorption and desorption of water over Cr-oxide and alumina are of great concern with the contamination of stainless steel and gas chromatographic isotope separation. However,the mechanisms of those phenomena have not been fully clarified. A preliminary ab inito study on the behavior of water molecules on the (001) surfaces of α-Cr₂O₃ and α-Al₂O₃ was carried out for small clusters of Me4O4 (Me=Cr or Al) by use of the Gaussian 03 package. It was found that water molecules can be adsorbed molecularly and dissociatively on these surfaces. Molecular adsorption of a H₂O molecule takes place on a metal atom of the cluster as Me-OH₂, with the bond length of about 2.0 Å. Dissociative adsorption occurs by forming Me-OH (on-top site) or Me2-OH (bridge site) and O-H bonds. There appeared a feature that the bond length of Me2-OH is greater than that of Me-OH. Calculated adsorption energies were examined by comparing with the values estimated from the thermal desorption spectra of water for α-Cr₂O₃ and γ-alumina. The ab initio calculations coincided quite well with the observed thermal desorption spectrum for α-Cr₂O₃, whereas they did not for γ-alumina. Further studies are required to clarify the structures of adsorbed species, adsorptiron energies and kinetic processes.

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  • Tritium diffusion in V4Cr-4Ti alloy Reviewed

    K. Hashizume, J. Masuda, K. T. Otsuka, T. Tanabe, Y. Hatano, Y. Nakamura, T. Nagasaka, T. Muroga

    Fusion Science and Technology   54 ( 2 )   553 - 556   2008.8

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    DOI: 10.13182/FST08-A1876

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  • Influence of oxygen on permeation of hydrogen isotopes through group 5 metals Reviewed

    Yuji Hatano, Andrei Busnyuk, Vasily Alimov, Alexander Livshits, Yukio Nakamura, Masao Matsuyama

    Fusion Science and Technology   54 ( 2 )   526 - 529   2008.8

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    DOI: 10.13182/FST08-A1869

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  • Correlation between hydrogen isotope permeation through niobium and bulk oxygen concentration: Possible influence of oxygen on tritium recovery from Pb-Li by vacuum permeator Reviewed

    Yuji Hatano, Andrei Busnyuk, Alexander Livshits, Hirofumi Homma, Masao Matsuyama

    Fusion Science and Technology   52 ( 4 )   990 - 994   2007.11

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    DOI: 10.13182/FST07-A1623

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  • Improvement of high temperature stability of Pd coating on Nb by intermediate layer comprising NbC and Nb<inf>2</inf>C Reviewed

    Yuji Hatano, Keita Ishiyama, Hirofumi Homma, Kuniaki Watanabe

    Journal of Alloys and Compounds   446-447   539 - 542   2007.10

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    DOI: 10.1016/j.jallcom.2007.01.101

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  • Absorption of atomic hydrogen by vanadium Reviewed

    Yuji Hatano, Andrei Busnyuk, Alexander Livshits, Yukio Nakamura, Masao Matsuyama

    Fusion Science and Technology   52 ( 3 )   613 - 617   2007.10

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    DOI: 10.13182/FST07-A1556

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  • Influence of heat treatment on tritium distribution in V-4Cr-4Ti alloy Reviewed

    H. Homma, Y. Hatano, H. Daifuku, H. Saitoh, T. Nagasaka, T. Muroga, M. Hara, Y. Nakamura, M. Matsuyama

    Journal of Nuclear Materials   367-370 A ( SPEC. ISS. )   887 - 891   2007.8

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    DOI: 10.1016/j.jnucmat.2007.03.051

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  • Diffusional behavior of tritium in V-4Cr-4Ti alloy Reviewed

    K. Hashizume, J. Masuda, T. Otsuka, T. Tanabe, Y. Hatano, Y. Nakamura, T. Nagasaka, T. Muroga

    Journal of Nuclear Materials   367-370 A ( SPEC. ISS. )   876 - 881   2007.8

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    DOI: 10.1016/j.jnucmat.2007.03.239

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  • Recent results on beryllium and beryllides in Japan Reviewed

    Y. Mishima, N. Yoshida, H. Kawamura, K. Ishida, Y. Hatano, T. Shibayama, K. Munakata, Y. Sato, M. Uchida, K. Tsuchiya, S. Tanaka

    Journal of Nuclear Materials   367-370 B ( SPEC. ISS. )   1382 - 1386   2007.8

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    DOI: 10.1016/j.jnucmat.2007.04.001

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  • Diffusion and trapping of tritium in vanadium alloys Reviewed

    J. Masuda, K. Hashizume, T. Otsuka, T. Tanabe, Y. Hatano, Y. Nakamura, T. Nagasaka, T. Muroga

    Journal of Nuclear Materials   363-365 ( 1-3 )   1256 - 1260   2007.6

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    DOI: 10.1016/j.jnucmat.2007.01.176

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  • Probability of absorption/implantation of low-energy H<inf>2</inf>+ ions in O-covered vanadium Reviewed

    A. Livshits, Y. Hatano, V. Alimov, M. Matsuyama

    Journal of Nuclear Materials   363-365 ( 1-3 )   801 - 805   2007.6

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    DOI: 10.1016/j.jnucmat.2007.01.103

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  • Improvement in high temperature stability of Pd coating on Nb by Nb<inf>2</inf>C intermediate layer Reviewed

    Yuji Hatano, Keita Ishiyama, Hirofumi Homma, Kuniaki Watanabe

    International Journal of Hydrogen Energy   32 ( 5 )   615 - 619   2007.4

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    DOI: 10.1016/j.ijhydene.2006.06.045

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  • Observation of Tritium Distribution in Low-Activation V-4Cr-4Ti Alloy by Radioluminography

    Sakamura Takashi, Saitoh Hideyuki, Homma Hirofumi, Hatano Yuji, Nagasaka Takuya, Muroga Takeo, Nakamura Yukio

    Journal of the Japan Institute of Metals and Materials   71 ( 5 )   482 - 487   2007

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    DOI: 10.2320/jinstmet.71.482

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  • Effects of bulk impurity concentration on the reactivity of metal surface: Sticking of hydrogen molecules and atoms to polycrystalline Nb containing oxygen Reviewed

    Yuji Hatano, Kuniaki Watanabe, Alexander Livshits, Andrei Busnyuk, Vasily Alimov, Yukio Nakamura, Ken Ichi Hashizume

    Journal of Chemical Physics   127 ( 20 )   2007

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    DOI: 10.1063/1.2804874

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  • Development of PVD - TiAlN/a-C nanocomposite coating for pressure die casting applications Reviewed

    Masateru Nose, Tokimasa Kawabata, Miki Ohi, Takekazu Nagae, Seiichi Masa, Yuji Hatano, Susumu Ikeno, Kiyoshi Nogi

    Plasma Processes and Polymers   4 ( SUPPL.1 )   S681 - S686   2007

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    DOI: 10.1002/ppap.200731705

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  • A newly developed non-destructive tritium measurement technique and its application to V-4Cr-4Ti alloy Reviewed

    Xiang Liu, Xue Chen, H. Homma, Y. Hatano, M. Matsuyama

    Plasma Science and Technology   8 ( 6 )   741 - 744   2006.11

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    DOI: 10.1088/1009-0630/8/6/26

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  • Interactions between molten Flibe and metallic Be Reviewed

    M. Hara, Y. Hatano, M. F. Simpson, G. R. Smolik, J. P. Sharp, Y. Oya, K. Okuno, M. Nishikawa, T. Terai, S. Tanaka, R. A. Anderl, D. A. Petti, D. K. Sze

    Fusion Engineering and Design   81 A ( 1-4 )   561 - 566   2006.2

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    DOI: 10.1016/j.fusengdes.2005.06.372

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  • Influence of oxygen and carbon on performance of superpermeable membranes Reviewed

    Y. Hatano, A. Livshits, Y. Nakamura, A. Busnyuk, V. Alimov, C. Hiromi, N. Ohyabu, K. Watanabe

    Fusion Engineering and Design   81 A ( 1-4 )   771 - 776   2006.2

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    DOI: 10.1016/j.fusengdes.2005.06.368

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  • Quantitative measurement of beryllium-controlled redox of hydrogen fluoride in molten Flibe Reviewed

    Michael F. Simpson, Galen R. Smolik, John P. Sharpe, Robert A. Anderl, David A. Petti, Yuji Hatano, Masanori Hara, Yasuhisa Oya, Satoshi Fukada, Satoru Tanaka, Takayuki Terai, Dai Kai Sze

    Fusion Engineering and Design   81 A ( 1-4 )   541 - 547   2006.2

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    DOI: 10.1016/j.fusengdes.2005.08.031

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  • JUPITER-II molten salt Flibe research: An update on tritium, mobilization and redox chemistry experiments Reviewed

    David A. Petti, G. R. Smolik, Michael F. Simpson, John P. Sharpe, R. A. Anderl, S. Fukada, Y. Hatano, M. Hara, Y. Oya, T. Terai, D. K. Sze, S. Tanaka

    Fusion Engineering and Design   81 ( 8-14 PART B )   1439 - 1449   2006.2

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    DOI: 10.1016/j.fusengdes.2005.08.101

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  • Effects of bulk modification by Pd on electrochemical properties of MgNi Reviewed

    Tiejun Ma, Yuji Hatano, Takayuki Abe, Kuniaki Watanabe

    Journal of Alloys and Compounds   391 ( 1-2 )   313 - 317   2005.4

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    DOI: 10.1016/j.jallcom.2004.08.071

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  • Hydrogen absorption capability of a niobium panel for pumping neutral atoms in divertor region Reviewed

    Y. Nakamura, A. I. Livshits, Y. Nakahara, Y. Hatano, A. Busnyuk, N. Ohyabu

    Journal of Nuclear Materials   337-339 ( 1-3 SPEC. ISS. )   461 - 465   2005.3

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    DOI: 10.1016/j.jnucmat.2004.10.012

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  • Influence of microstructure of tungsten on solid state reaction rate with amorphous carbon film Reviewed

    Y. Hatano, M. Takamori, K. Nogita, K. Matsuda, S. Ikeno, K. Watanabe

    Journal of Nuclear Materials   337-339 ( 1-3 SPEC. ISS. )   902 - 906   2005.3

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    DOI: 10.1016/j.jnucmat.2004.10.098

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  • Surface segregation of Ti in a V-4Cr-4Ti alloy and its influence on the surface reaction rates of hydrogen isotopes

    Y Hatano, R Hayakawa, K Nishino, S Ikeno, T Nagasaka, T Muroga, K Watanabe

    MATERIALS TRANSACTIONS   46 ( 3 )   511 - 516   2005.3

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    DOI: 10.2320/matertrans.46.511

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  • Influence of heat treatment on hydrogen ingress into V-4Cr-4Ti alloy Reviewed

    Ryo Hayakawa, Yuji Hatano, Ken Ichi Fukumoto, Hideki Matsui, Kuniaki Watanabe

    Journal of Nuclear Materials   329-333 ( 1-3 PART A )   411 - 415   2004.8

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    DOI: 10.1016/j.jnucmat.2004.04.078

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  • Kinetics of dissociative absorption of hydrogen through Nb surface covered by oxygen

    Yuji Hatano, Alexander Livshits, Andrei Busnyuk, Mamoru Nomura, Kenici Hashizume, Masayasu Sugisaki, Yukio Nakamura, Nobuyoshi Ohyabu, Kuniaki Watanabe

    PHYSICA SCRIPTA   T108   14 - 18   2004

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    DOI: 10.1238/Physica.Topical.108a00014

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  • Barrier effect against hydrogen ingress by Ti segregating to surface of V-Ti alloy

    Ryo Hayakawa, Yuji Hatano, Alexander Pisarev, Kuniaki Watanabe

    PHYSICA SCRIPTA   T108   38 - 41   2004

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    DOI: 10.1238/Physica.Topical.108a00038

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  • Kinetics of dissociative absorption of hydrogen through Nb surface covered by Oxygen Reviewed

    Yuji Hatano, Alexander Livshits, Andrei Busnyuk, Mamoru Nomura, Kenici Hasizume, Masayasu Sugisaki, Yukio Nakamura, Nobuyoshi Ohyabu, Kuniaki Watanabe

    Physica Scripta T   T108   14 - 18   2004

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    DOI: 10.1238/Physica.Topical.108a00014

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  • Barrier effect against hydrogen ingress by Ti segregating to surface of V-Ti alloy Reviewed

    Ryo Hayakawa, Yuji Hatano, Alexander Pisarev, Kuniaki Watanabe

    Physica Scripta T   T108   38 - 41   2004

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    DOI: 10.1238/Physica.Topical.108a00038

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  • Effects of Pd addition on electrochemical properties of MgNi

    Ma, T., Hatano, Y., Abe, T., Watanabe, K.

    Journal of Alloys and Compounds   372 ( 1-2 )   2004

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    DOI: 10.1016/j.jallcom.2003.09.148

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  • Gas-driven hydrogen permeation in the surface-limited regime Reviewed

    A. Pisarev, V. Shestakov, R. Hayakawa, Y. Hatano, K. Watanabe

    Journal of Nuclear Materials   320 ( 3 )   214 - 222   2003.8

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    DOI: 10.1016/S0022-3115(03)00110-7

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  • Hydrogen absorption by Pd-coated ZrNi prepared by using Barrel-Sputtering System Reviewed

    M. Hara, Y. Hatano, T. Abe, K. Watanabe, T. Naitoh, S. Ikeno, Y. Honda

    Journal of Nuclear Materials   320 ( 3 )   265 - 271   2003.8

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    DOI: 10.1016/S0022-3115(03)00189-2

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  • Electrochemical studies of the effect of surface modification of amorphous MgNi electrodes by carbon or Ni Reviewed

    Takayuki Abe, Sachio Inoue, Daobin Mu, Yuji Hatano, Kuniaki Watanabe

    Journal of Alloys and Compounds   349 ( 1-2 )   279 - 283   2003.2

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    DOI: 10.1016/S0925-8388(02)00901-5

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  • Flibe-D<inf>2</inf> permeation experiment and analysis

    Fukada, S., Anderl, R.A., Pawelko, R.J., Smolik, G.R., Schuetz, S.T., O{'}Brien, J.E., Nishimura, H., Hatano, Y., Terai, T., Petti, D.A., Sze, D.-K., Tanaka, S.

    Fusion Science and Technology   44 ( 2 )   2003

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    DOI: 10.13182/FST03-A369

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  • Surface segregation and oxidation of Ti in a V-Ti alloy Reviewed

    Ryo Hayakawa, Yuji Hatano, Katsuhiko Fujii, Ken Ichi Fukumoto, Hideki Matsui, Kuniaki Watanabe

    Journal of Nuclear Materials   307-311 ( 1 SUPPL. )   580 - 584   2002.12

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    DOI: 10.1016/S0022-3115(02)01100-5

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  • Solid state reaction between tungsten and amorphous carbon Reviewed

    Yuji Hatano, Miyuki Takamori, Kenji Matsuda, Susumu Ikeno, Katsuhiko Fujii, Kuniaki Watanabe

    Journal of Nuclear Materials   307-311 ( 2 SUPPL. )   1339 - 1343   2002.12

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    DOI: 10.1016/S0022-3115(02)00986-8

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  • Initial studies of tritium behavior in flibe and flibe-facing material Reviewed

    S. Fukada, R. A. Anderl, Y. Hatano, S. T. Schuetz, R. J. Pawelko, D. A. Petti, G. R. Smolik, T. Terai, M. Nishikawa, S. Tanaka, A. Sagara

    Fusion Engineering and Design   61-62   783 - 788   2002.11

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    DOI: 10.1016/S0920-3796(02)00204-1

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  • Surface modification of MgNi by perylene Reviewed

    Tiejun Ma, Yuji Hatano, Takayuki Abe, Kuniaki Watanabe

    Materials Transactions   43 ( 11 )   2711 - 2716   2002.11

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    DOI: 10.2320/matertrans.43.2711

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  • Fabrication of photocatalytic TiO<inf>2</inf> films on pure aluminum plates Reviewed

    Susumu Ikeno, Tokimasa Kawabata, Hiroaki Hayashi, Kenji Matsuda, Seiichi Rengakuji, Toshiaki Suzuki, Yuji Hatano, Katsuyoshi Tanaka

    Materials Transactions   43 ( 5 )   939 - 945   2002.5

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    DOI: 10.2320/matertrans.43.939

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  • Superpermeability in fusion technology: Tritium accumulation and compression Reviewed

    Alexander I. Livshits, Yuji Hatano, Kuniaki Watanabe

    Fusion Science and Technology   41 ( 3 II )   882 - 886   2002.5

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    DOI: 10.13182/fst02-a22711

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  • Hydrogenation of MgNi2 by atomic hydrogen at elevated temperatures

    Y Hatano, K Watanabe

    MATERIALS TRANSACTIONS   43 ( 5 )   1105 - 1109   2002.5

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    DOI: 10.2320/matertrans.43.1105

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  • Observation of hydrogen distribution in oxidized Zircaloy-2 with tritium microautoradiography Reviewed

    Hitoshi Hanada, Yuji Hatano, Kanetsugu Isobe, Kan Sakamoto, Masayasu Sugisaki

    Fusion Science and Technology   41 ( 3 II )   915 - 918   2002.5

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    DOI: 10.13182/fst02-a22718

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  • Degradation kinetics of discharge capacity for amorphous Mg-Ni electrode Reviewed

    D. Mu, Y. Hatano, T. Abe, K. Watanabe

    Journal of Alloys and Compounds   334 ( 1-2 )   232 - 237   2002.2

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    DOI: 10.1016/S0925-8388(01)01759-5

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  • Electrochemical behavior of amorphous MgNi as negative electrodes in rechargeable Ni-MH batteries Reviewed

    Takayuki Abe, Tomoyuki Tachikawa, Yuji Hatano, Kuniaki Watanabe

    Journal of Alloys and Compounds   330-332   792 - 795   2002.1

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    DOI: 10.1016/S0925-8388(01)01589-4

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  • Degradation of amorphous MgNi electrode and effect of heat treatment in Ar Reviewed

    Yuji Hatano, Tomoyuki Tachikawa, Daobin Mu, Takayuki Abe, Kuniaki Watanabe, Shotaro Morozumi

    Journal of Alloys and Compounds   330-332   816 - 820   2002.1

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    DOI: 10.1016/S0925-8388(01)01455-4

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  • Relation between recombination rate constant of deuterium at niobium surface and oxygen concentration in bulk Reviewed

    R. Hayakawa, A. Busnyuk, Y. Hatano, A. Livshits, K. Watanabe

    Physica Scripta T   103   113 - 116   2002

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  • Diffusion behavior of sulfur in p(1×1) phase of S/Ni(1 0 0) system Reviewed

    S. Tsukawaki, Y. Hatano, K. Hashizume, M. Sugisaki

    Surface Science   476 ( 1-2 )   115 - 120   2001.3

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    DOI: 10.1016/S0039-6028(00)01130-4

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  • Recovery of hydrogen isotopes by pd-coated zrni from inert gas atmosphere containing impurities

    Ashida, K., Hatano, Y., Nishida, W., Watanabe, K., Amano, A., Matsuda, K., Ikeno, S.

    Journal of Nuclear Science and Technology   38 ( 11 )   2001

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    DOI: 10.1080/18811248.2001.9715122

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  • Hydrogenation of MgNi2 by rf-discharged hydrogen plasma Reviewed

    Y Hatano, K Watanabe

    PRICM 4: FORTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, VOLS I AND II   461 - 464   2001

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  • Diffusion behavior of sulfur in the p(1 × 1) phase of a S/Ni(111) system Reviewed

    S. Tsukawaki, Y. Hatano, K. Hashizume, M. Sugisaki

    Surface Science   457 ( 1 )   63 - 70   2000.6

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    DOI: 10.1016/S0039-6028(00)00334-4

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  • Permeation of hydrogen through vanadium under helium ion irradiation Reviewed

    Yuji Hatano, Yoshiyasu Nanjo, Ryo Hayakawa, Kuniaki Watanabe

    Journal of Nuclear Materials   283-287 ( PART II )   868 - 871   2000

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    DOI: 10.1016/S0022-3115(00)00139-2

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  • Role of intermetallic precipitates in hydrogen transport through oxide films on Zircaloy Reviewed

    Yuji Hatano, Masayasu Sugisaki, Koji Kitano, Masayuki Hayashi

    ASTM Special Technical Publication   ( 1354 )   901 - 917   2000

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    DOI: 10.1520/stp14333s

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  • Charge and discharge characteristics of sintered Mg<inf>2</inf>Ni Reviewed

    Kuniaki Watanabe, Wei Min Shu, Kenzo Mizukami, Kohji Kobayashi, Yuji Hatano, Shotaro Morozumi

    Journal of Alloys and Compounds   293   626 - 631   1999.12

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    DOI: 10.1016/S0925-8388(99)00355-2

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  • Observation of spatial distribution of tritium in zirconium alloy with microautoradiography Reviewed

    K. Isobe, Y. Hatano, M. Sugisaki, T. Hayashi, M. Nishi, K. Okuno

    Journal of Nuclear Materials   271-272   326 - 329   1999.5

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    DOI: 10.1016/S0022-3115(98)00694-1

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  • Hydrogen isotope electromigration and impurity effect in vanadium Reviewed

    K. Fujii, K. Hashizume, Y. Hatano, M. Sugisaki

    Journal of Alloys and Compounds   282 ( 1-2 )   38 - 43   1999

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    DOI: 10.1016/S0925-8388(98)00827-5

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  • Transport mechanism of hydrogen through oxide film formed on zircaloy-4 Reviewed

    Y. Hatano, R. Hitaka, M. Sugisaki, M. Hayashi

    Journal of Radioanalytical and Nuclear Chemistry   239 ( 3 )   445 - 448   1999

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    DOI: 10.1007/BF02349048

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  • Effect of surface modification by heating in argon on charge/discharge characteristics of Mg<inf>2</inf>Ni electrode Reviewed

    Yuji Hatano, Tomoyuki Tachikawa, Koji Kobayashi, Katsunori Mori, Kuniaki Watanabe, Shotaro Morozumi

    Materials Transactions, JIM   40 ( 9 )   919 - 922   1999

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    DOI: 10.2320/matertrans1989.40.919

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  • Tracer diffusion coefficient of tritium in vanadium and trapping effect due to zirconium impurity

    K Fujii, K Hashizume, Y Hatano, M Sugisaki

    JOURNAL OF ALLOYS AND COMPOUNDS   270 ( 1-2 )   42 - 46   1998.5

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    DOI: 10.1016/S0925-8388(98)00354-5

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  • Influence of surface impurities on plasma-driven permeation of deuterium through nickel Reviewed

    Yuji Hatano, Hirofumi Nakamura, Hirotaka Furuya, Masayasu Sugisaki

    Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films   16 ( 4 )   2078 - 2083   1998

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    DOI: 10.1116/1.581313

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  • Observation of the spatial distribution of hydrogen in Zircaloy-2 oxidized in H<inf>2</inf>O steam at 723 K by a technique of tritium microautoradiography Reviewed

    K. Isobe, Y. Hatano, M. Sugisaki

    Journal of Nuclear Materials   248   315 - 318   1997.9

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    DOI: 10.1016/S0022-3115(97)00129-3

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  • Influence of size distribution of Zr(Fe,Cr)(2) precipitates on hydrogen transport through oxide film of Zircaloy-4

    Y Hatano, R Hitaka, M Sugisaki, M Hayashi

    JOURNAL OF NUCLEAR MATERIALS   248 ( 311-314 )   311 - 314   1997.9

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    DOI: 10.1016/S0022-3115(97)00128-1

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  • Auger electron spectroscopy study of oxidation behavior of iron and chromium in zr(fe, cr)<inf>2</inf> precipitate in zircaloy-4) Reviewed

    Yuji Hatano, Masayasu Sugisaki

    Journal of Nuclear Science and Technology   34 ( 3 )   264 - 268   1997.3

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    DOI: 10.1080/18811248.1997.9733659

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  • Oxidation behavior of iron and nickel in Zr<inf>2</inf>(Fe, Ni) precipitates in zircaloy-2

    Hatano, Y., Sugisaki, M.

    Journal of Nuclear Science and Technology   33 ( 11 )   1996

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    DOI: 10.1080/18811248.1996.9732016

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  • Measurement of diffusion coefficient of tritium in alpha-phase of zirconium based on glow discharge implantation method Reviewed

    Ken ichi Hashizume, Yuji Hatano, Kan Sakamoto, Masayasu Sugisaki

    Fusion Technology   28 ( 3 pt 2 )   1175 - 1178   1995.10

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    DOI: 10.13182/fst95-a30567

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  • Characterization of surface barrier effect upon tritium permeation through stainless steel with auger electron spectroscopy Reviewed

    Yuji Hatano, Toshio Maetani, Masayasu Sugisaki

    Fusion Technology   28 ( 3 pt 2 )   1182 - 1187   1995.10

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    DOI: 10.13182/fst95-a30569

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▼display all

Books

  • アクティブラーニングで学ぶ震災・復興学

    ( Role: Joint author第6章 原子力発電の仕組みと福島第一原子力発電所事故)

    六花出版  2020 

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  • Tritium : fuel of fusion reactors

    Tanabe, Tetsuo(Chapter 9 Permeation and Permeation Barrier)

    Springer  2017  ( ISBN:9784431564584

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    Total pages:xii, 365 p.   Language:English  

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  • 核融合炉燃料(共著)(市村憲司編 水素の物性・反応の機能性化と応用)

    アイピーシー  2001 

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MISC

  • Vacancy Cluster Formation and Hydrogen Isotope Exposure Effects on Neutron Irradiated Tungsten

    矢嶋美幸, 波多野雄治, 外山健, 外山健, 桑原竜弥, 桑原竜弥, 井上耕治, 大野哲靖

    プラズマ・核融合学会年会(Web)   41st   2024

  • Effect of rhenium doping on vacancy formation in tungsten by electron irradiation

    外山健, ZHANG Zhaokuan, 井上耕治, 永井康介, 木野村淳, 波多野雄治

    アイソトープ・放射線研究発表会(Web)   61st   2024

  • 電子線照射されたタングステン中の空孔形成に対するレニウム添加効果

    外山健, ZHANG Zhaokuan, 井上耕治, 永井康介, 木野村淳, 波多野雄治

    日本金属学会講演大会(Web)   174th   2024

  • Molecular dynamics simulation of double strand breaks in DNA telomere structure simulating tritium beta decay

    中村浩章, 中村浩章, 石黒健人, 藤原進, 中田彩子, 波多野雄治, 齋藤誠紀, 安永卓生, 米谷佳晃

    日本物理学会講演概要集(CD-ROM)   78 ( 1 )   2023

  • Tritium retention in gaps of first wall and divertor tiles used in JET-ITER like wall experiments

    波多野雄治, LEE Suneui, 増崎貴, 時谷政行, 大矢恭久, 宮本光貴, 芦川直子, 矢嶋美幸, 鳥養祐二, 大塚哲平, 朝倉伸幸, 中村博文, 林巧, WIDDOWSON Anna, RUBEL Marek, LIKONEN Jari

    日本原子力学会秋の大会予稿集(CD-ROM)   2023   2023

  • Responses of Binary Tungsten Alloys to Heavy Ion Irradiation

    波多野雄治, WANG Jing, 外山健, 檜木達也, 藪内聖皓

    日本原子力学会秋の大会予稿集(CD-ROM)   2022   2022

  • Correlation between physicochemical properties of alloying elements and radiation tolerance of tungsten binary alloys

    波多野雄治, 道澤大地, 松本あずさ, 外山健, 藪内聖皓, 檜木達也

    日本放射化学会討論会(Web)   66th   2022

  • MD Evaluation on Tritium Decay of the Tolerance of DNA

    中村浩章, 中村浩章, 石黒健人, 宇佐見俊介, 斎藤誠紀, 藤原進, 波多野雄治

    プラズマ・核融合学会年会(Web)   39th   2022

  • Mechanism of DNA Damage by Tritium-Fluorescence Microscope Observation of Double-Strand Breaks and Simulation

    藤原進, 波多野雄治, 中村浩章

    日本物理学会誌   77 ( 1 )   2022

  • Tritium Retention In JET-Divertor Tiles

    大和田篤志, 鳥養祐二, 矢嶋美幸, 菊地絃太, 増崎貴, 大塚哲平, 芦川直子, 芦川直子, 時谷政行, 大矢恭久, LEE S. E., 波多野雄治, 朝倉伸行, 林巧, 小柳津誠, LIKONEN J., WIDDOWSON A., RUBEL M.

    日本放射化学会討論会(Web)   66th   2022

  • Molecular Dynamics Simulation on Tritium-Induced Damage of Biopolymers and Experimental System for Validation

    中村浩章, 中村浩章, 藤原進, 波多野雄治

    プラズマ・核融合学会誌   97 ( 10 )   2021

  • 置換トリチウムのβ崩壊に伴う高分子・DNA構造変化の分子シミュレーション

    藤原進, 斉藤真司, 阿蘇司, 中村浩章, 安永卓生, 波多野雄治, 剣持貴弘, 斎藤誠紀, 大矢恭久, 坂井亙, 和田拓郎, 水口朋子, 米谷佳晃, 斎木敏治, 宮西寿典, 大塚教雄, 李浩論

    分子研レターズ   84   2021

  • Where Should We Handle Tritium? Information of Facilities and Laboratories

    96 ( 8 )   420 - 422   2020.8

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  • How to Start Tritium Experiments(1)Engineering and Scientific Applications of Tritium : Present and Future

    96 ( 6 )   300 - 304   2020.6

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  • Tritium Behavior and Its Neutron Irradiation Effect

    96 ( 3 )   140 - 144   2020.3

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  • FRONTIER Project (2019-2024)

    96 ( 3 )   145 - 148   2020.3

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  • 電子線照射W-X合金(X=Mo,Ta,Re)中の照射欠陥形成に対する添加元素効果

    外山健, 波多野雄治, ZHAO Can, 井上耕治, 薮内敦, 木野村淳, 永井康介

    日本金属学会講演大会(Web)   166th   2020

  • 電子線照射されたW-X合金(X=Mo,Ta,Re)中の照射欠陥

    外山健, 波多野雄治, CAN Zhao, 井上耕治, 薮内敦, 木野村淳, 永井康介

    日本金属学会講演大会(Web)   167th   2020

  • Molecular dynamics simulation on structural change of polyethylene by beta decays of substituted-tritium

    藤原進, LI Haolun, 中村浩章, 中村浩章, 水口朋子, 安永卓生, 中田彩子, 宮崎剛, 大塚教雄, 剣持貴弘, 波多野雄治, 斉藤真司, 尾又一実

    日本物理学会講演概要集(CD-ROM)   75 ( 1 )   2020

  • MD analysis on Structural Change of Deoxyribose in Telomeric DNA by Tritium Beta decay

    中村浩章, 中村浩章, 石黒健人, 藤原進, 水口朋子, 米谷佳晃, 安永卓生, 中田彩子, 宮崎剛, 大塚教雄, 剣持貴弘, 波多野雄治, 斉藤真司

    プラズマ・核融合学会年会(Web)   37th   2020

  • Structural disruption of telomeric DNA by tritium beta decay

    中村浩章, 中村浩章, 宮西寿典, 藤原進, 水口朋子, 安永卓生, 中田彩子, 宮崎剛, 大塚教雄, 剣持貴弘, 波多野雄治, 斉藤真司, 尾又一実

    日本物理学会講演概要集(CD-ROM)   75 ( 1 )   2020

  • Non-destructive depth profiling of tritium in graphite tiles from Large Helical Device using β-ray induced X-ray spectrometry and Monte Carlo simulation

    Lee Sun Eui

    38 ( 38 )   1 - 8   2019.12

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    A special experimental setup was designed and constructed to perform simultaneousmultipoint measurements of β-ray induced X-ray spectra for non-destructive depthprofiling of tritium in plasma-facing tiles retrieved from fusion devices. The setupconsists of compact silicon drift detector and an airtight acrylic chamber. The plasmafacinggraphite tiles used in the deuterium experiment of Large Helical Device (LHD) inNational Institute for Fusion Science (NIFS) were examined. The obtained X-ray spectrawere simulated using Monte Carlo simulation tool kit Geant4. It has been found thattritium penetrated beyond the carbon deposition layer.

    DOI: 10.15099/00020163

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  • 熱力学的モデルによるタングステン中の二原子空孔の安定性

    大沢一人, 外山健, 波多野雄治, 渡邊英雄

    日本金属学会講演大会(Web)   165th   2019

  • JET-ILW実験で使用されたWダイバータタイルおよびBeリミタタイルの微細構造

    時谷政行, 宮本光貴, 増崎貴, 波多野雄治, 大矢恭久, 大塚哲平, 濱口大, 黒滝宏紀, 小柳津誠, 鈴木卓美, 鈴木達也, 磯部兼嗣, 林巧, 朝倉伸幸, WIDDOWSON Anna, JACHMICH Stefan, RUBEL Marek

    プラズマ・核融合学会年会(Web)   36th   2019

  • Deuterium-trapping at irradiation-induced defects in tungsten studied by positron annihilation spectroscopy

    ( 12 )   23 - 29   2019

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  • 炉内トリチウムインベントリの評価に向けて

    染谷洋二, 大矢恭久, 芦川直子, 波多野雄治, 増崎貴, 小林真, 大塚哲平, 信太祐二, 日渡良爾, 磯部兼嗣

    プラズマ・核融合学会年会(Web)   36th   2019

  • タングステン二原子空孔の構造と水素による安定化に関する研究

    大沢一人, 山口正剛, 波多野雄治, 外山健, 渡邊英雄

    日本金属学会講演概要(CD-ROM)   164th   2019

  • JET-ILW実験で生成されたダストの特性

    大塚哲平, 芦川直子, 芦川直子, 増崎貴, 波多野雄治, 鳥養祐二, 朝倉伸幸, 磯部兼嗣, 林巧, 時谷政行, 時谷政行, 大矢恭久, 谷川博康, 中道勝, WIDDOWSON Anna, RUBEL Marek

    プラズマ・核融合学会年会(Web)   36th   2019

  • DNAへのトリチウムのβ崩壊による構造変化

    中村浩章, 中村浩章, 宮西寿典, 藤原進, 水口朋子, 安永卓生, 中田彩子, 宮崎剛, 大塚教雄, 剣持貴弘, 波多野雄治, 斉藤真司

    プラズマ・核融合学会年会(Web)   36th   2019

  • タングステン二原子空孔中の水素の安定構造とその同位体の影響

    大沢一人, 波多野雄治, 山口正剛, 外山健, 渡邊英雄

    日本金属学会講演概要(CD-ROM)   163rd   2018

  • 照射効果を考慮した核融合炉材料中の水素同位体蓄積量評価

    波多野雄治, ALIMOV Vladimir Kh., 大矢恭久, 近藤創介, 檜木達也, 染谷洋二

    核融合エネルギー連合講演会(CD-ROM)   12th   2018

  • BCC金属中の空孔型欠陥の安定性と水素の影響

    大沢一人, 外山健, 山口正剛, 波多野雄治, 渡邊英雄

    日本金属学会講演概要(CD-ROM)   162nd   2018

  • 高温中性子照射したタングステン中における水素同位体挙動

    大矢恭久, 小林真, 大塚哲平, 片山一成, 信太祐二, 山内有二, 原正憲, 波多野雄治, 島田雅, BUCHENAUER Dean, 加藤雄大

    核融合エネルギー連合講演会(CD-ROM)   12th   2018

  • CuCrZr合金および酸化物分散強化Cu合金の水素同位体吸収・放出特性

    波多野雄治, SHI Peng, XIANG Xin, 外山健, 近藤創介, 檜木達也

    日本原子力学会春の年会予稿集(CD-ROM)   2018   2018

  • トリチウムのヘリウム3への壊変によるポリエチレンの構造変化に関する分子動力学シミュレーション

    LI Haolun, 藤原進, 水口朋子, 橋本雅人, 中村浩章, 中村浩章, 安永卓生, 中田彩子, 宮崎剛, 大塚教雄, 剣持貴弘, 波多野雄治, 斉藤真司

    高分子学会予稿集(CD-ROM)   67 ( 2 )   2018

  • JET-ITER like wallから発生したダスト粒子のトリチウム保持特性

    大塚哲平, 増崎貴, 芦川直子, 波多野雄治, 朝倉伸幸, 鈴木卓美, 鈴木達也, 磯部兼嗣, 林巧, 時谷政行, 大矢恭久, 濱口大, 黒滝宏紀, 坂本隆一, 谷川博康, 中道勝, WIDDOWSON A., RUBEL M.

    日本原子力学会春の年会予稿集(CD-ROM)   2018   2018

  • トリチウムからのβ線によるDNA二重鎖切断の定量的評価

    胡中優奈, 波多野雄治, 剣持貴弘, 大矢恭久, 中村浩章

    日本原子力学会春の年会予稿集(CD-ROM)   2018   2018

  • MD simulation on DNA decay by Tritium disintegration to Helium-3

    Nakamura Hiroaki, Hatano Yuji, Saito Shinji, Miyanishi Hisanori, Fujiwara Susumu, Mizuguchi Tomoko, Yasunaga Takuo, Nakata Ayako, Miyazaki Tsuyoshi, Otsuka Takao, Kenmotsu Takahiro

    Meeting Abstracts of the Physical Society of Japan   73 ( 0 )   368 - 368   2018

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    DOI: 10.11316/jpsgaiyo.73.2.0_368

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  • Tritium Behavior and Neutron Irradiation Effect

    93 ( 3 )   139 - 143   2017.3

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  • Neutron Irradiation Plan

    93 ( 3 )   133 - 135   2017.3

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  • 中性子による炭素材料の特性変化と核融合炉への適応性評価

    渥美寿雄, 波多野雄治, 庭瀬敬右, 車田亮, 大塚哲平

    東北大学金属材料研究所附属量子エネルギー材料科学国際研究センター共同利用研究経過報告書(CD-ROM)   34   2017

  • Development of triton target for measurement of a two neutron transfer reaction in inverse kinematics.

    Koiwai Takuma, Kumon Taku, Shimizu Yuma, Niikura Mugumi, Imai Nobuaki, Hatano Yuji, Wimmer Kathrin

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   357 - 357   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_357

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  • 欠陥導入タングステン中の水素同位体滞留量に及ぼす炭素・ヘリウム照射影響

    東奎介, 戸苅陽大, ZHOU Qilai, 波多野雄治, 吉田直亮, 近藤創介, 檜木達也, 島田雅, TAYLOR Chase N., BUCHENAUER Dean A., KOLASINSKI Robert D., 近田拓未, 大矢恭久

    日本原子力学会秋の大会予稿集(CD-ROM)   2017   2017

  • 金属中の二原子空孔の安定構造と水素の影響

    大沢一人, 山口正剛, 外山健, 波多野雄治, 渡邊英雄

    日本金属学会講演概要(CD-ROM)   161st   2017

  • Superabundant vacancy formation induced by hydrogen in tungsten

    Osawa Kazuhito

    ( 148 )   25 - 33   2015.3

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    We investigate superabundant vacancy formation induced by hydrogen (H) in tungsten (W) in terms of an equilibrium thermodynamic model. Stable configulations of multiple H atoms trapped in a W vacancy and binging enegies are estimated by first-principle calculations. The structures of H atoms in a W vacancy are abnormal compared with those in usual bcc transition metals, that is, a maximum of 12 H atoms can be accommodated in the vacancy. Isotope effects are examined by taking into account zero point vibration energies of the H atoms. The profiles of vacancy-hydrogen (V-H) cluster concentrations in a bulk tungsten are calculated as a function of the H concentration at finite temperature. V-H clusters trapping more than six H atoms exist in the present model. However, the major V-H clusters are composed of six H atoms in a wide range of temperature and H concentration.

    DOI: 10.15017/1543589

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  • ダスト粒子中のトリチウム定量技術の開発

    大塚哲平, 波多野雄治

    日本原子力学会春の年会予稿集(CD-ROM)   2015   2015

  • Direct measurement of retained tritium in dust particles released from JET-ILW

    芦川直子, 芦川直子, 朝倉伸幸, 磯部兼嗣, 小柳津誠, 原正憲, WIDDOWSON A., GRZONKA J., RUBEL M., 大塚哲平, 黒滝宏紀, 濱口大, 中野優, KIM J.H., 波多野雄治, 谷川博康, 中道勝, 山西敏彦

    プラズマ・核融合学会年会(Web)   32nd   2015

  • Surface Properties and Retention of Helium in Stainless Steel Exposed to LHD Plasmas

    35   1 - 12   2015

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    Modification of the plasma facing surface of LHD and its effects on the retention and desorption of He were examined by exposing 316L stainless steel coupons to LHD plasmas. In the erosion dominant area, formation of dense He bubbles and mixing of deposited impurities (C, O, Fe, Cr, Ni) occurred in a subsurface region of about 20 nm-thick. In the deposition dominant area, the surface was covered by a porous carbon rich layer. Retention of He was saturated in both areas. In the erosion dominant area, He was trapped by the radiation-induced defects formed in the very thin subsurface region. The concentration of He trapped in the impurity deposition (He/C) in the deposition dominant area was estimated to be 0.9%.

    DOI: 10.15099/00016649

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  • Plasma-Wall Interaction Studies using Linear Plasma Devices

    HATANO Yuji, MIYAMOTO Mitsutaka, SHIMADA Masashi, UEDA Yoshio, TOKITANI Masayuki

    90 ( 8 )   489 - 495   2014.8

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  • Retention Enhancement of Hydrogen Isotope in Tungsten Exposed to LHD Plasma

    OYA Yasuhisa, MASUZAKI Suguru, TOKITANI Masayuki, WATANABE Hideo, YOSHIDA Naoaki, HATANO Yuji, MIYAMOTO Mitsutaka, YAMAUCHI Yuji, HINO Tomoaki, OKUNO Kenji

    90 ( 6 )   319 - 324   2014.6

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  • Measurements of Carbon Deposition Layers using Glow-Discharge Optical Emission Spectroscopy (GDOES)

    34   21 - 30   2014

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    In fusion devices with plasma-facing components manufactured from carbon-based materials, co-deposition of hydrogen isotopes and carbon takes place in regions where sputtering rate is relatively small. Fuel retention and recycling depend on properties of those deposits. Glow-discharge optical emission spectroscopy (GDOES) is one of attractive techniques to analyze chemical composition and thickness of these deposition layers. However, influence of hydrogen content on sputtering of these layers by glow-discharge plasma is not fully understood. In this study, two different types of carbon layer with quite different hydrogen content were deposited on stainless steel substrate, and sputtering rate during the GDOES measurement was examined for better interpretation of results obtained.

    DOI: 10.15099/00006567

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    Other Link: http://hdl.handle.net/10110/15002

  • 種々の照射欠陥を導入したタングステン中の水素同位体滞留挙動

    大矢恭久, 佐藤美咲, 湯山健太, ZHANG Long, 近藤創介, 檜木達也, 波多野雄治, 吉田直亮, 奥野健二

    核融合エネルギー連合講演会(CD-ROM)   10th   2014

  • A New Japan-US Joint Research Project : PHENIX

    UEDA Yoshio, HATANO Yuji

    89 ( 11 )   749 - 751   2013.11

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  • Irradiation-Tritium Synergism

    HATANO Yuji, OYA Yasuhisa, HARA Masanori, ODA Takuji, OTSUKA Teppei, SATO Koichi, ZHANG Kun

    89 ( 11 )   725 - 730   2013.11

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  • Development of a double-walled cell system for near-infrared spectroscopy

    33   35 - 43   2013

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    Near-infrared spectroscopy has potential as a new suitable tool to detect tritiated water (HTO, T2O). We previously carried out the initial study with a single-walled cell system and got some spectra of tritiated water vapor. Because of the radioactive nature of tritium, tritiated water was decomposed into tritium gas and oxygen by radiochemical reactions, and there was a need for a reoxidizing system and other updates to improve tritium recycling and safety issues. Therefore, we developed a new double-walled cell system and tested its basic performance. The performance of the cell was found to be appropriate for the prolonged measurement of the spectra of tritiated water vapor.

    DOI: 10.15099/00006559

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    Other Link: http://hdl.handle.net/10110/12856

  • Magnetic properties of ZrNi-H systems

    33   9 - 19   2013

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    We estimate the amount of hydrogen isotope gas stored in getter materials without using a desorption process and by measuring the magnetic susceptibility of ZrNi-H systems. The magnetic susceptibility of ZrNiH x increased with an increase in the hydrogen content, x, reaching a maximum value at x ? 0.5. As x > 0.5, the magnetic susceptibility began to decrease and reached a minimum value at x= 2.7. The behavior of magnetic susceptibility could be qualitatively modeled using the molar fractions of the ZrNi, monohydride, and trihydride phases observed using X-ray diffraction analysis.

    DOI: 10.15099/00006556

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    Other Link: http://hdl.handle.net/10110/12853

  • Tritium Systems of Fusion Reactor

    YAMANISHI Toshihiko, HATANO Yuji, AKAMARU Satoshi, ASAKURA Yamato, ISOBE Kanetsugu, IWAI Yasunori, OKUNO Kenji, ODA Takuji, OYA Yasuhisa, SUGIYAMA Takahiko, TANAKA Satoru, TORIKAI Yuji, NAKAMURA Hirofumi, HAYASHI Takumi, HARA Masanori

    88 ( 9 )   508 - 528   2012.9

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  • Thermodynamic properties of vacancy-hydrogen complex in tungsten

    Ohsawa Kazuhito, Hatano Yuuji, Yamaguchi Masatake, Hatano Yuji

    Reports of Research Institute for Applied Mechanics,Kyushu University   ( 143 )   29 - 32   2012.9

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    Formation energies for vacancy-hydrogen (V-H) complexes in tungsten (W) are calculated in terms of first-principles calculations. The dependence of concentration of V-H complexes on temperature and local H concentration is estimated assuming thermal equilibrium. It has been reported that a maximum of 12 H atoms are accommodated in a W monovacancy at 0 K. However, major monovacancies trap six H atoms in finite temperature.

    DOI: 10.15017/27132

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  • Sticking of H_2 on Oxygen-Covered Surface of Vanadium Doped with Oxygen to Various Bulk Concentrations

    Livshits Alexander, Busnuk Andrei, Alimov Vasily

    31 ( 31 )   33 - 48   2012.3

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    The sticking probability of Hz on the surface of polycrystalline V covered with oxygen was examined as a function of oxygen concentration in the bulk metal (0.4 to 3.3 at.%) at specimen temperatures from 200 to 1000℃. At all temperatures examined, the sticking probability was strongly dependent on the oxygen concentration in the bulk.Such correlation between the reaction rate of Hz on the surface and the oxygen concentration in the bulk was attributed to the dependence of concentration of oxygen vacancies (holes in surface oxygen coverage) on the oxygen bulk concentration. The values of sticking probability were relatively high even at the oxygen bulk concentration of 3.3 at.%; the oxygen coverage on vanadium was rather "holey" even at the oxygen concentration close to the solubility limit. The activation energy for H_2 dissociation on such holes in the coverage was evaluated to be 10 kJ/mol H_2.

    DOI: 10.15099/00006534

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  • 大型プラズマ装置に設置したタングステン試料中の水素同位体滞留能変化

    大矢恭久, 小林真, 藤島徹生, 増崎貴, 時谷政行, 吉田直亮, 日野友明, 山内有二, 波多野雄治, 奥野健二

    日本原子力学会春の年会予稿集(CD−ROM)   2012 ( 0 )   ROMBUNNO.A15 - 702   2012.3

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    Language:Japanese   Publishing type:Research paper, summary (national, other academic conference)   Publisher:一般社団法人 日本原子力学会  

    近年、核融合炉第一壁にはタングステンの利用が検討されている。タングステン中の水素滞留量はグラファイトと比較すると少ないが、照射損傷の有無によって大きく変化することがこれまでに多く報告されている。しかし、実際の核融合炉では種々の高エネルギー粒子による照射損傷のみならず、不純物等の堆積によってタングステン材料の水素滞留能力は大きく変化することが考えられる。そこで、本研究では大型プラズマ装置におけるプラズマ曝露によってタングステンの水素滞留能力がどのように変化する評価した。

    DOI: 10.11561/aesj.2012s.0.702.0

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  • Deuterium Retention in Self-Damaged Tungsten with and without Deposited Pd Layer

    Alimov VladimirKh

    32   9 - 20   2012

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    Influence of Pd deposition on deuterium (D) retention in W samples irradiated with W self-ions was examined to understand the correlation between the probability of occupation of radiation-induced traps by D and the concentration of D in a solid solution state under plasma exposure. W samples were irradiated with 4.8 MeV W ions to 0.65 and 12 dpa, and a thin Pd layer was deposited on the sample with the higher damage level by a technique of sputter-deposition. Then, the samples were exposed to DC glow-discharge D plasma at 403 K. In spite of the higher damage level, the concentration of trapped D in the damaged zone of the Pd-covered sample was far smaller than that in the non-covered one. The small D retention in the Pd-covered sample was explained by a decrease in the D concentration in the solution state owing to the enhanced recombinative release by Pd and the consequent reduction in the occupation probability of radiation-induced traps. These observations indicated that tritium inventory in neutron-irradiated W materials can be significantly reduced by enhancement of tritium reemission by surface modifications.

    DOI: 10.15099/00006544

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    Other Link: http://hdl.handle.net/10110/11464

  • Accomplishments of the Large Amount of Tritium Handling Technology (1) : Accumulation of the Safety Operation Experiences of Tritium Handling Facilities and the Related Safety Studies

    HATANO Yuji, YAMADA Masayuki, HAYASHI Takumi

    Journal of plasma and fusion research   86 ( 3 )   173 - 184   2010.3

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  • トリチウムプラズマ照射した金属材料表面および内部のトリチウム挙動(TITAN)

    大塚哲平, 島田雅, 上田良夫, 波多野雄治, CALDERONI P., SHARPE J.P., 田辺哲朗

    核融合エネルギー連合講演会(CD-ROM)   8th   2010

  • Tritium Permeation, Contamination and Decontamination

    HATANO Yuji, TORIKAI Yuji, OYA Yasuhisa, ODA Takuji, TANAKA Satoru, NAKAMURA Hirofumi, ASAKURA Yamato, OHUCHI Hiroko, OTSUKA Teppei, KOBAYASHI Kazuhiro

    Journal of plasma and fusion research   85 ( 10 )   726 - 735   2009.10

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  • Study on Molten-Salt Flibe Systems : 2. 1 Chemical Behavior of Flibe Molten Salt

    TERAI Takayuki, FUKADA Satoshi, HATANO Yuji, OYA Yasuhisa

    Journal of plasma and fusion research   85 ( 5 )   251 - 257   2009.5

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  • The Way to Know Tritium Transfer Process in Gaseous and Liquid Phases

    FUKADA Satoshi, HATANO Yuji, HARA Masanori

    Journal of plasma and fusion research   85 ( 1 )   31 - 35   2009.1

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  • Visualization of Hydrogen Distribution in Nuclear Materials with Tritium

    HATANO Yuji, SAITOH Hideyuki, HOMMA Hirofumi

    Materia Japan   47 ( 12 )   617 - 617   2008.12

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    Language:Japanese   Publisher:The Japan Institute of Metals and Materials  

    DOI: 10.2320/materia.47.617

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  • Tritium distribution on/beneath mechanically-treated surface of vanadium

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   28   33 - 42   2008

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    Tritium distribution on/beneath a mechanically-treated surface of vanadium was examined by an imaging plate (IP) technique. Enrichment of tritium was observed around WC indentation lefts and was ascribed to the trapping effects of defects induced by plastic deformation. 0n the other hand, such an increase in tritium concentration was not observed around the lefts of Vickers indentation due to a smaller extent of plastic deformation and higher compressive stress. The accuracy and spatial resolution of the IP technique were sufficient to distinguish the difference in tritium distributions in the areas treated by two different methods.

    DOI: 10.15099/00006512

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    Other Link: http://hdl.handle.net/10110/2754

  • Correlation between Hydrogen Distribution in V-4Cr-4Ti Alloy and Impact Strength

    Hatano Yuji, Homma Hirofumi, Sakamura Takashi, Saitoh Hideyuki, Nagasaka Takuya, Muroga Takeo, Matsuyama Masao

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan   2007 ( 0 )   851 - 851   2007

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    DOI: 10.11561/aesj.2007f.0.851.0

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  • Absorption and release of hydrogen isotopes by ZrC

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   27   27 - 36   2007

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  • Thremal Diffusion of Tritium in Vanadium alloys

    Ogushi Kazuhiro, Masuda Josuke, Hashizume Kenichi, Otsuka Teppei, Tanabe Tetsuo, Hatano Yuji, Nakamura Yukio, Nagasaka Takuya, Muroga Takeo

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan   2007 ( 0 )   852 - 852   2007

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    DOI: 10.11561/aesj.2007f.0.852.0

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  • バナジウム合金中のトリチウム挙動

    橋爪健一, 益田丈輔, 大塚哲平, 田辺哲朗, 波多野雄治, 中村幸男, 長坂琢也, 室賀健夫

    核融合エネルギー連合講演会予稿集   6th   2006

  • Diffusion of hydrogen in TiC

    HATANO Y.

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   26   31 - 43   2006

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    The diffusion coefficient of hydrogen in commercially supplied TiC powder was measured at 773, 873 and 973 K by hydrogen absorption experiments. The pre-exponential factor and activation energy were evaluated to be 10-11 m2? s-1 and 87±13 kJ?mol-1, respectively.

    DOI: 10.15099/00006498

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  • 視点--還る 水素同位体を利用した循環型エネルギーシステム

    波多野 雄治, 阿部 孝之

    未来材料   5 ( 8 )   2 - 5   2005.8

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  • Nuclear Materials and Hydrogen (3) ; Hydrogen Energy Materials

    HATANO Yuji, INOUE Mitsuhiro, ABE Takayuki, NAKAMORI Yuko, ORIMO Shinichi, NAGASAKI Takanori

    Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan   47 ( 1 )   15 - 24   2005.1

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    DOI: 10.3327/jaesj.47.15

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  • In-situ measurements of tritium desorption from a vanadium alloy by β-ray-induced X-ray spectrometry (BIXS)

    Liu Xiang, Homma H., Hatano Y., Matsuyama M.

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   25   63 - 70   2005

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    Thermal release of tritium from a vanadium alloy was investigated by means of β-ray-induced X-ray spectrometry (BIXS). The sample tested was a V-4Cr-4Ti alloy recrystallized by annealing at 1000 ?C for 2 h. A tritium gas diluted with hydrogen was characterized with a quadrupole mass spectrometer and a small ionization chamber, and the concentration of tritium was evaluated to be 0.14%. The sample was exposed to the tritium gas at 400 ?C. The total concentration of hydrogen isotopes absorbed in the sample was 0.17 at%, and the corresponding tritium concentration was 2.4 appm, respectively. Tritium started to desorb at 350 ?C. The duration of time required for desorption was much longer than that expected from the diffusion coefficient of tritium in the alloy, indicating that the rate of tritium release was controlled by a surface recombination process.

    DOI: 10.15099/00006492

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  • Adsorption and Segregation of Hydrogen on Clean Nb Surface

    Hatano Y., Alimov V., Livshits A., Nakamura Y., Ohyabu N., Matsuyama M

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   25   25 - 39   2005

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    Sticking coefficient of H2, α , on a clean Nb surface was measured as a function of specimen temperature (25 - 477 ?C) and hydrogen uptake. The initial value of sticking coefficient at negligible hydrogen uptake was ca. 0.25 and was independent of surface temperature. At any temperature examined, α showed a significant reduction with increase in hydrogen uptake, although the extent of reduction decreased with increasing temperature. Such reduction in α was ascribed to the increase in the surface coverage of hydrogen due to surface segregation and was explained by a model assuming equilibrium partitioning of hydrogen between the surface and the solid solution phase in the bulk.

    DOI: 10.15099/00006489

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  • Dissociative Absorption of Hydrogen through Nb Surface Covered by Oxygen

    Hatano Yuji, Livshits Alexander, Busnyuk Andrei, Alimov Vassili, Hashizume kenichi, Nakamura Yukio, Ohyabu Nobuyoshi, Watanabe Kuniaki

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan   2004 ( 0 )   702 - 702   2004

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    DOI: 10.11561/aesj.2004s.0.702.0

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  • Novel techniques of Pd coating for hydrogen storage materials and permeation membranes (共著)

    Proceedings of 15th World Hydrogen Energy Conference   2004

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  • Influence of Oxygen and Sulfur on Hydrogen Absorption by Vanadium

    Hayakawa Ryo, Nishino Kanako, Hatano Yuji, Alimov Vasily, Livshits Alexander, Ikeno Susumu, Nakamura Yukio, Ohyabu Nobuyoshi, Watanabe Kuniaki

    Annual report of Hydrogen Isotope Research Center,Toyama University   24   9 - 28   2004

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    Sticking coefficient of H2, α, on a vanadium surface was measured after heat treatments in vacuum at 673, 873, 973 and 1273 K. The values of α were comparable after heat treatments at 673, 873 and 973 K, while significant reduction was observed after heat treatment at 1273 K. Arrhenius plots of α showed that the pre-exponential factor, α0, was far smaller than unity for all heat treatment conditions. This observation indicated that only minor portions of surface sites were active for hydrogen ingress. Change in chemical surface state of V by heat treatments in vacuum at 673, 873, 1073 and 1273 K was also investigated by means of X-ray photoelectron spectroscopy. The specimen surface was mainly covered by VO at 673 K and by an oxygen adlayer at 873 K. Sulfur appeared at 1073 K and completely substituted for oxygen at 1273 K. Namely, sulfur became the dominant surface impurity in the temperature region where α showed significant reduction. It was therefore concluded that the barrier effect of oxygen, including formation of a VO layer, was much weaker than that of sulfur under the present conditions.

    DOI: 10.15099/00006483

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  • Construction of Computer System for Dose Assessment and its Operation

    HARA Masanori, AKAMARU Satoshi, HATANO Yuji, MATSUYAMA Masao, SHIBAO Yukinobu, WATANABE Kuniaki

    Annual report of Hydrogen Isotope Research Center,Toyama University   24   47 - 53   2004

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    A computer system for dose assessment was installed to evaluate radiation dose of each worker in a controlled area and to automatically produce reports on dose assessment. The main computer was connected to both a tritium monitor control computer and a gate control computer. This computer network has been isolated from a public network. The gate control computer registers data on working hours of each worker in the controlled area and on tritium concentration of each room. The dose assessment computer acquires essential data from the gate control computer to evaluate the radiation dose of each worker. The potential of the specialized network system to improve dose assessment was examined over a period of two years. It was found that this system significantly contributed to improvement of dose assessment. The basis of assessment was made clear, and reports on dose assessment without errors were readily produced.

    DOI: 10.15099/00006486

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  • HYDROGEN ABSORPTION BY VANADIUM ALLOYS

    Hatano Yuji, Hayakawa Ryo, Watanabe Kuniaki

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan   2003 ( 0 )   572 - 572   2003

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    DOI: 10.11561/aesj.2003f.0.572.0

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  • Sputtering of Oxygen on Nb Surface by Hydrogen Ions

    Hatano Yuji, Busnyuk Andrei, Livshits Alexander, Nakamura Yukio, Ohyabu Nobuyoshi, Watanabe Kuniaki

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   23   17 - 27   2003

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    The rate of oxygen removal from an oxygen-doped Nb membrane by hydrogen ion sputtering was examined by measuring the change in the sticking coefficient of H2, α. First, the temperature dependence of α was measured at various oxygen concentrations to investigate correlation between bulk oxygen concentration and α. Then the oxygen concentration in the membrane was adjusted to 1.5 at%, and the surface of the membrane was irradiated by hydrogen ions of 600 eV at 1113 K. The change in α with sputtering time was measured, and the reduction in bulk oxygen concentration was estimated from the extent of change in α. The oxygen concentration decreased with increasing sputtering time by continuous surface segregation of oxygen and sputtering. The sputtering yield of oxygen on the Nb membrane surface was evaluated to range from 0.012 to 0.036.

    DOI: 10.15099/00006478

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  • Study of Hydrogen Adsorption by V, V-Ti alloy and V-oxide through ab initio Calculations

    WANG L., Hayakawa R., Hatano Y., Watanabe K.

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   23   29 - 41   2003

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    The adsorption of hydrogen on surfaces of vanadium, vanadium-titatnium alloy and vanadium oxide was studied by ab initio calculations using Gaussian03 package. The activation and adsorption energies for adsorption were evaluated by scanning potential energy surfaces of respective systems comprising a hydrogen molecule and small cluster consisting of several metal atoms for modelling an alloy surface to reduce computational cost. The surfaces investigated were V(110), V-Ti(110), VO(111) and VO(110), diaerent cluster models being adopted for some surfaces to examine their validities and to and an appropriate cluster model and adsorption site. By comparing the results obtained by using the alloy and/or compound in diaerent cases, it was found that the activation energy for adsorption is larger for surfaces with an oxygen adlayer than for clean and Ti-covered vanadium surfaces. These andings are in good agreement with experimental observations. It was also demonstrated that diaerent cluster models for a given alloy give similar activation and adsorption energies.

    DOI: 10.15099/00006479

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  • Addition of Some Transition Elements and their Effects on the Electrochemical Properties of MgNi

    Ma Tiejun, Hatano Yuji, Abe Takayuki, Watanabe Kuniaki

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   23   43 - 52   2003

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    In this study, some transition elements, Ag, Co, Pd, Re, Ru and Ti, at 6 and 10mol% compositions, were selected to ball mill with Mg2Ni and Ni, and the effects of transition elements on the electrochemical properties of amorphous MgNi were investigated. Three distinct effects on the electrochemical properties of MgNi were found: Ti and Pd dissolved into the bulk of MgNi during ball milling and the degradation of discharge capacity was decreased by addition of Ti and Pd. Ag and Co also dissolved in the MgNi powder, but there was no appreciable influence on the electrochemical behavior of MgNi. Re and Ru neither dissolved into MgNi nor improved the properties of MgNi.

    DOI: 10.15099/00006480

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  • 金属膜中の水素の超透過とその応用への可能性

    波多野 雄治

    まてりあ : 日本金属学会会報   41 ( 9 )   652 - 652   2002.9

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  • Effects of Pd Addition on the Electrochemical Properties of MgNi

    Ma Tiejun, Hatano Yuji, Abe Takayuki, Watanabe Kuniaki

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   22   35 - 46   2002

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    DOI: 10.15099/00006472

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  • Correlation between microstructure of tungsten and solid state reaction rate with amorphous carbon film

    Takamori Miyuki, Hatano Yuji, Watanabe Kuniaki

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   22   47 - 53   2002

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    The correlation between microstructure of tungsten and rate of carbide formation was investigated at 800 ℃ by examining the reaction between amorphous carbon films and tungsten specimens fabricated under different conditions. The carbide formed was W2C, and no WC was observed. The growth rate of W2C showed no significant dependence on the size and shape of crystal grains. A clear correlation, however, was observed between the hardness of tungsten and the rate of W2C growth, and the reaction rate decreased with hardness.

    DOI: 10.15099/00006473

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  • Construction and Performance Test of Apparatus for Permeation Experiments with Controlled Surfaces

    Hatano Yuji, Nomura Mamoru, Watanabe Kuniaki, Livshits Alexander I., Busnyuk Andrei O., Nakamura Yukio, Ohyabu Nobuyoshi

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   21   13 - 26   2001

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    A new apparatus was constructed to examine gas-, atom- and Plasma-driven permeation of hydrogen isotopes through group VA metal membranes with precisely controlled surface states. Absorption and desorption experiments are also possible. The new apparatus consists of two vacuum chambers, an upstream chamber and a downstream chamber, separated by a specimen membrane. Both chambers are evacuated by turbo-molecular pumps and sputter-ion pumps. The upstream chamber is equipped with Ta filaments serving as atomizers in atom-driven permeation experiments and cathodes in plasma-driven permeation experiments. The specimen membrane is formed into a tubular and electrically isolated from the chamber. Hence, ohmic heating of the membrane is possible, and this feature of the membrane is suitable for surface cleaning by high-temperature heating and impurity doping for the control of surface chemical composition through surface segregation. Both chambers were evacuated to 1x10-7 Pa after baking. The main component of residual gas was H2, and the partial pressures of impurity gases other than H2 were ca. 1x10-8 Pa. Gas- and atom-driven permeation experiments were successfully carried out with hydrogen gas for Nb membrane activated by heating in vacuum at 1173K. Superpermeation was observed in the atom-driven permeation experiments. Absorption experiments with a clean surface were also carried out. The surface was, however, cleaned only partially, because the temperature distribution was not uniform during high-temperature heating. Nevertheless, surface cleanliness was retained during absorption experiments under the present vacuum conditions. A new membrane assembly that will enable a uniform temperature distribution is now under construction.

    DOI: 10.15099/00006462

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  • Kinetic Analysis of Reactions between Hydrogen-containing Carbon Film and Substrate Metals(Be,Mo,W)

    Ashida Kan, Hatano Yuji, Watanabe Kuniaki

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   20   43 - 52   2000

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    Kinetic analyses were performed for solid-state reactions between a hydrogen-containing carbon film and substrate metals to form metallic carbide of Me2C (Me=Be, Mo, W). Isothermal and non-isothermal reaction curves could be explained by a random nucleation and two-dimentional crystal growth model. The kinetic equation can be approximated well by -ln(1-x)= kappt2, where x is the extent of reaction and kapp the apparent rate constant. The temperature dependence of the rate constants are given as kapp(Be)=3.10 exp(-109.[kJ/mol]/RT) [1/sec2], kapp(Mo)=231. exp(-161.[kJ/mol]/RT), kapp(W) =516. exp(-183.[kJ/mol]/RT), for Be-C, Mo-C and W-C systems, respectively, where the apparent activation energy is considered to be the sum of those for nucleation and diffusion. Linear relations were found between the apparent activation energy and the melting point of substrate metals as well as the bond strength of Me-C (Me=Be, Mo, W).

    DOI: 10.15099/00006458

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  • Measurement of Diffusion Coefficient of Sulfur Adsorbed on Ni(111) Surface.

    TSUKAWAKI Satoshi, HATANO Yuji, HASHIZUME Kenichi, SUGISAKI Masayasu

    Hyomen Kagaku   21 ( 2 )   102 - 106   2000

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    The diffusion coefficient of sulfur in the p(1&times;1) phase of a S/Ni(111) system has been measured in a temperature region from 486 K to 577 K by micro-probe Auger electron spectroscopy, in which the initial coverage profile of sulfur is prepared by depositing sulfur molecules in a localized circular area. The diffusion coefficient measured is in agreement with that reported in our previous paper, in which H2S gas was used as a sulfur source and the initial coverage profile of sulfur was prepared by argon ion sputtering. It has been concluded that surface roughness of nickel, supposedly brought about by argon ion sputtering used in our previous work, does not exert appreciable influence upon the diffusion behavior of sulfur.

    DOI: 10.1380/jsssj.21.102

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  • Solid State Reaction between Tungsten and Amorphous Carbon Film

    Hatano Yuji, Watanabe Kuniaki, Takamori Miyuki, Matsuda Kenji, Ikeno Susumu

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   20   31 - 41   2000

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    Solid state reaction between tungsten and carbon film was examined at 1073K. Carbon film was deposited onto tungsten sheet by vacuum evaporation at room temperature and analyzed by means of X-ray photoelectron spectroscopy. Carbon and tungsten beneath the carbon film were detected, whereas only trace amount of impurities such as oxygen were present. The binding energy of W 4f electrons indicated that tungsten was in a metallic state at the interface. These observations suggested that no impurity layer existed at the interface. Analysis using transmission electron microscopy showed that carbon was in an amorphous state. The specimen was heated at 1073 K in vacuum, and change in crystal structure was analyzed by means of X-ray diffraction. The peak of W2C appeared after an induction period for ca. 1 min, although W2C is not thermodynamically stable at 1073 K. The peak intensity ratio of W2C to metallic tungsten increased in proportion to the square root of time to take the maximum value at 50 min and then decreased with elapse of time. No peak of WC was observed. These results indicate that the nucleation rate of W2C was much faster than that of WC at 1073 K. The decomposition of W2C was ascribed to the reaction between carbon in W2C and H2O in residual gas.

    DOI: 10.15099/00006457

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  • Redistribution of Hydrogen in Fuel Cladding and Its Influence on Mechanical Properties of Cladding under Dry Storage Conditions

    Hashizume Kenichi, Hatano Yuji, Seki Rumi, Sugisaki Masayasu

    Engineering sciences reports, Kyushu University(Kyushu Daigaku Sogorikogaku Kenkyuka hokoku)   21 ( 3 )   281 - 288   1999.12

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    Hydrogen redistribution process in Zircaloy cladding of spent fuels was evaluated under the thermal condition of dry storage. Charpy impact test was carried out at temperatures from room temperature to 523 K on two kinds of Zircaloy specimens including 400 wt-ppm of hydrogen:One is the specimen in which hydrogen (hydride)is uniformly distributed and the other in which hydrogen is nonuniformly distributed. These tests show that the impact strength of the specimen with non-uniform hydrogen distribution is larger than that of the specimen with uniform distribution. On the basis of these results, the possibility that the impact strength of the cladding including large amount of hydrogen is degraded during the dry storage was suggested;e.g. in the case of the cladding including 400 ppm hydrogen, the uniform distribution of hydrogen is realized when the cladding is heated up to 773 K.

    DOI: 10.15017/16566

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  • Charge/Discharge Characteristics of Amorphous MgNi Electrode and Influence of Heat Treatment in Argon

    Hatano Yuji, Tachikawa Tomoyuki, Mu Daobin, Abe Takayuki, Watanabe Kuniaki, Morozumi Shotaro

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   19   21 - 31   1999

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    An amorphous MgNi alloy was prepared by mechanical alloying, and its charge/discharge characteristics were examined in a 6 M KOH solution at room temperature. The discharge capacity of the alloy was large than that of conventional AB5 alloys in the initial stage of charge/discharge cycles, but it decreased promptly with an increase in cycle number. The cell voltage in the charge process increased with the cycles. Degradation in the discharge capacity also occurred owing to immersion in the KOH solution under an open circuit potential. Since the formation of a Mg(OH)2 layer was observed by X-ray diffraction analysis, the degradation of the electrode was ascribed to the increase in overvoltage in the charge process by the Mg(OH)2 layer formed on the alloy surface through the chemical reaction between the alloy and the KOH solution. The effect of heat treatment on the charge/discharge characteristics was also examined. The discharge capacity of amorphous MgNi and MgNi0.6Co0.4 alloys decreased in the initial stage of the cycle test by heating in argon owing to recrystallization. The degradation rates of these alloys, however, were also reduced by heating at 300℃, and the heated alloys showed large discharge capacity compared with unheated ones after 10 cycles. These results were attributed to the increase in surface area of the alloys brought about by selective evaporation of magnesium.

    DOI: 10.15099/00006449

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  • Influence of Surface Oxide Film on Hydrogen Permeation through Vanadium Membrane

    HAYAKAWA Ryo, HATANO Yuji, WATANABE Kuniaki

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   19   57 - 64   1999

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    Temperature dependence of hydrogen permeation rate was examined for a vanadium membrane oxidized at room temperature by exposure to air. Pressure dependence of the permeation rate was also examined to determine the rate-controlling process of the permeation. The change in the chemical state of surface oxide by heating in vacuum was analyzed by X-ray photoelectron spectroscopy (XPS). The permeation rate was small below 300℃ and significantly increased in the temperature range from 300 to 400℃. The rate-controlling process of the permeation was determined as surface reaction because the permeation rate increased in proportion to the upstream pressure. A surface oxide film consisting of V2O3 and VO was formed on the vanadium surface. At almost the same temperature at which the permeation rate increased, V2O3 and VO were reduced to metal. Hence, the increase in permeation rate at a temperature above 300℃ was ascribed to the reduction of V2O3 and VO to metal. The reduction of V2O3 to metal took place via VO.

    DOI: 10.15099/00006452

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  • Performance Test of Tritium Experimental System for 100Ci/run(2) : Hydrogen Isotope Separation Unit

    HARA Masanori, MATSUYAMA Masao, ASHIDA Kan, HATANO Yuji, KAGO Munekazu, WATANABE Kuniaki

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   19   1 - 7   1999

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    DOI: 10.15099/00006447

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  • Influence of Pre-oxidation on Charge/Discharge Characteristics of Sintered Mg2Ni

    HATANO Y., KOBAYASHI Koji, MORI Katsunori, WATANABE Kuniaki, MOROZUMI Shotaro

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   18 ( 18 )   105 - 116   1998

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    The influence of pre-oxidation on charge/discharge characteristics of sintered Mg2Ni electrodes was examined with an open electrochemical cell. Mg2Ni powder was first oxidized slightly in air at 473 K for 5-360 min and then sintered in argon atmosphere at 823 K. The cyclic stability of discharge capacity was improved markedly by pre-oxidation. Maximum cycle life was obtained using 20 min pre-oxidation. The mechanism by which pre-oxidation influences cyclic stability was examined via density measurement and surface analysis. The sintering rate had a maximum value for 20 min pre-oxidation. An MgO layer was formed on the surface of Mg2Ni during sintering and growth rate of the MgO layer decreased with pre-oxidation. Improvement of cyclic stability with pre-oxidation was attributed to the firm aggregation between Mg2Ni powder particles due to reduction in the thickness of MgO layer.

    DOI: 10.15099/00006446

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  • Performance Test of Tritium Experimental System for 100Ci/run (1) : Detritiation Device for Exhaust Gases

    HARA Masanori, MATSUYAMA Masao, ASHIDA Kan, HATANO Yuji, SHU W. M., WATANABE Kuniaki

    Annual report of Hydrogen Isotope Research Center,Toyama University,Japan   18 ( 18 )   33 - 41   1998

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    A tritium experimental system for 100Ci/run was established at the Hydrogen Isotope Research Center, Toyama University. This system consisted of two distinct experimental chambers for tritium experiments and backup components such as tritium storage-supply, gas purification, isotope separation and exhaust-gas detritiation. To confirm the reliability of the detritiation device, which is an important factor of the system, the basic performance of the detritiation device was assessed using a small amount of tritium. Two different methods were examined: one is based on conventional oxidation-adsorption (wet method) and the other gettering (dry method). The wet method is advantageous if exhaust gases include large amounts of impurities such as oxygen, water, hydrocarbon and so on. The dry method is applicable for processing exhaust gases which mainly include elemental tritium with a small amount of impurities. The wet method showed excellent performance for tritium removal from exhaust gases with impurity oxygen, the initial tritium concentration was reduced below 1/10 within 20 min. Similar performance was also obtained by dry method. In addition, the absorption bed loaded with molecular sieves could be regenerated by applying the dry method. Accordingly, it was concluded that the performance of the detritiation device satisfies requirement for performing tritium experiments.

    DOI: 10.15099/00006440

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  • Role of Intermetallic Precipitates in Hydrogen Uptake of Zircaloy-2

    HATANO Yuji, ISOBE Kanetsugu, HITAKA Ryuji, SUGISAKI Masayasu

    Journal of Nuclear Science and Technology   33 ( 12 )   p.944 - 949   1996.12

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    The hydrogen uptake behavior of two types of Zircaloy-2 specimens containing either fine intermetallic precipitates or coarse ones was studied at 623-723K in the pre-transition period of oxidation to clarify the role of the precipitates in the hydrogen transport through the oxide film. In the former case, the amount of hydrogen taken up was small and did not show the oxidation temperature dependence. In the latter case, the amount of hydrogen taken up was large and dependent markedly upon the oxidation temperature; it increased with decreasing oxidation temperature. These results were successfully explained with the model that the intermetallic precipitates remaining in a metallic state in the oxide film act as the fast transport route of hydrogen.

    DOI: 10.3327/jnst.33.944

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  • 原子力に携わる者として

    波多野 雄治

    日本原子力学会誌 = Journal of the Atomic Energy Society of Japan   37 ( 3 )   211 - 211   1995.3

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  • Observation of Hydrogen Distribution in Zircaloy-2 by Tritium Microautoradiography

    16 ( 4 )   369 - 373   1995.3

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    Zircaloy-2 specimens were oxidized in steam and charged with tritium by the cathodic charging method. The distribution of tritium in the oxide film and alloy was observed by microautoradiography. Although tritium was absorbed by the alloy through the oxide film, the tritium concentration in the oxide film and alloy layer beneath it was lower than the concentration in the inner region of alloy. In the oxide film and alloy layer beneath it, tritum segregated in intermetallic precipitates. In the inner region of alloy, tritium segregated in the intermetallic precipitates and the grain boundary of zirconium matrix.

    DOI: 10.15017/17352

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  • Influence of Oxide Film on Dissolution Rate of Gaseous Tritium into SUS-316 Stainless Steel

    14 ( 1 )   9 - 15   1992.6

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    Characterization of surface impurities on SUS-316 stainless steel was performed with an Auger electron spectroscopy, the surface of which was prepared in two ways. Oxygen impurity was not observed on the surface annealed at 1273K in vacuum but segregation of appreciable amount of sulfur was observed. A duplex oxide layer of chromium and iron oxides was observed on the surface exposed to air at room temperature after vacuum annealing. Summarizing these experimental results and the data of our previous experiment on measurement of dissolution rate of gaseous tritium into the present stainless steel, the barrier effect of oxide film on the dissolution rate of gaseous tritium into stainless steel was discussed. The disappearance of barrier effect of the present duplex oxide film under a reducing conditions was ascribed to the reconstruction of oxide film resulted from the reduction of top layer of iron oxide.

    DOI: 10.15017/17258

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  • Modification of Surface Impurities on Nickel Membrane Exposed to RF-Discharged Hydrogen Plasma and Its Influence on the Plasma-Driven Permeation

    Hatano yuji, Kumano Hideki, Sugisaki Masayasu

    13 ( 2 )   163 - 169   1991.9

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    Modification of surface impurities on nickel membrane exposed to rf-discharged hydrogen plasma at room temperature and 500℃ was examined with Auger electron spectroscopy. The main impurities were oxygen, carbon, and sulfur. Their concentration was reduced with exposure to the hydrogen plasma. At room temperature, sulfur was completely removed but carbon formed nickel carbide. At 500℃, sulfur and carbon were completely removed. At every temperature, oxygen was not completely removed on the contrary oxygen and silicon were deposited on the surface in case of exposure for long time, which was ascribed to the sputtering of pyrex glass. These results were related to our previous experiment of the plasma-driven permeation of hydrogen through nickel and the influence of the surface impurities on the transient behavior of the plasma-driven permeation was discussed.

    DOI: 10.15017/17226

    CiNii Books

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  • Measurement of Dissociation Rate of RF-Discharged Deuterium Plasma and Rate-Determining Processes of Plasma-Driven Permeation Through Nickel Membrane

    12 ( 2 )   169 - 174   1990.9

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    The transient permeation flux of deuterium through nickel membrane was measured in a temperature region from 373K to 773K by use of the RF-discharged deuterium plasma. The experimental results were analysed by the diffusion-controlled model and it was concluded that the permeation rate of the plasma driven permeation under the present experimental conditions was controlled by the diffusion process at temperatures below 480K and by the surface recombination process at temperatures above 480K. The significantly enhanced permeation flux observed in our study was ascribed to the fact that neutral deuterium atoms impinging onto the specimen surface have a larger dissolution rate than that of the deuterium molecules by the order of 107.

    DOI: 10.15017/17190

    CiNii Books

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  • Construction of Apparatus for Plasma-Driven Permeation Experiment and Permeation Behavior of Deuterium Plasma Through Ni Membrane

    11 ( 3 )   279 - 285   1989.12

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    An apparatus for plasma-driven permeation experiment has been constructed, in which the plasma is produced by the RF-dischange. The permeation behavior of deuterium plasma through Ni membrane has been examined and the significantly enhanced permeation flux has been confirmed. Following mechanisms have been proposed for the plasma-driven permeation of deuteriuln through Ni. (i) Neutral deuterium atoms make a predominant contribution to the permeation enhancement. (ii) Electrons also take part in the permeation enhancement by inducing the dissociation of deuterium molecules adsorbed on the Ni surface. The experimental conditions under which the permeation spike occurs have been examined and an origin of the permeation spike has ascribed to the enhancement of recombination on the up-stream surface which is brought about by the dischargecleaning of the Ni surface during the permeation experiment.

    DOI: 10.15017/17155

    CiNii Books

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Presentations

  • Global Distribution of Tritium in JET with the ITER-Like Wall Invited

    Y.Hatano, S. E. Lee, S. Masuzaki, Y. Oya, T. Otsuka, N. Ashikawa, Y. Torikai, N. Asakura, H. Nakamura, K. Isobe, H. Kurotaki, D. Hamaguchi, T. Hayashi, J. Likoneng, S. Koivuranta, A. Widdowson, S. Jachmich, M. Rubel, JET contributors

    The 24th International Conference on Plasma Surface Interaction in Fusion Devices  2021.1 

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    Event date: 2021.1

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • Isotope Effects on Hydrogen Retention, Trapping and Permeation in Copper-Based Materials

    Yuji Hatano, Xiang Xin, Peng Shi, Takeshi Toyama, Naoki Ebisawa, Sosuke Kondo, Tatsuya Hinoki

    The 19th International Conference on Fusion Reactor Materials  2019.10 

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    Event date: 2019.10 - 2019.11

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • Overview of Japan-US Project PHENIX: Technological Assessment of He-Cooled Divertor with Tungsten for DEMO Reactors Invited

    Yuji Hatano, Daniel Clark, Yoshio Ueda, Yutai Katoh, Takehiko Yokomine, Minami Yoda, Adrian S. Sabau, Tatsuya Hinoki, Akira Hasegawa, Lauren M. Garrison, J. Wilna Geringer, Yasuhisa Oya, Masashi Shimada, Dean Buchenauer, Takeo Muroga

    The 14th International Symposium on Fusion Nuclear Technology  2019.9 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (keynote)  

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  • Hydrogen Isotope Retention and Transport in Neutron-Irradiated Tungsten Invited

    Yuji Hatano

    TRANSAT Tritium School  2019.3 

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    Event date: 2019.3

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • Fuel retention and transport in tungsten: neutron irradiation, seeded impurities, alloying and isotope effects Invited

    Y. Hatano, V. Kh. Alimov, K. Schmid, R. Doerner, Y. Ueda

    The 22nd International Conference on Plasma Surface Interactions in Controlled Fusion Devices  2016.5 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Oral presentation (keynote)  

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  • Deuterium Trapping at Defects Created with Neutron- and Ion-Irradiation in Tungsten

    Y. Hatano1, M. Shimada, Y. Oya, V. Kh. Alimov, M. Hara, J. Shi, M. Kobayashi, T. Oda, G. Cao, K. Okuno, T. Tanaka, K. Sugiyama, J. Roth, B. Tyburska-Püschel, J. Dorner, N. Yoshida, N. Futagami, H. Watanabe, M. Sokolov, Y. Katoh

    The 24th IAEA Fusion Energy Conference 

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    Event date: 2013.10

    Language:English   Presentation type:Oral presentation (general)  

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  • Trapping of hydrogen isotopes by radiation defects formed in W by neutron and ion irradiations

    Y. Hatano, M. Shimada, V.Kh. Alimov, J. Shi, M. Hara, Y. Oya, M. Kobayashi, K. Okuno, T. Oda, G. Cao, N. Yoshida, N. Futagami, K. Sugiyama, J. Roth, B. Tyburska-Püschel, J. Dorner, I. Takagi, M. Hatakeyama, H. Kurishita, M. Sokolov

    The 20th International Conference on Plasma Surface Interactions in Controlled Fusion Devices 

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    Event date: 2012.5

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • Tritium detection: challenges and photonic approaches

    Yuji Hatano

    The13th International Confernece on Photonics and Applications  2024.10 

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    Event date: 2024.10

    Language:English   Presentation type:Oral presentation (general)  

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  • 中性子照射タングステン材料の高温酸化挙動および放射化酸化物放出挙動

    松本 あずさ, 波多野 雄治, 大塚 哲平, 小林 真, 大矢 恭久, 島田 雅

    日本原子力学会 2024年秋の大会 

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    Event date: 2024.9

    Presentation type:Oral presentation (general)  

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  • タングステン及びタングステン・レニウム合金の高温酸化機構に関する研究

    小林 真, 大塚 哲平, 大矢 恭久, 能登 裕之, 島田 雅, 波多野 雄治

    日本原子力学会 2024年秋の大会 

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    Event date: 2024.9

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  • Effects of irradiation temperature on microstructure and hardness in W-0.3Cr alloy after irradiation with 6.4 MeV Fe ions

    Jing Wang, Yifan Zhang, Takeshi Toyama, Kiyohiro Yabuuchi, Yuji Hatano

    15th China-Japan Symposium on Materials for Advanced Energy Systems and Fission and Fusion Engineering 

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    Event date: 2024.9

    Presentation type:Oral presentation (general)  

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  • Tritium permeation and oxidation behavior of Inconel 600 under high temperature, high pressure water environment

    Azusa Matsumoto, Yuji Hatano

    15th China Japan Symposium on Materials for Advanced Energy Systems and Fission and Fusion Engineering 

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    Event date: 2024.9

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  • Influence of molybdenum addition on He bubble formation in tungsten

    Kotaro Fukuda, Yuji Hatano, Yajima Miyuki, Naoaki Yoshida, Daisuke Nagata

    15th China Japan Symposium on Materials for Advanced Energy Systems and Fission and Fusion Engineering 

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    Event date: 2024.9

    Presentation type:Poster presentation  

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  • Effects of hydrogen isotopes on stability of vacancy-type defects in tungsten

    Eijiro Taguchi, Yuji Hatano, Toshiharu Takahashi, Takeshi Toyama

    15th China Japan Symposium on Materials for Advanced Energy Systems and Fission and Fusion Engineering 

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    Event date: 2024.9

    Presentation type:Oral presentation (general)  

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  • Interactions between Hydrogen Isotope and Vacancy-type Defects in Metals

    Yuji Hatano

    15th China Japan Symposium on Materials for Advanced Energy Systems and Fission and Fusion Engineering  2024.9 

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    Event date: 2024.9

    Presentation type:Oral presentation (keynote)  

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  • 電子線照射されたタングステン中の原子空孔形成に対するレニウム添加効果

    外山 健, Zhang Zhaokuan, 井上耕治, 永井康介, 木野村淳, 波多野雄治

    第61回 アイソトープ・放射線研究発表会 

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    Event date: 2024.7

    Presentation type:Oral presentation (general)  

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  • タングステン中の空孔型⽋陥の安定性に及ぼす⽔素同位体の影響

    田口瑛爾朗, 波多野雄治, 外山健, 高橋俊晴

    第15回核融合エネルギー連合講演会 

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    Event date: 2024.6

    Presentation type:Poster presentation  

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  • ヘリウム照射したタングステン合⾦中のバブル形成挙動に与える添加元素の影響

    森俊也, Joshua Ashley, 波多野雄治, 大矢泰久, 宮本光貴

    第15回核融合エネルギー連合講演会 

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    Event date: 2024.6

    Presentation type:Poster presentation  

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  • タングステン中のHeバブル形成に及ぼすモリブデン添加の影

    福田耕太郎, 波多野雄治, 矢嶋美幸, 吉田直亮, 永田大介

    第15回核融合エネルギー連合講演会 

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    Event date: 2024.6

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  • ODS FeCrAl合金が形成するα-Al2O3被膜の密着強度と液体金属浸漬の影響に関する研究

    北村 嘉規, 近藤 正聡, 畑山 奨, 大野 直子, 菱沼 良光, 坂本 寛, 波多野 雄治, Pint Bruce, Jun Jheon, Romedenne Marie

    日本原子力学会 2024年春の年会 

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    Event date: 2024.3

    Presentation type:Oral presentation (general)  

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  • 高温高圧水/水蒸気雰囲気下におけるインコネル600の酸化挙動およびトリチウム透過への影響

    松本あずさ, 波多野雄治

    日本原子力学会 2024年春の年会 

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    Event date: 2024.3

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  • トリチウムトレーサー法を用いた金属材料中の非金属介在物による水素捕捉の研究

    波多野 雄治, 西村 瑞規

    日本原子力学会 2024年春の年会 

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    Event date: 2024.3

    Presentation type:Oral presentation (general)  

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  • 放射線規制及び災害に対応可能な実践力を有する放射線取扱主任者育成の取組み

    大矢 恭久, 波多野 雄治, 原 正憲, 横山 明彦, 山田 記大, 立松 憲次郎, 片山 一成, 納冨 昭弘, 城間 吉貴, 濱田 栄作

    日本原子力学会 2024年春の年会 

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    Event date: 2024.3

    Presentation type:Oral presentation (general)  

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  • タングステンからのHeの放出速度に及ぼすモリブデンの影響

    福田 耕太郎, 波多野 雄治

    日本原子力学会 2024年春の年会 

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    Event date: 2024.3

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  • ⾦属から⾼温⾼圧⽔中へ流⼊したトリチウムのインコネル600を介した透過

    松本あずさ, 波多野雄治

    プラズマ・核融合学会 第40回年会 

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    Event date: 2023.11

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  • イオンビーム解析装置を⽤いたQUESTプラズマ対向壁材料の⽔素同位体吸蔵評価

    矢嶋美幸, 吉田直亮, 花田和明, 増崎貴, 大宅諒, 波多野雄治, 時谷正行

    プラズマ・核融合学会 第40回年会 

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    Event date: 2023.11

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  • 材料中の損傷と燃料粒子の相互作用とダイナミクス

    波多野雄治

    プラズマ・核融合学会 第40回年会 

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    Event date: 2023.11

    Presentation type:Oral presentation (general)  

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  • WおよびW-Reにおける重水滞留に及ぼすHe照射効果

    加用敦也, 星野柚香, 三福寺旭, 周啓来, 波多野雄治, 大矢恭久

    プラズマ・核融合学会 第40回年会 

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    Event date: 2023.11

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  • JET ILWで使⽤されたタングステンバルクダイバータタイルポロイダルギャップに蓄積された共堆積層の特性解析

    時谷政行, 宮本光貴, 増崎貴, 波多野雄治, Sun Eui Lee, 大矢恭久, 黒滝宏紀, 朝倉伸幸, 中村博文, 林 巧, Marek Rubel, Anna Widdowson, Jari Likonen

    プラズマ・核融合学会 第40回年会 

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    Event date: 2023.11

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  • ステンレス鋼への炭素ドーピングによる⽔素透過の抑制

    信太 祐二, 波多野雄治, 佐々木浩一

    プラズマ・核融合学会 第40回年会 

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    Event date: 2023.11

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  • Evaluation of Hydrogen Embrittlement and SCC Resistance of ODS-Cu, Cu-Cr-Zr, and Cu-Cr Alloys by SSRT Method

    Masahiko Hatakeyama, Yuto Asai, Mizuki Nisimura, Yuji Hatano, Daichi Nakato, Satoshi Sunada, Koichi Sato

    21th International Conference on Fusion Reactor Materials 

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    Event date: 2023.10

    Presentation type:Poster presentation  

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  • In-situ He bubble formation in W and W-Mo alloys

    Joshua Ashley, Mitsutaka Miyamoto, Yuji Hatano, Kiyohiro Yabuuchi, Takeshi Toyama, Masayuki Tokitani, Enrique Jimenez-Melero

    21th International Conference on Fusion Reactor Materials 

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    Event date: 2023.10

    Presentation type:Poster presentation  

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  • Irradiation Responses of Selected Binary Tungsten Alloys

    Yuji Hatano

    21th International Conference on Fusion Reactor Materials 

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    Event date: 2023.10

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  • Co-deposited layers on the poloidal gap surface of bulk tungsten divertor tiles in JET ITER-like wall: Directional effects and nanostructures

    Masayuki Tokitani, Mitsutaka Miyamoto, Suguru Masuzaki, Yuji Hatano, Sun Eui Lee, Yasuhisa Oya, Hironori Kurotaki, Nobuyuki Asakura, Hirofumi Nakamura, Takumi Hayashi, Marek Rubel, Anna Widdowson, Jari Likonen, JET Contributors

    21th International Conference on Fusion Reactor Materials 

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    Event date: 2023.10

    Presentation type:Poster presentation  

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  • Tritium permeation through Inconel 600 under high temperature, high pressure water environment: Influence of oxidation of coexisting materials

    Azusa Matsumoto, Yuji Hatano

    15th International Symposium on Fusion Nuclear Technology 

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    Event date: 2023.9

    Presentation type:Poster presentation  

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  • Overview of Japan-US Collaboration FRONTEIR Project —Fusion Research Oriented to Neutron Irradiation Effects and Tritium Behavior at Material Interfaces—

    Yuji Hatano

    15th International Symposium on Fusion Nuclear Technology 

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    Event date: 2023.9

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  • LHD重水素実験における第一壁・ダイバータ板へのトリチウム蓄積研究

    増崎 貴, 矢嶋 美幸, 田中 将裕, 本島 厳, 森崎 友宏, 時谷 政行, 大塚 哲平, 吉田 直亮, 大矢 恭久, 波多野 雄治

    日本原子力学会 2023年秋の大会 

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    Event date: 2023.9

    Presentation type:Oral presentation (general)  

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  • JET-ITER like wall実験で使用された第一壁およびダイバータタイルのギャップへのトリチウム蓄積

    波多野 雄治, Lee Suneui, 増崎 貴, 時谷 政行, 大矢 恭久, 芦川 直子, 中村 博文, 林 巧, Widdowson Anna, Rubel Marek

    日本原子力学会 2023年秋の大会 

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    Event date: 2023.9

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  • 一次系内に共存する金属材料の酸化が高温高圧水環境下でのインコネル600中のトリチウム透過に及ぼす影響

    松本 あずさ, 波多野 雄治

    一次系内に共存する金属材料の酸化が高温高圧水環境下でのインコネル600中のトリチウム透過に及ぼす影響 

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    Event date: 2023.9

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  • Enhanced vacancy annihilation in irradiated W by addition of Re and Cr − What is the mechanism? − Invited

    Y. Hatano, J. Wang, T. Toyama

    International Workshop on Models and Data for Plasma-Material Interaction in Fusion Devices  2023.5 

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    Event date: 2023.5

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • Tritium Research Activities in Hydrogen Isotope Research Center, University of Toyama Invited

    Y. Hatano, M. Hara, M. Matsuyama

    Symposium about Tritium Science and Technology  2023.5 

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    Event date: 2023.5

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • タングステン中の水素同位体の蓄積・拡散における照射効果とその抑制 Invited

    波多野雄治

    日本金属学会シンポジウム―タングステン材料科学-  2022.12 

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    Event date: 2022.12

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Impact of irradiation on fuel retention in fusion reactor materials

    Yuji Hatano

    13th International Conference Tritium Science and Technology 

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    Event date: 2022.10

    Presentation type:Oral presentation (general)  

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  • Tritium in chamber materials, trapping and release (plasma chamber in DEMO, irradiation damage and tritium trapping) Invited

    Yuji Hatano

    IAEA Technical Meeting on Plasma Physics and Technology Aspects of the Tritium Fuel Cycle for Fusion Energy 

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    Event date: 2022.10

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • 水素同位体の基礎 物性と応用 Invited

    波多野雄治

    軽金属学会第142回春期大会 

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    Event date: 2022.5

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  • Fuel retention in and removal from neutron irradiated tungsten Invited

    Y. Hatano, M. Yajima, V. Kh. Alimov, T. Toyama, Y. Nobuta, Y. Oya, T. Kuwabara, K. Suzuki, T. Schwarz Selinger, A. V. Spitsyn, A. Matsumoto, N. Ohno

    18th International Conference on Plasma-Facing Materials and Components for Fusion Applications 

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    Event date: 2021.5

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  • Retention and Transport of Tritium and Hydrogen Isotopes in Fusion Reactor Materials

    Yuji Hatano

    2019.4 

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    Event date: 2019.4

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  • Hydrogen Isotope Retention and Permeation in Cu Alloys and Isotope Effects

    Yuji Hatano, Peng Shi, Xiang Xin

    The 12th Japan-China Symposium on Materials for Advanced Energy Systems and Fission & Fusion Engineering  2018.9 

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • Research Progress on Hydrogen Isotope Behaviors in Neutron-Irradiated Tungsten Invited

    Yuji Hatano, Yasuhisa Oya, Takeshi Toyama, Miyuki Yajima, Tatsuya Kuwabara, Noriyasu Ohno

    Plasma Conference 2017  2017.11 

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

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  • Effects of W Deposition on Surface Modification and Sputtering Erosion of Fe under Exposure to Deuterium Plasma

    The 13th China-Japan Symposium on Materials for Advanced Energy Systems and Fission & Fusion Engineering  2016.9 

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    Event date: 2016.9

    Language:English   Presentation type:Oral presentation (keynote)  

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  • Overview of Recent Japanese Activities on Measurement of Tritium in Solid Materials

    Yuji Hatano, Kazuya Yumizuru, Hiroko Yoshida-Ouchi, Teppei Otsuka, Makoto Oyaidzu, Kanetsugu Isobe, Takumi Hayashi

    The 1st Asia-Pacific Symposium on Tritium Science  2015.11 

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    Event date: 2015.11

    Language:English   Presentation type:Oral presentation (keynote)  

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  • Wet-Chemical Method for Fabrication of Tritium Permeation Barrier Coatings Invited

    Yuji Hatano, Kun Zhang

    The 13th International Workshop on Plasma-Facing Materials and Components for Fusion Applications  2011.5 

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    Event date: 2011.5

    Language:English   Presentation type:Oral presentation (invited, special)  

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  • トリチウムを利用した鉄鋼中の水素捕捉に関する研究

    西村瑞規, 波多野雄治

    令和5年度日本鉄鋼協会北陸信越支部・日本金属学会北陸信越支部連合講演会  2023.12 

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Industrial property rights

  • 金属表面への被膜生成方法

    波多野 雄治, 張 鯤, 孔 祥か

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    Applicant:富山大学

    Application no:特願2009-166165 

    Announcement no:特開2011-021220 

    Patent/Registration no:特許第5569896号 

    Rights holder:富山大学

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Awards

  • Top Reviewer Awards, Nuclear Fusion

    2022.12   IOP Publishing  

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  • Technical Development Award

    2020.12   The Japan Society of Plasma Science and Nuclear Fusion Research  

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  • Best Reviewer Award, Journal of Nuclear Materials

    2014.12   Elsevier  

    Yuji Hatano

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  • Award for Young Researcher, Atomic Energy Society of Japan

    1999  

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  • 日本原子力学会奨励賞

    1999  

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    Country:Japan

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Research Projects

  • Control of vacancy concentration and hydrogen isotope retention in neutron-irradiated tungsten alloys for fusion applications

    Grant number:18H03688  2018.4 - 2022.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)  Grant-in-Aid for Scientific Research (A)

    Hatano Yuji

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    Grant amount:\44330000 ( Direct Cost: \34100000 、 Indirect Cost:\10230000 )

    Future fusion reactors will use deuterium (D) and tritium (T) as fuel and tungsten (W) as a wall material of reactor core. Due to their small sizes, D and T atoms are dissolved into W crystal easily. During reactor operation, W will be irradiated with high energy neutrons produced by fusion reactions, and fine cavities (vacancy and vacancy clusters) are generated in W crystal. These cavities strongly trap D and T atoms and raise T retention in W markedly. Such retention of a large amount of T increases a risk of uncontrolled T release to the environment under accidental conditions. In this study, we systematically investigated irradiation responses of W-Re, -Cr, -Ta and -Mo binary alloys. We found that Re and Cr strongly enhance the annihilation of cavities under irradiation and reduce hydrogen isotope retention in orders of magnitude. The mechanisms underlying such enhanced cavity annihilation was clarified with help of first principle calculation results in literatures.

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  • Measurement of Tritium Distributions on Divertor Tiles used in JET-ITER Like Wall Experiments

    Grant number:26289353  2014.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    Hatano Yuji

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    Grant amount:\13000000 ( Direct Cost: \10000000 、 Indirect Cost:\3000000 )

    ITER will use Be as a main chamber wall material and W as a divertor material. To examine the performances of these materials in tokamak environment, JET in EU has performed ITER-Like Wall (ILW) experimental campaigns with Be main chamber tiles and W-coated CFC divertor tiles. In this study, tritium (T) distributions on these tiles were examined using imaging plate (IP) technique and beta-ray induced X-ray spectrometry. Two retention mechanisms were found: (1) co-deposition with Be and other impurities, and (2) implantation into material bulk. T concentrations in Be deposition layers were lower than those in carbon deposition layers formed in previous campaigns with carbon tiles. Far less co-deposition of T on the sides of tiles was observed for ILW tiles compared with carbon tiles. Significantly reduced T retention was expected with Be and W walls in comparison with C walls. Technique to measure T retention in an individual dust particle using IP was also developed.

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  • Development of new measurement techniques for application of glow discharge optical emission spectroscopy to plasma-surface interaction studies

    Grant number:23560998  2011 - 2013

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    HATANO Yuji, AKAMARU Satoshi

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    Grant amount:\5070000 ( Direct Cost: \3900000 、 Indirect Cost:\1170000 )

    Glow-discharge optical emission spectroscopy (GDOES) allows high resolution and rapid depth profiling of constituent elements in a solid specimen. These features are in principle suitable for the analysis of plasma-facing materials (PFMs) used in fusion devices. There are, however, special requirements for PFM analysis: (1) isotope analysis, (2) quantitative measurement of hydrogen isotopes, (3) helium detection, and (4) influence of hydrogen isotope content on sputtering rate of materials. This study has revealed that (1) resolution of diffraction grating in a commercial GDOES device is sufficiently high to separately detect H and D, (2) thin films of hydrogen absorbing materials are suitable as a standard sample for quantitative analysis of hydrogen isotopes, (3) helium detection is possible using high power, high pressure Ne plasma and (4) there is no significant influence of hydrogen isotope content on sputtering rate of carbon-hydrogen co-deposited films.

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  • TRITIUM PERMEATION, CONTAMINATION AND DECONTAMINATION

    Grant number:19055002  2007 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Priority Areas  Grant-in-Aid for Scientific Research on Priority Areas

    HATANO Yuji, TORIKAI Yuji, AKAMARU Satoshi, OYA Yasuhisa, ODA Takuji, TANAKA Satoru, NAKAMURA Hirofumi, ASAKURA Yamato

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    Grant amount:\114700000 ( Direct Cost: \114700000 )

    The objective of this study is to gain an understanding of tritium (T)-material interactions to minimize uncontrolled tritium emissions from fusion reactors. The main chemical forms of T permeating steel pipes are HT and HTO, and the latter has a far higher risk of internal exposure. We found that the fraction of HTO was able to be reduced by reducing surface coverage of Fe hydroxides. Developments of wet-chemical methods to prepare ceramic permeation barrier coatings enabled reduction in permeation rate to 1/104. Retention of T in tungsten being a leading candidate of plasma-facing material was found to increase significantly with neutron irradiations. Important parameters for assessment of T inventory in a reactor core such as binding energy between T and radiation defects were quantitatively evaluated. Heat treatments under the presence of H and/or D were proposed for efficient decontamination of neutron-irradiated tungsten.

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  • 核融合炉ダイバータにおける水素排気用超透過膜の開拓

    Grant number:14702068  2002 - 2004

    日本学術振興会  科学研究費助成事業 若手研究(A)  若手研究(A)

    波多野 雄治

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    Grant amount:\11440000 ( Direct Cost: \8800000 、 Indirect Cost:\2640000 )

    定常運転核融合炉における周辺粒子制御への応用を目指し、超透過現象を利用したメンブレンポンプの開発が進められている。超透過は、透過膜入射側表面が酸素等の非金属不純物で覆われており、水素同位体の再結合放出が抑制されている場合に発現する。従って、スパッタリング環境下で透過性能を維持するためには、バルク中へ不純物を溶解し連続的に表面偏析させる必要がある。昨年度までに、超透過膜候補材である5族金属の中でも比較的表面状態の制御が容易なNbについて、酸素が支配的な表面偏析元素であることを確認すると共に、水素同位体の表面再結合を酸素が抑制する機構、水素イオンによる偏析酸素のスパッタ率などを調べた。本年度は、中性子照射による誘導放射能が低いという実用上好ましい特性を有するVについて、その特性を評価した。
    まず、本研究経費で整備したプラズマ駆動透過実験装置に厚さ0.1mmのV膜を取り付け、バイアス電圧0〜250V、入射イオン流束0.6〜1.2×10^<19>m^2s^<-1>、膜温度703〜823Kでプラズマ駆動実験を行った。表面不純物がスパッタされるような高いバイアス電圧を印加しても透過速度は減少せず、連続的な不純物の表面偏析により、スパッタ環境下でも超透過が維持されることが確認された。上述のように、Nbの場合には酸素が支配的な表面偏析元素であり、バルク中の酸素濃度と水素同位体の表面反応速度との間に明確な相関が見られた。一方、V表面での水素同位体反応速度は、バルク中の酸素濃度のみならず熱処理条件にも敏感に依存し、複雑な変化を示した。表面分析の結果から、この複雑な変化は硫黄の影響によるものであることが示唆された。また、炭素をプラズマ対向材料として使用する炉では、透過膜表面に炭素が堆積し、炭化物層が形成される可能性がある。そこで予備的実験を行い、V炭化物層が水素透過能を有することを確認した。

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  • HT recovery from tritiated water by laser irradiation

    Grant number:23K17357  2023.6 - 2026.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Pioneering)

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    Grant amount:\25870000 ( Direct Cost: \19900000 、 Indirect Cost:\5970000 )

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  • Interactions between lattice defects and hydrogen isotopes in tungsten and their impact on tritium retention

    Grant number:23K22471  2022.4 - 2026.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Grant amount:\14040000 ( Direct Cost: \10800000 、 Indirect Cost:\3240000 )

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  • Dynamic interactions of lattice defects and hydrogen isotopes in tungsten and its influence on tritium behavior

    Grant number:22H01200  2022.4 - 2026.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Grant amount:\14040000 ( Direct Cost: \10800000 、 Indirect Cost:\3240000 )

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  • 三重水素標的と大強度三重水素ビームによる中性子多体系の探究

    Grant number:20H01924  2020.4 - 2024.3

    日本学術振興会  科学研究費助成事業 基盤研究(B)  基盤研究(B)

    三木 謙二郎, 上坂 友洋, 波多野 雄治, 今井 伸明

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    Grant amount:\17680000 ( Direct Cost: \13600000 、 Indirect Cost:\4080000 )

    本研究では、三重水素標的を製作し、それと大強度三重水素ビームを組み合わせて原子核反応測定を行うことで、原子核系が高アイソスピン状態にある場合についての基礎データを取得することを目指している。
    本年度は特に三重水素標的の製作について重点的に実施した。三重水素標的としては、チタン吸蔵型を採用した。過去の我々の研究により、薄膜に効率よく水素ガスを吸蔵させていく方法は確立していた。しかし、ガス中に微量の不純物が存在しているだけでも吸蔵の障害となるという問題がみられた。そこで、多少不純物が存在する環境下でも水素ガスを吸いやすい製作条件を事前に探索した。その上で、標的の実製作を富山大学の水素同位体科学研究センターにおいて実施した。その結果、厚さ約80ミクロンのチタンフォイルに、チタン原子に対して三重水素原子を1.5倍まで吸蔵させた標的を製作することに成功した。これは原子核物理用のチタン吸蔵型三重水素標的としては世界最高の厚さである。製作した標的は、今後の加速器実験に利用する為に、専用の多重密封チェンバーに封じた上で、理化学研究所へと輸送した。
    また標的製作と並行して、加速器実験で使用する為の実験装置の開発も推進した。標的を設置する為の真空チェンバーの開発を行うとともに、散乱粒子の散乱角度を決定する為の短冊形シンチレーション検出器のテスト機の製作を実施した。後者については、必要性能を満たすことを確認するところまでが完了し、実機の製作へと話を進めることができた。

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  • Plasma driven permeation for plasma facing materials and its hydrogen isotope effect

    Grant number:20H01885  2020.4 - 2023.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

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    Grant amount:\17420000 ( Direct Cost: \13400000 、 Indirect Cost:\4020000 )

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  • 高温・水素雰囲気照射法の開発によるフェライト鋼の中性子照射劣化への水素効果の解明

    Grant number:20H02661  2020.4 - 2023.3

    日本学術振興会  科学研究費助成事業 基盤研究(B)  基盤研究(B)

    外山 健, 秋山 英二, 波多野 雄治

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    Grant amount:\17810000 ( Direct Cost: \13700000 、 Indirect Cost:\4110000 )

    第一に、中性子照射手法の開発を行った。ベルギーBR2を利用して高温・水素雰囲気照射を行うための照射キャプセルを試験するための照射試験チェンバーを作製した。試験チェンバーには電気ヒーター・熱電対・ガスフローシステムなどを設け、試験を精度よく実施可能な構造とした。
    第二に、試料を準備した。鉄-クロム2元系合金やF82H等について、微小引張試験片(4×0.25×16 mm3)およびディスク試験片(φ6×0.2 mm3)等を作製した。これら
    の試料厚さは中性子照射中の水素拡散長よりも十分に小さくした。
    第三に、上記試料のミクロ組織観察および昇温脱離分析を行った。ミクロ組織観察は、金研大洗センターに整備されている透過電子顕微鏡(対象:転位組織、クロムリッチ相、粒界偏析/欠乏、炭化物界面)、陽電子消滅測定(対象:空孔、空孔-水素複合体、空孔クラスター、クロムリッチ相)、3次元アトムプロープ(対象:クロムリッチ相、溶質クラスター、粒界偏析/欠乏、炭化物界面)を用いた。さらに、同じく金研大洗センターに整備されている昇温脱離分析装置で、水素蓄積量を定量評価した。その結果をミクロ組織観察の結果と直接比較した。
    以上により、【ア】空孔クラスターの形成・成長の促進、【イ】溶質原子拡散の促進または抑制、【ウ】転位組織の形成・発達の促進、【エ】金属水素化物の形成、【オ】炭化物組織の回復の促進等について観察し、電子線照射組織の形成・発達に対する水素効果をそれぞれ調べた。

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  • Advanced negative muon beam development

    Grant number:18H05464  2018.6 - 2023.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

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    Grant amount:\144950000 ( Direct Cost: \111500000 、 Indirect Cost:\33450000 )

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  • Experimental study of discharge plasma fusion neutron source with D-T burning

    Grant number:25289340  2013.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    Ohnishi Masami, YAMAMOTO Yasushi, OSAWA Hodaka, HATANO Yuuji, MURATA Isao, MASUDA Kai

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    Grant amount:\16770000 ( Direct Cost: \12900000 、 Indirect Cost:\3870000 )

    A sealed discharge plasma fusion neutron source facility (IECF) witch secures the tritium safety has been developped for the use of tritium gas. The operation with the D-T mixed gas of the mixture ratio, 93%:7% has achieved 8 times more neutrons than D gas.The multiplication agreed with the theoretical estimation.The use of D-T fuel gas with the mixture of 50%:50% by the discharge voltage 70kV and current 60mA is anticipated to produce ten to the 9th power(1/sec) neutron. The experiments verified the D-T fuel IECF can be a neutron source for radiograph, basic research of the cancer therapy,inspection of explosives and landmine detection etc.

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  • Development of high durable Tungsten materials to realize divertor of a fusion reactor.

    Grant number:24246151  2012.4 - 2017.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)  Grant-in-Aid for Scientific Research (A)

    Hasegawa Akira

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    Grant amount:\46150000 ( Direct Cost: \35500000 、 Indirect Cost:\10650000 )

    Divertor is one of component of a fusion reactor to exhaust impurities from plasma. The divertor will be exposed high-flux neutrons, hydrogen ions and high heat load. Tungsten is the most promising candidate material of the divertor component because of its high melting temperature. In this work, we developed new tungsten materials by alloying and controlling fine grain structure to suppress melting and embrittlement, and showed their superior properties compared to conventional tungsten materials by material testing and numerical analysis. Neutron irradiation experiment of these materials was also carried out using a material testing fission reactor in the United States.

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  • Tritium behavior at the interface of oxidized metal under high temperature water

    Grant number:21560875  2009 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    NAKAMURA Hirofumi, HATANO Yuji, ISOBE Kanetsugu

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    Grant amount:\4420000 ( Direct Cost: \3400000 、 Indirect Cost:\1020000 )

    Deuterium behavior into the metals soaked in pressurized high temperature heavy water has been investigated in order to understand the oxidation initiated tritium infiltration in the nuclear reactor such as steel or nickel. Deuterium amount and depth distribution of elements in samples oxidized in hot heavy water were measured by the thermal desorption method and a glow discharge optical elemental spectroscopy method, respectively. As the results, it was found that deuterium infiltration into the material would be initiated by the deuterium gas generated at the oxidation process of metal at the oxide. metal interface. Nickel as the anti corrosion metal and gold plating as the permeation reduction coating could be relatively effective to prevent deuterium infiltration into the metal.

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  • Research and development on safety confinement and permeation control of tritium for fusion reactor

    Grant number:19055010  2007 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Priority Areas  Grant-in-Aid for Scientific Research on Priority Areas

    YAMANISHI Toshihiko, HATANO Yuuji, OKUNO Kenji, SUGIYAMA Takahiko, HARA Masanori, NISHIKAWA Masabumi, KOBAYASHI Kaori, KURATA Rie

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    Grant amount:\4400000 ( Direct Cost: \4400000 )

    Two workshops were held in a year as a joint workshop of our two R&D groups. A series of discussions on the R&D results and future plans was made in the workshops. Through these workshops, our annual R&D goal was attained in each year. In addition, we have presented our R&D results at many domestic and international conferences. Quite valuable comments have been obtained through the discussions at the conferences to carry out our R&D subjects. We accordingly could make a set of database for the safety of fusion reactors: confinement of tritium; permeation barrier; and safe handling. Our R&D subjects are quite unique from viewpoint of the safety having the interface to the environment. As a typical deliverable of our R&D results, we have agreed to make a tritium handbook in the next fiscal year.

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  • IMRPVEMENT OF HIGH TEMPERATURE DURABILITY OF COMPOSITE HYDROGEN PERMEATION MEMBRANE BY USING CARBIDES AND NITRIDES OF GROUP 4 METALS AS INTERMEDIATE LAYER

    Grant number:19360313  2007 - 2009

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    HATANO Yuji, HARA Masanori

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    Grant amount:\14170000 ( Direct Cost: \10900000 、 Indirect Cost:\3270000 )

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  • Carbides of Group 4 and 5 Metals as Functional Materials for Hydrogen Energy

    Grant number:17560613  2005 - 2006

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    HATANO Yuji, HARA Masanori

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    Grant amount:\3200000 ( Direct Cost: \3200000 )

    Carbides of group 4 and 5 metals have unique physical and chemical properties such as refractoriness, extreme hardness and high chemical stability. Hence, systematic studies on the interactions between these carbides and hydrogen isotopes may lead to the development of new functional materials for handling of hydrogen isotopes. From these viewpoints, hydrogen absorption, desorption, diffusion and permeation were examined for these carbides in the present study.
    Hydrogen absorption and desorption by powder specimens of TiC and ZrC were examined in the range of temperature 773 to 973 K and H_2 pressure 1 Pa to 50 kPa. Reversible hydrogen absorption-desorption was observed for these carbides, although TiN and ZrN having the same crystal structure as carbides did not react with hydrogen. Such significant difference between carbides and nitrides was ascribed to the presence of carbon vacancy in the former. The equilibrium hydrogen concentration was 0.1-1 mol% in TiC and 0.01 - 0.1 mol% in ZrC under the present conditions; the solubility of hydrogen in the carbides showed much weaker dependence on H_2 pressure than that expected from Sieverts' law. The diffusivity of hydrogen in TiC was also evaluated.
    The hydrogen permeation through the carbides of group 5 metals was investigated at 573 - 773 K by examining the hydrogen absorption by sheet type specimens of group 5 metals with carbides layers. The thickness of carbide layers ranged 100 nm to several μm. Rapid hydrogen absorption was observed if Pd coating was prepared on the specimen surfaces over the carbide layers, although the absorption rate without Pd coating was significantly smaller. These observations indicated that the carbides of group 5 metals have rather high permeability for hydrogen, although their surfaces are sensitive to poisoning effects by impurities in hydrogen gas such as water vapor.

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  • Development and application in the new method of the surface coating of microparticles, the barrel-sputtering system

    Grant number:16350112  2004 - 2006

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    ABE Takayuki, HATANO Yuji, HARA Masanori

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    Grant amount:\13700000 ( Direct Cost: \13700000 )

    Powdery materials are available in many industrial materials and products. In order to develop the more attractive powdery materials, surface modification of powdery materials is one of the useful method. However, the conventional method was only the wet process which has some problem such as disposal of waste solution, and limiting of the modified materials. Therefore, a new RF sputtering system installed with a hexagonal-barrel was developed for modifying the surfaces of powdery materials in dry process, named as barrel-sputtering system.
    The validity of this system was examined for surface coating of metal, ceramics, polymer and ionic crystal powders with different grain shapes and sizes. It was found that the surfaces of powder grains could be uniformly coated with metal, alloys and oxides layers, regardless of their shapes. In addition, the size of powder grains was applicable from several centimeters to several hundred nanometers. Moreover, the form of coating materials was controlled between a thin layer and the nanoparticles.
    For example to develop the functional powdery materials, the electrochemical catalyst as the usage in the polymer electrolyte fuel cell was prepared by using the system. The carbon black powder modified with Pt-Ru nanoparticles showed the excellent performance in comparison with the catalysts prepared by the conventional wet process.

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  • Construction of the standard system for absolute measurement of tritium

    Grant number:15206103  2003 - 2005

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)  Grant-in-Aid for Scientific Research (A)

    MATSUYAMA Masao, HATANO Yuji, TORIKAI Yuji, HARA Masanori

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    Grant amount:\45500000 ( Direct Cost: \35000000 、 Indirect Cost:\10500000 )

    To evaluate the absolute amount of tritium, a calorimetric system was designed and constructed, and its basic performance has been tested. The calorimetric system is applicable to measure solid, liquid and gaseous tritium. For this application the present calorimetric system is equipped with a high sensitivity calorimeter, a tritium container, total pressure gauges, a quadrupole mass spectrometer, and high vacuum systems. A twin type thermal conductivity calorimeter with a vacuum shielding was specially employed for the present purpose. A calibration curve of the calorimeter has been prepared at first using solid materials absorbed a given amount of tritium, and the following linear relation was obtained : E_<out>=(0.2694±0.0010) Q_<in>, where E_<out> describes the output (μV) from the heat sensors and Q_<in> the input power (μW) by Joule heating to the sample cell. In addition, the lower detection limit was estimated to be 0.15μW from stability of the calorimeter, which corresponds to the tritium amount of 0.16 GBq. As the first test, Zr-Ni alloy powder loaded with a given amount of tritium was measured by the calorimeter and the amount of tritium was evaluated to be 26.3 GBq, which was a little lower than the tritium activity determined previously by using a small ionization chamber. The second test was applied to measurement of tritiated water. The observed calorific value was about ten times greater than that of the expected value. It was seen that this is due to the oxidation reaction of a liquid cell with oxygen dissolved into tritiated water. Improvement of a liquid cell will lead to successful measurements of tritium.

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  • Absorption of Hydrogen Isotopes by Vanadium-based Low Activation Materials

    Grant number:14380218  2002 - 2004

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    WATANABE Kuniaki, HATANO Yuji, HARA Masanori

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    Grant amount:\8000000 ( Direct Cost: \8000000 )

    Vanadium alloys are potential candidates of low activation structural materials for fusion reactors. Permeability of hydrogen isotopes including tritium, however, is high in these alloys. It is known that the permeation of hydrogen isotopes though group 5 metals sensitively depends on surface states, but the systematic study has not been carried out for these alloys. From this viewpoint, absorption of H_2 and D_2 by V-Ti and V-Ti-Cr alloys was examined in the present study in combination with surface analysis by X-ray photoelectron spectroscopy to understand the correlation between surface chemical states and the reaction rates of hydrogen isotopes.
    Sheet type specimens of V-4Ti alloy and V-4Ti-4Cr alloy supplied by the National Institute for Fusion Science were installed in an ultra-high vacuum chamber, and their surfaces were analyzed after heat treatments at 673-1273 K. Enrichment of Ti on the surfaces were clearly observed above 800 K for both alloys. The specimens with different surface Ti concentrations were prepared by respective heat treatments, and hydrogen absorption was examined in a temperature range from 523 to 1023 K. The sticking coefficient α on the surface without Ti enrichment was 10^<-3> -10^<-4>, while the surface segregation of Ti up to [Ti]/[V] 〜0.5 led to the reduction in α by 2-3 orders of magnitude. Namely, the surface segregation of Ti caused the barrier effect against hydrogen permeation. The potential barrier against dissociative adsorption of hydrogen evaluated by ab initio calculations showed that direct influence of Ti is negligibly small. It was concluded that the reduction in α was due to the increase in the surface coverage of impurity oxygen caused by the presence of Ti whose chemical affinity to oxygen is larger that of V. The isotope effect between H_2 and D_2 was small and not observable under the present conditions.

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  • Tracking of tritium trapped on/in high-Z materials by BIXS

    Grant number:13480133  2001 - 2002

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    MATSUYAMA Masao, HARA Masanori, TORIKAI Yuji, HATANO Yuji

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    Grant amount:\14300000 ( Direct Cost: \14300000 )

    Trap and/or diffusion behavior of tritium in high-Z materials such as W and Mo, which are promising candidate as plasma-facing materials of fusion devices, have been studied by means of β-ray-induced X-ray spectrometry (BIXS). Main results obtained in the present study were as follows :
    (1) Diffusion behavior of tritium in W at room temperature
    A given amount of tritium ions was implanted in a tungsten sample, and then change in β-ray-induced X-ray spectra at room temperature was tracked. The X-ray spectra observed were analyzed by means of computer simulation to estimate tritium depth profiles in tungsten. From change in the depth profiles, the diffusion coefficient of tritium at room temperature was estimated to be 2.4x10^<19> m^2/s.
    (2) Thermal behavior of tritium ions implanted into W
    The tungsten sample irradiated with tritium was stepwise heated from room temperature to 700℃, and an X-ray spectrum was measured after each heating As a result, both X-ray intensities of Ar and W decreased with the increase of temperature, and they decreased to about 10% of the initial intensity at 500℃, indicating hat most of the implanted tritium desorbed from surface layers and bulk of the sample.
    (3) Effect of He pre-irradiation on the trap and diffusion behavior of tritium
    When tritium was implanted into the He pre-irradiation sample, the X-ray intensity of Ar was about 5 times great in comparison with the He non-irradiation sample, and no change in the intensity at room temperature was observed for five months. Namely, it was seen that the retention of tritium strongly increased with the He pre-irradiation. The amount of tritium in surface layers decreased with heating, but that in bulk did not change up to 350℃. This indicates that the implanted tritium was strongly trapped at lattice imperfections formed by the He pre-irradiation, and the trapping energy of tritium was estimated to be about 1.2eV.

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  • Direct Removal of Tritium from Mixture Gas by Alloy Getter with Functional Surfaces

    Grant number:12680488  2000 - 2001

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    HATANO Yuji, HARA Masanori, MATSUYAMA Masao, WATANABE Kimiaki

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    Grant amount:\3600000 ( Direct Cost: \3600000 )

    Tritium and deuterium coexist with helium and other impurities in exhaust gas from fusion reactor core. The separation of tritium from He and other gases is important task from the viewpoints of safety assessment and tritium economy. Direct removal of tritium by alloy getters with low equilibrium tritium pressure is safe and efficient method for tritium separation. The efficiency for tritium removal, however, can be degraded by poisoning by impurities such oxygen and carbon. The objective of the present project is to explore the surface modification technique to drastically improve the durability of getters against poisoning. ZrNi was selected as model material.
    Pd coating was carried out in 2001 with electroless plating technique. Specimen was exposed to argon gas containing H_2O, CO_2 and O_2, and degradation in deuterium absorption rate was examined at temperatures from 373 to 573 K. The durability against poisoning was significantly improved by Pd coating above 473 K. It should be emphasized that no significant degradation was observed for Pd coated specimen at 573 K, whereas the specimen without Pd coating was completely deactivated by 2 h exposure.
    In 2001, attention was focused on improvement of durability at lower temperatures. Sputter deposition was selected as new Pd coating technique. The activation behavior after exposure to air was examined to investigate the influence of surface impurities on absorption of hydrogen isotopes. The Pd coated specimen was activated by heating in vacuum at 423 K, whereas activation at 873 K was necessary for the specimen without Pd coating. This observation indicated that no stable oxide was formed at the surface of Pd coated specimen by exposure to air at room temperature. So, high durability at low temperature is expected.
    The mass analyzer purchased was used to analyze impurities in argon, deuterium and hydrogen gases.

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  • 低放射化バナジウム合金中の水素同位体挙動

    2000

    科学研究費補助金 

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    Grant type:Competitive

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  • Hydrogen permeation membrane

    2000

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    Grant type:Competitive

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  • Interaction between materials and atomic/ionic hydrogen isotopes

    2000

    Grant-in-Aid for Scientific Research 

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    Grant type:Competitive

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  • Tritium Behavior in Low-activation Vanadium Alloys

    2000

    Grant-in-Aid for Scientific Research 

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    Grant type:Competitive

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  • 水素透過膜の開発

    2000

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    Grant type:Competitive

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  • 原子・イオン状水素同位体と金属材料の相互作用

    2000

    科学研究費補助金 

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  • KINETIC ISOTOPE EFFECTS ON HYDROGEN ABSORPTION AND DESORPTION BY Pd-ALLOYS

    Grant number:10480106  1998 - 2000

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B).

    WATANABE Kuniaki, HATANO Yuhji, MATSUYAMA Masao, ASHIDA Kan

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    Grant amount:\4200000 ( Direct Cost: \4200000 )

    The present authors have developed a new type of gas chromatography for separation of hydrogen isotopes. It can be operated near room temperature with any replacement gases by use of a column prepared from powder of Pt-8 at%Pd. It is important, however, to investigate in detail isotope effects on hydrogen absorption and desorption to improve the separation efficiency under much moderate operation conditions. The objective of the present research project is to understand mechanisms of hydrogen absorption and desorption, and to evaluate the kinetic as well as thermodynamic isotope effects.
    Materials considered in this program were Pt-based alloys : Pt-Pd and Pt-Ni alloys. The kinetics was measured using a vacuum microbalance and the thermodynamic properties of alloys were determined from PCT curves obtained by using a conventional constant volume apparatus.
    It was found that the rates of hydrogen absorption and desorption were determined by adsorption and desorption on the surface, and diffusion in the bulk, where all of them contribute equally. Then the kinetics was described by a diffusion equations as
    <<numerical formula>>
    All of the reaction curves obtained in the present study could be reproduced well by this kinetic model. According to the kinetic analyses, the rate of diffusion were not so fast, about 100 times slower than that in pure Pd. The analyses showed that the rate of protium adsorption on the surface is about 1.5 times greater than that of deuterium, whereas protium desorbs from the surface about 1/2 slower than deuterium. As for the diffusion, deuterium can migrate in the bulk about 2 times faster than protium near room temperature for Pd-4at%Pt alloy. This alloy showed a large thermodynamic isotope effect : the isotope effect defined by a ratio of equilibrium pressures, P_<D_2>/P_<H_2>, was found to be about 5 around room temperature. The present research project reveled that the separation efficiency can be improved much by preparing the separation column from materials having large thermodynamic isotope effects, since the kinetic isotope effects are expected to be relative smaller. In this case, however, the present study also showed that powder particles for the column should be small enough to assure equilibrium conditions. These conclusions can be a guiding principle to improve the newly developed gas chromatograph for hydrogen isotope separation working at room temperature using any replacement gases.

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  • Study on Tritium Handling

    1998

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    Grant type:Competitive

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  • トリチウムの安全取扱い技術に関する研究

    1998

    国際共同研究 

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  • TRITIUM TRAPPING IN MULTI-LAYER PLASMA FACING MATERIALS

    Grant number:09680489  1997 - 1998

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    SHU Wei Min, HATANO Yuji, MATSUYAMA Masao, WATANABE Kuniaki, ASHIDA Kan

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    Grant amount:\2900000 ( Direct Cost: \2900000 )

    The permeation and inventory of tritium in a multi-layer divertor were examined under ITER condition by an analytic model taking into account temperature gradient and erosion effect. The erosion accelerated the tritium permeation for both Be/Cu and W/Cu options. Its effect on tritium inventory was, however, significantly different between the former and the latter. In the case of the Be/Cu option1 the tritium inventory in the Be layer dominated the total, and hence the decrease of Be layer thickness due to the erosion resulted in the reduction of the total inventory, In the case of W/Cu option, the tritium inventory gradually decreased initially with the progression of erosion and increased sharply. This distinct behavior was ascribed to the difference in relative magnitude of tritium solubility between Be and Cu, and between W and Cu.
    The influence of damaged surface layer on the permeation and inventory of hydrogen was also examined experimentally. The upstream surface of a vanadium membrane (0.1 mm in thickness) was exposed to hydrogen gas at 640 Pa and 673 K, and the steady state of the permeation was attained. Then. the downstream surface of the membrane was irradiated with He ions. No significant variation of the permeation rate was observed in the initial stage of irradiation. The permeation rate, however, started to decrease at the fluence of 10^<21> m^<-2> with further irradiation. This was attributed to the trapping effect on hydrogen diffusion by radiation defects. The irradiation of He ions was intermitted when the permeation rate decreased to a half of the initial value, and then the ion beam was switched on and off repeatedly. The permeation rate increased promptly by the switching-on and decreased by the switching-off These results clearly indicated that the trapping effect under irradiation is small compared with that in the absence of irradiation.

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  • 5族金属中のトリチウムの拡散と水素同位体間の動的相関

    Grant number:09226231  1997

    日本学術振興会  科学研究費助成事業 重点領域研究  重点領域研究

    杉崎 昌和, 波多野 雄治, 橋爪 健一

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    Grant amount:\2000000 ( Direct Cost: \2000000 )

    5族金属中における水素同位体の拡散が量子トンネル効果に基づくものであることは良く知られているが、このような場合に異種の同位体を混合したら、拡散係数がどのように変化するかということは非常に興味深い問題である。本研究ではこのような観点から、5族金属中にトリチウムと軽水素もしくは重水素を溶解した系におけるトリチウムのトレーサー拡散係数を測定し、共存する同位体の種類によりトリチウムのトレーサー拡散係数が変化するかどうかを調べた。測定はバナジウム、ニオブ、タンタルについて行った。トリチウムのトレーサー拡散係数の測定にあたっては、当研究グループが開発したグロー放電注入法を用いた。実験で用いた試料の純度は約99.9%、形状は直径5mm、長さ50mmである。先ず、試料に軽水素もしくは重水素を所定の濃度均一に溶解しておき、試料の一端面をトリチウムガスのグロー放電プラズマに曝し、ごく微量のトリチウムを試料端面に注入する。トリチウムの拡散実験は250℃で行った。
    実験により得られたトリチウムの拡散係数は共存する同位体の濃度により著しく変化し、濃度が大きくなるに従い減少する傾向を示した。また、重水素中より軽水素中の方がわずかに大きくなる傾向を示した。この同位体の種類による違いはトリチウムと共存する水素同位体間の動的相関によるものであると考えられる。なお、今後このトリチウムのトレーサー拡散係数の温度依存性を測定し、量子トンネル効果の機構を研究して行く予定である。なお、この研究成果の一部はInternational Conference of Fusion Reactor Materials(ICFRM-8,Sendai,October1997)において発表した。論文タイトルは「Influence of coexisting hydrogen isotopes on diffusion of tritium in niobium」である。

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  • Development of the bremsstrahlung counting method for in-situ measurements of tritium absorbed into materials.

    Grant number:08458131  1996 - 1998

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    MATSUYAMA Masao, HATANO Yuji, SHU Wei Min, ASHIDA Kan, WATANABE Kuniaki

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    Grant amount:\4900000 ( Direct Cost: \4900000 )

    Research and development of techniques to lower tritium inventory in a fuel cycle is indispensable for the establishment of a thermonuclear fusion reactor. For this purpose, it is necessary to develop the techniques to measure in-situ and nondestructively the amount and the depth profile of tritium dissolved into materials. From this viewpoint, (i) correlation between a depth profile of tritium and a bremsstrahlung x-ray spectrum and (ii) analysis of a bremsstrahlung x-ray spectrum with a computer simulation have been examined in the present study. First of all, a simulation program has been developed to evaluate the tritium depth profiles in materials from analyses of a bremsstrahlung x-ray spectrum by means of a computer simulation. To examine validity of the developed program, a bremsstrahlung x-ray spectrum was measured using an organic polymer material labeled uniformly with tritium as a model material, and it was compared with the spectrum obtained by a computer simulation. As a result, it was seen that the spectrum obtained from the simulation agreed quite well with that observed by measurements, and for acrylic resin mainly consisting of low-Z elements such as carbon, it was confirmed that it is possible to measure tritium which exist in the depth from the surface to about 1mm. From those results, it was revealed that the developed simulation program is valuable for the analyses of a bremsstrahlung x-ray spectrum emitted from the materials containing tritium. After these experiments, applicability of the present method to the metallic materials such as Pd, Zr and ZrNi having a non-uniform depth profile of tritium was examined. In these materials a characteristic x-ray spectrum was observed along with a bremsstrahlung x-ray spectrum, and the simulation program mentioned above, therefore, was improved to analyze a complex spectrum consisting of two kinds of x-ray spectrum. It was seen that the improved program is thoroughly applicable to reproduction of the complex spectra. Accordingly, it was concluded that the present method is quite useful for in-situ and nondestructive measurements of a tritium depth profile for metallic materials constituted of multi-components.

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  • 非化学量論性金属酸化物中への水素の溶解挙動と電子物性に与える影響

    Grant number:08750791  1996

    日本学術振興会  科学研究費助成事業 奨励研究(A)  奨励研究(A)

    波多野 雄治

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    Grant amount:\900000 ( Direct Cost: \900000 )

    高純度ジルコニウム(クリスタルバ-)の板状試料を673Kにおいて0.1MPaの水蒸気または重水水蒸気中で10時間酸化させることにより、水素または重水素を約1mol%含んだ厚さ約800nmの緻密なジルコニア被膜を形成させた。また、同様の温度・圧力の酸素ガス中で60時間酸化させることにより、同様の厚さの水素を含まないジルコニア被膜を形成させた。
    水素のジルコニア中での化学状態を調べるため、それぞれの被膜について高感度反射法により赤外吸収スペクトルを測定した。波数領域650〜850cm^<-1>のスペクトルに(重)水素を含む被膜と含まない被膜との間に顕著な違いが見られ、(重)水素を含む被膜でのみ810cm^<-1>に大きなピークが観察された。また、軽水素を含む被膜と重水素を含む被膜との間には、スペクトルに差異は見られなかった。このことから、810cm^<-1>のピークは水素自身の振動に起因するのではなく、水素が溶解することによりジルコニアの格子振動の状態が著しく変化したことに起因していることがわかった。なお、O-HおよびO-Dの振動に起因するピークは観察されず、水素は緻密なジルコニア中ではO-H、O-Dとしては存在していないことがわかった。
    水素の溶解がジルコニアの電子物性に及ぼす影響を調べるため、水素を含む被膜と含まない被膜について、X線光電子分光法を用いて価電子帯における電子の状態密度分布を測定すると共に、ケルビン法により仕事関数を測定した。価電子帯の状態密度分布には水素の溶解による顕著な変化は見られなかったが、仕事関数については水素を含む被膜の方が大きな値を示す傾向が見られた。これらの結果は、水素が溶解することによりジルコニアのフェルミ準位およびバンドギャップが変化していることを示唆している。

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  • ESTIMATION OF HYDROGEN REDISTRIBUTION IN ZIRCALOY CLADDING OF SPENT FUEL DURING DRY STORAGE AND ITS INFLUENCE ON MECHANICAL PROPERTIES OF CLADDING

    Grant number:06558071  1994 - 1995

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Developmental Scientific Research (B)  Grant-in-Aid for Developmental Scientific Research (B)

    SUGISAKI Masayasu, HATANO Yuji, HASHIZUME Kenichi

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    Grant amount:\3700000 ( Direct Cost: \3700000 )

    The toughness of Ziraloy-2 specimens (size : 5mm x 10mm x 50mm) containing 100 ppm or 400 ppm hydrogen was measured with the Charpy test in a temperature region from room temperature to 250゜C.The hydrogen concentration in the specimens was gradient in one dimension, which was prepared with the thermomigration of hydrogen. The measurement suggested that the toughness of the specimen, in which the hydride is nonuniformly distributed, was larger than that of the specimen in which the hydride was uniformly distributed. The redistribution phenomena of hydride in the Zircaloy cladding of the fuel for the light water cooled reactors under the conditions of the dry storage was analyzed from the thermodynamical aspect and the rate of redistribution of the hydride was calculated with the computer simulation, in which the burn-up of the fuel was assumed as 40-55Gwd/t and the amount of hydrogen absorbed in the cladding was also assumed as 300-400ppm. In the calculation, the temperature conditions of the dry storage was assumed as 150-450゜C.Followings were concluded : (1) The nonuniform distribution of the hydride in the radial direction of the Zircaloy claddings, which was brought about in the reactors, would not be relaxd under the designed temperature conditions of the dry storage. (2) In the case of the dry storage of the spent fuel with the Zircaloy cladding containing 400 ppm hydrogen, the nonuniform distribution of the hydride in the Zircaloy cladding would be collapsed and uniform distribution of the hydride would be built up in an hour provided that the temperature of the Zircaloy cladding would be increased over 480゜C because of certain accidents. This redistribution of the hydride would bring about the marked decrease of the toughness of the Zircaloy cladding. These results were presented in the meeting of International Atomic Energy Agency and in the Fall Meeting of Nihon Genshiryoku Gakkai.

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  • Tritium Inventory in Fuel Element of Light Water Reactor and Release Mechanism of Tritium to Reactor Coolant

    Grant number:02452295  1990 - 1992

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for General Scientific Research (B)  Grant-in-Aid for General Scientific Research (B)

    SUGISAKI Masayasu, HATANO Yuji, HASHIZUME Kenichi

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    Grant amount:\3700000 ( Direct Cost: \3700000 )

    The release mechanisms of tritium produced by ternary fission of uranium to reactor coolant were experimentally examined. In particular, the influences of following three elementary processes were considered; (1)Influence of thermal gradient upon the diffusion of tritium in the zircaloy cladding was examined by carrying out the thermo-migration experiment of tritium and protiumin zirconium. (2)Interaction of tritium diffusion with that of protium originated from the oxidation of cladding materials with high temperature and pressure cooling water was examined on the basis of the oxidation experiment of zircaloy with high temperature steam,in which dissolution mechanism of hydrogen originated from the reduction of water was quantitatively examined. (3)For examination of the influence of oxygen dissolved in zircaloy upon the diffusion of tritium, a new type exeprimental method to measure the diffusion coefficient of hydrogen isotopes was developed, which is based on the implantation technique of hydrogen isotopes into the specimen surface by making use of glow-discharge of hydrogen gas.

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  • セラミックス材料中の水素挙動

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  • Study on hydrogen embrittlement mechanism by use of tritium autoradiography and imaging plate

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  • Development of new hydrogen permeation membrane

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  • Hydrogen behavior in ceramic materials

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  • Influence of surface impurities on absorption, diffusion and recombinative desorption on metal surfaces.

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  • トリチウムオートラジオグラフ法・イメージングプレート法による水素脆化機構の研究

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  • 高性能水素透過膜の開発

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  • 水素同位体の吸着・表面拡散・再結合脱離に及ぼす表面不純物の影響

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Teaching Experience

  • Advanced Energy Physics Engineering

    2024.7 Institution:Tohoku University

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  • 科学と社会

    2020.4 - 2024.6 Institution:富山大学

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  • 富山から考える震災・復興学

    2016.4 - 2024.6 Institution:富山大学

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  • Introduction to Radiochemistry

    2016 - 2024.6 Institution:University of Toyama

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  • Advanced Radiation Chemistry

    2016 - 2024.6 Institution:University of Toyama

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  • Fusion Reactor Materials Science

    2000 - 2024.6 Institution:University of Toyama

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  • Materials Science

    2000 - 2015 Institution:University of Toyama

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  • 機能性材料学

    1998.4 - 2016.3 Institution:富山大学

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