掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/g7yp-d6yq

researchmap

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/zz3y-22fh

arXiv

researchmap

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.109.065804

arXiv

researchmap

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.105.064602

researchmap

掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society ({APS})  

DOI： 10.1103/PhysRevC.105.045807

researchmap

掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society ({APS})  

DOI： 10.1103/PhysRevC.105.044611

researchmap

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevA.105.013304

researchmap

掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.physletb.2020.135626

Scopus

researchmap

掲載種別：研究論文（学術雑誌）  

DOI： 10.5506/APhysPolB.51.605

Scopus

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.99.051602

Scopus

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society  

DOI： 10.1103/PhysRevLett.120.253002

Scopus

arXiv

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society  

DOI： 10.1103/PhysRevC.97.034603

Scopus

arXiv

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society  

Energy dissipative processes play a key role in how quantum many-body systems dynamically evolve toward equilibrium. In closed quantum systems, such processes are attributed to the transfer of energy from collective motion to single-particle degrees of freedom; however, the quantum many-body dynamics of this evolutionary process is poorly understood. To explore energy dissipative phenomena and equilibration dynamics in one such system, an experimental investigation of deep-inelastic and fusion-fission outcomes in the 58Ni+60Ni reaction has been carried out. Experimental outcomes have been compared to theoretical predictions using time dependent Hartree-Fock and time dependent random phase approximation approaches, which, respectively, incorporate one-body energy dissipation and fluctuations. Excellent quantitative agreement has been found between experiment and calculations, indicating that microscopic models incorporating one-body dissipation and fluctuations provide a potential tool for exploring dissipation in low-energy heavy ion collisions.

DOI： 10.1103/PhysRevLett.120.022501

arXiv

researchmap

記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.5506/APhysPolB.49.281

Scopus

arXiv

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society  

Multinucleon transfer processes in low-energy heavy ion reactions have
attracted increasing interest in recent years aiming at production of new
neutron-rich isotopes. Clearly, it is an imperative task to further develop
understanding of underlying reaction mechanisms to lead experiments to success.
In this paper, from systematic time-dependent Hartree-Fock calculations for the
$^{238}$U+$^{124}$Sn reaction, it is demonstrated that transfer dynamics depend
strongly on the orientations of $^{238}$U, quantum shells, and collision
energies. Two important conclusions are obtained: (i) Experimentally observed
many-proton transfer from $^{238}$U to $^{124}$Sn can be explained by a
multinucleon transfer mechanism governed by enhanced neck evolution in tip
collisions; (ii) Novel reaction dynamics are observed in tip collisions at
energies substantially above the Coulomb barrier, where a number of nucleons
are transferred from $^{124}$Sn to $^{238}$U, producing transuranium nuclei as
primary reaction products, that could be a means to synthesize superheavy
nuclei. Both results indicate the importance of the neck (shape) evolution
dynamics, which are sensitive to the orientations, shell effects and collision
energies, for exploring possible pathways to produce new unstable nuclei.

DOI： 10.1103/PhysRevC.96.041601

arXiv

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.96.041601

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society  

We demonstrate, within symmetry unrestricted time-dependent density
functional theory, the existence of new effects in low-energy nuclear reactions
which originate from superfluidity. The dynamics of the pairing field induces
solitonic excitations in the colliding nuclear systems, leading to qualitative
changes in the reaction dynamics. The solitonic excitation prevents collective
energy dissipation and effectively suppresses fusion cross section. We
demonstrate how the variations of the total kinetic energy of the fragments can
be traced back to the energy stored in the superfluid junction of colliding
nuclei. Both contact time and scattering angle in non-central collisions are
significantly affected. The modification of the fusion cross section and
possibilities for its experimental detection are discussed.

DOI： 10.1103/PhysRevLett.119.042501

arXiv

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society  

Background: At the forefront of the nuclear science, production of new
neutron-rich isotopes is continuously pursued at accelerator laboratories all
over the world. To explore the currently-unknown territories in the nuclear
chart far away from the stability, reliable theoretical predictions are
inevitable.
Purpose: To provide a reliable prediction of production cross sections taking
into account secondary deexcitation processes, both particle evaporation and
fission, a new method called TDHF+GEMINI is proposed, which combines the
microscopic time-dependent Hartree-Fock (TDHF) theory with a sophisticated
statistical compound-nucleus deexcitation model, GEMINI++.
Results: The method is applied for multinucleon transfer processes in
low-energy heavy ion reactions. It is shown that the inclusion of secondary
deexcitation processes, which are dominated by neutron evaporation in the
present systems, substantially improves agreement with the experimental data.
The magnitude of the evaporation effects is very similar to the one observed in
GRAZING calculations. TDHF+GEMINI provides better description of the absolute
value of the cross sections for channels involving transfer of more than one
protons, compared with the GRAZING results. However, there remain discrepancies
between the measurements and the calculated cross sections, indicating a limit
of the theoretical framework that works with a single mean-field potential.
Possible causes of the discrepancies are discussed.
Conclusions: In order to perfectly reproduce experimental cross sections for
multinucleon transfer processes, one should go beyond the standard
self-consistent mean-field description. Nevertheless, the proposed method will
provide valuable information to optimize production mechanisms of new
neutron-rich nuclei through its microscopic, non-empirical predictions.
(Shortened due to the word limit)

DOI： 10.1103/PhysRevC.96.014615

arXiv

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevLett.119.042501

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.96.014615

Web of Science

researchmap

記述言語：英語  

We investigate the role of the pairing field dynamics in low-energy heavy ion
reactions within the nuclear time-dependent density functional theory extended
to superfluid systems. Recently, we have reported on unexpectedly large effects
associated with the relative phase of the pairing field of colliding nuclei on
the reaction outcomes, such as the total kinetic energy and the fusion cross
section [P. Magierski, K. Sekizawa, and G. Wlaz{\l}owski, arXiv:1611.10261
[nucl-th]]. We have elucidated that the effects are due to creation of a
"domain wall" or a "solitonic structure" of the pairing field in the neck
region, which hinders energy dissipation as well as the neck formation, leading
to significant changes of the reaction dynamics. The situation nicely mimics
the one extensively studied experimentally with ultracold atomic gases, where
two clouds of superfluid atoms possessing different phases of the pairing field
are forced to merge, creating various topological excitations, quantum vortices
and solitons, as well as Josephson currents. In this paper, we present
unpublished results for a lighter system, namely, $^{44}$Ca+$^{44}$Ca. It is
shown that the pairing effects on the fusion hindrance are rather small in
lighter systems, due to a strong tendency towards fusion, which is consistent
with an earlier study.

DOI： 10.22323/1.281.0214

arXiv

researchmap

その他リンク： http://arxiv.org/pdf/1702.00069v1

記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.1051/epjconf/201716300051

Web of Science

arXiv

researchmap

その他リンク： http://arxiv.org/pdf/1705.04902v1

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.5506/APhysPolBSupp.10.225

Scopus

arXiv

researchmap

その他リンク： http://arxiv.org/pdf/1611.10177v3

記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.5506/APhysPolBSupp.10.225

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society  

The nature of the interaction between superfluid vortices and the neutron
star crust, conjectured by Anderson and Itoh in 1975 to be at the heart vortex
creep and the cause of glitches, has been a long-standing question in
astrophysics. Using a qualitatively new approach, we follow the dynamics as
superfluid vortices move in response to the presence of "nuclei" (nuclear
defects in the crust). The resulting motion is perpendicular to the force,
similar to the motion of a spinning top when pushed. We show that nuclei repel
vortices in the neutron star crust, and characterize the force as a function of
the vortex-nucleus separation.

DOI： 10.1103/PhysRevLett.117.232701

arXiv

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevLett.117.232701

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society ({APS})  

Background: Multinucleon transfer (MNT) and quasifission (QF) processes are
dominant processes in low-energy collisions of two heavy nuclei. They are
expected to be useful to produce neutron-rich unstable nuclei. Nuclear dynamics
leading to these processes depends sensitively on nuclear properties such as
deformation and shell structure. Purpose: We elucidate reaction mechanisms of
MNT and QF processes involving heavy deformed nuclei, making detailed
comparisons between microscopic time-dependent Hartree-Fock (TDHF) calculations
and measurements for the $^{64}$Ni+$^{238}$U reaction. Methods:
Three-dimensional Skyrme-TDHF calculations are performed. Particle-number
projection method is used to evaluate MNT cross sections from the TDHF wave
function after collision. Results: Fragment masses, total kinetic energy (TKE),
scattering angle, contact time, and MNT cross sections are investigated for the
$^{64}$Ni+$^{238}$U reaction. They show reasonable agreements with
measurements. At small impact parameters, collision dynamics depends
sensitively on the orientation of deformed $^{238}$U. In tip (side) collisions,
we find a larger (smaller) TKE and a shorter (longer) contact time. In tip
collisions, we find a strong influence of quantum shells around $^{208}$Pb.
Conclusions: It is confirmed that the TDHF calculations reasonably describe
both MNT and QF processes in the $^{64}$Ni+$^{238}$U reaction. Analyses of this
system indicates the significance of the nuclear structure effects such as
deformation and quantum shells in nuclear reaction dynamics at low energies.

DOI： 10.1103/physrevc.93.054616

arXiv

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.93.054616

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.7566/JPSCP.14.010807

Web of Science

arXiv

researchmap

その他リンク： http://arxiv.org/pdf/1609.03865v1

記述言語：英語  

researchmap

記述言語：英語  

researchmap

記述言語：日本語   出版者・発行元：一般社団法人日本物理学会  

DOI： 10.11316/jpsgaiyo.71.1.0_218

CiNii Books

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Time-dependent Hartree-Fock (TDHF) theory has achieved a remarkable success
in describing and understanding nuclear many-body dynamics from nucleons'
degrees of freedom. We here report our investigation of multinucleon transfer
(MNT) processes employing the TDHF theory. To calculate transfer probabilities
for channels specified by the number of protons and neutrons included in
reaction products, a particle-number projection (PNP) method has been
developed. The PNP method is also used to calculate excitation energies of
reaction products. Combined use of the PNP method with a statistical model, we
can evaluate MNT cross sections taking account of effects of particle
evaporation. Using these methods, we evaluate MNT cross sections for
$^{40,48}$Ca+$^{124}$Sn, $^{40}$Ca+$^{208}$Pb, and $^{58}$Ni+$^{208}$Pb
reactions. From systematic analyses, we find that cross sections for channels
with a large reaction probability are in good agreement with experimental data.
However, the agreement becomes less accurate as the number of transferred
nucleons increases. Possible directions to improve the description are
discussed.

arXiv

researchmap

その他リンク： http://arxiv.org/pdf/1511.08322v1

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.92.024603

Web of Science

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society  

Single- and multi-nucleon transfer reactions, namely, 206Pb(18O,20O), 206Pb(18O,19O), 206Pb(18O,17O), 206Pb(18O,16O), 206Pb(18O,18N), 206Pb(18O,17N), 206Pb(18O,16N), 206Pb(18O,15N), 206Pb(18O,14N), 206Pb(18O,16C), 206Pb(18O,15C), 206Pb(18O,14C), 206Pb(18O,13C), 206Pb(18O,12C), 206Pb(18O,12B), 206Pb(18O,11B), 206Pb(18O,10B), 206Pb(18O,10Be), and 206Pb(18O,9Be), have been studied at an incident 18O energy of 139 MeV. The total kinetic energy loss (TKEL) spectrum and angular distribution of reaction products have been measured. The Q value and angle integrated cross sections are deduced. Angular distributions for the elastically scattered 18O particles are also measured. Fully microscopic time-dependent Hartree-Fock (TDHF) calculations, based on the independent single-nucleon transfer mode, have been carried out and are compared with experimental data of multinucleon transfer reactions. The TDHF calculations provide reasonable agreement with the experimental data for cases where one- and two-nucleon transfer is involved; the discrepancy is large for multinucleon transfer reactions. The effect of particle evaporation on the production cross sections has been studied. Inclusion of parti

DOI： 10.1103/PhysRevC.92.024603

researchmap

記述言語：日本語   出版者・発行元：一般社団法人日本物理学会  

DOI： 10.11316/jpsgaiyo.70.1.0_139

CiNii Books

researchmap

記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.1051/epjconf/20158600043

Web of Science

arXiv

researchmap

その他リンク： http://arxiv.org/pdf/1403.2862v1

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society  

Background: The time-dependent Hartree-Fock (TDHF) theory has been successful
in describing low-energy heavy ion collisions. Recently, we have shown that
multinucleon transfer processes can be reasonably described in the TDHF theory
combined with the particle-number projection technique. Purpose: In this work,
we propose a theoretical framework to analyze properties of reaction products
in TDHF calculations. Methods: TDHF calculation in three-dimensional Cartesian
grid representation combined with particle number projection method. Results:
We develop a theoretical framework to calculate expectation values of operators
in the TDHF wave function after collision with the particle-number projection.
To show how our method works in practice, the method is applied to
$^{24}$O+$^{16}$O collisions for two quantities, angular momentum and
excitation energy. The analyses revealed following features of the reaction:
The nucleon removal proceeds gently, leaving small values of angular momentum
and excitation energy in nucleon removed nuclei. Contrarily, nuclei receiving
nucleons show expectation values of angular momentum and excitation energy
which increase as the incident energy increases. Conclusions: We have developed
a formalism to analyze properties of fragment nuclei in the TDHF theory
combined with the particle-number projection technique. The method will be
useful for microscopic investigations of reaction mechanisms in low-energy
heavy ion collisions as well as for evaluating effects of particle evaporation
on multinucleon transfer cross sections.

DOI： 10.1103/PhysRevC.90.064614

arXiv

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.90.064614

Web of Science

researchmap

記述言語：英語   出版者・発行元：The Physical Society of Japan  

We theoretically investigate multinucleon transfer (MNT) processes in
$^{238}$U+$^{124}$Sn reaction at $E_\mathrm{lab}=5.7$ MeV/$A$ using the
time-dependent Hartree-Fock (TDHF) theory. For this reaction, measurements of
MNT processes have been reported, showing substantial MNT cross sections
accompanying more than ten protons. From the calculation, we find that the
amount of transferred nucleons depends much on the relative orientation between
the deformation axis of $^{238}$U and the relative vector connecting centers of
$^{238}$U and $^{124}$Sn nuclei. We find a formation of thick neck when the
$^{238}$U collides from its tip with $^{124}$Sn. However, the neck formation is
substantially suppressed when $^{238}$U collides from its side. We have found
that a large number of protons are transferred in the tip collision. This is
caused by the breaking of the neck and subsequent absorption of nucleons in the
neck region. We thus conclude that the measured MNT processes involving about
ten protons originate from the neck breaking dynamics in the tip collisions of
a deformed $^{238}$U nucleus.

DOI： 10.7566/JPSCP.6.030084

arXiv

researchmap

その他リンク： http://arxiv.org/pdf/1409.8612v1

記述言語：日本語  

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society ({APS})  

DOI： 10.1103/physrevc.90.064614

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society  

Multinucleon transfer processes in heavy-ion reactions at energies slightly
above the Coulomb barrier are investigated in a fully microscopic framework of
the time-dependent Hartree-Fock (TDHF) theory. Transfer probabilities are
calculated from the TDHF wave function after collision using the projection
operator method which has recently been proposed by Simenel (C. Simenel, Phys.
Rev. Lett. 105, 192701 (2010)). We show results of the TDHF calculations for
transfer cross sections of the reactions of $^{40,48}$Ca+$^{124}$Sn at
$E_{lab}=$ 170, 174 MeV, $^{40}$Ca+$^{208}$Pb at $E_{lab}=$ 235, 249 MeV, and
$^{58}$Ni+$^{208}$Pb at $E_{lab}=$ 328.4 MeV, for which measurements are
available. We find the transfer processes show different behaviors depending on
the $N/Z$ ratios of the projectile and the target, and the product of the
charge numbers, $Z_P Z_T$. When the projectile and the target have different
$N/Z$ ratios, fast transfer processes of a few nucleons towards the charge
equilibrium of the initial system occur in reactions at large impact
parameters. As the impact parameter decreases, a neck formation is responsible
for the transfer. A number of nucleons are transferred by the neck breaking
when two nuclei dissociate, leading to transfers of protons and neutrons in the
same direction. Comparing cross sections by theory and measurements, we find
the TDHF theory describes the transfer cross sections of a few nucleons
reasonably. As the number of transferred nucleons increases, the agreement
becomes less accurate. The TDHF calculation overestimates transfer cross
sections accompanying a large number of neutrons when more than one proton are
transferred. Comparing our results with those by other theories, we find the
TDHF calculations give qualitatively similar results to those of direct
reaction models such as GRAZING and Complex WKB.

DOI： 10.1103/PhysRevC.88.014614

arXiv

researchmap

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevC.88.014614

Web of Science

researchmap

記述言語：日本語  

researchmap

記述言語：日本語  

researchmap

記述言語：英語   掲載種別：学位論文（修士）  

Multi-nucleon transfer reaction is investigated employing the time-dependent Hartree-Fock (TDHF) theory. In the framework of the TDHF theory, a nucleus-nucleus collision is described microscopically with time-dependent single-particle orbitals. Each nucleon moves under the time-dependent mean-field potential which comes from all the nucleons belonging to the two colliding nuclei. The final many-body wave function after collision may be determined uniquely for a given initial condition.<br />
<br />
To calculate nucleon transfer cross sections, it is necessary to evaluate nucleon transfer probabilities for each impact parameter and incident energy. In the field of atomic physics, the method to evaluate electron transfer probabilities for the collision between a highly charged ion and an atom has been proposed. However, this method requires 2A times calculations of the determinants (here, A is the total number of particles of the system) to obtain all of possible transfer probabilities. Hence, it is not possible to apply the method to heavy-ion collision where more than a hundred of nucleons participate in the transfer processes because of computational difficulty. Recently, a useful method ha

researchmap

記述言語：日本語   出版者・発行元：素粒子論グループ 素粒子論研究 編集部  

時間依存Hartree-Fock法(TDHF)を用いて、核子移行反応の断面積を調べる方法について考察を行う。このためには、ある入射パラメータの衝突に対し、移行核子数毎の反応確率を求めることが必要となる。従来、多価イオン衝突で起こる電子移行反応に対し、反応確率を計算する方法が知られている。一方、昨年、Simenelにより粒子数射影演算子を用いた方法が提案された。両者が等価であることは、解析的に示すことができる。本稿では、Skyrme相互作用SLy5を用いた^<40>Ca+^<124>Sn原子核衝突のTDHF計算によって得られた核子移行反応確率及び核子移行反応断面積の計算結果を示し、実験値との比較を行うことにより、TDHFの多核子移行反応への適用可能性について述べる。

DOI： 10.24532/soken.119.4B_E155

CiNii Books

researchmap

記述言語：日本語   掲載種別：記事・総説・解説・論説等（学術雑誌）  

本稿では、第10回日本物理学会若手奨励賞（理論核物理領域）の受賞論文【K. Sekizawa and K. Yabana: Phys. Rev. C 88,(2013) 014614】に報告した研究成果について解説します。

researchmap

記述言語：英語  

DOI： 10.1103/PhysRevC.93.029902

Web of Science

researchmap

記述言語：日本語   出版者・発行元：一般社団法人日本物理学会  

CiNii Books

researchmap

記述言語：日本語   出版者・発行元：一般社団法人日本物理学会  

CiNii Books

researchmap

記述言語：日本語   出版者・発行元：一般社団法人日本物理学会  

CiNii Books

researchmap

記述言語：日本語   出版者・発行元：一般社団法人日本物理学会  

CiNii Books

researchmap

記述言語：日本語   出版者・発行元：一般社団法人日本物理学会  

CiNii Books

researchmap

記述言語：日本語   出版者・発行元：一般社団法人日本物理学会  

CiNii Books

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：YITP, Kyoto, Japan  

researchmap

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：白浜荘，滋賀県高島市  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：YITP, Kyoto, Japan  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：RIKEN, Wako, Saitama, Japan  

researchmap

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：京都産業大学，京都府京都市  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：RIKEN, Wako, Saitama, Japan  

researchmap

記述言語：日本語   会議種別：ポスター発表  

開催地：イイノカンファレンスセンター，東京都千代田区  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：RIKEN, Wako, Saitama, Japan  

researchmap

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：高知大学朝倉キャンパス  

researchmap

記述言語：日本語   会議種別：ポスター発表  

開催地：ホテルたつき，愛知県蒲郡市  

researchmap

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：広島大学東広島キャンパス  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Japan Atomic Energy Agency, Tokai, Japan  

researchmap

記述言語：英語   会議種別：ポスター発表  

開催地：RIKEN, Wako, Saitama, Japan  

researchmap

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：ホテルたつき，愛知県蒲郡市  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：ECT*, Trento, Italy  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：ECT*, Trento, Italy  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：RIKEN, Wako, Saitama, Japan  

researchmap

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：自然科学研究機構 分子科学研究所，愛知県岡崎市  

researchmap

記述言語：日本語   会議種別：ポスター発表  

開催地：タイム24ビル，東京都江東区  

researchmap

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：筑波大学大学会館 国際会議室, 茨城県つくば市  

researchmap

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：東海大学湘南キャンパス  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Inter University Accelerator Centre (IUAC), New Delhi, India  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Waikoloa, Hawaii, USA  

researchmap

記述言語：英語   会議種別：ポスター発表  

開催地：ITO International Research Center, Tokyo, Japan  

researchmap

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：早稲田大学早稲田キャンパス  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：筑波大学  

researchmap

記述言語：日本語   会議種別：口頭発表（招待・特別）  

開催地：大阪市立大学杉本キャンパス  

実験・理論核物理領域合同シンポジウム"重イオン深部非弾性散乱の基礎と応用"における招待講演

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：University of Warsaw, Warsaw, Poland  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：ECT*, Trento, Italy  

researchmap

記述言語：日本語   会議種別：ポスター発表  

開催地：コクヨホール，東京都港区  

researchmap

記述言語：日本語   会議種別：口頭発表（招待・特別）  

開催地：東北学院大学泉キャンパス  

第10回（2016年）日本物理学会若手奨励賞（第17回核理論新人論文賞）受賞記念講演

researchmap

記述言語：日本語   会議種別：ポスター発表  

開催地：日本科学未来館，東京都江東区  

researchmap

記述言語：英語   会議種別：ポスター発表  

開催地：Zakopane, Poland  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Toki Messe, Niigata, Japan  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Australian National University, Canberra, Australia  

researchmap

記述言語：日本語   会議種別：ポスター発表  

開催地：コクヨホール，東京都港区  

researchmap

記述言語：日本語   会議種別：ポスター発表  

開催地：コクヨホール，東京都港区  

researchmap

記述言語：英語   会議種別：口頭発表（招待・特別）  

開催地：Hobart, Tasmania, Australia  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Adelaide Convention Centre, Australia  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Kazimierz Dolny, Poland  

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：The University of Warsaw Library, Warsaw, Poland  

researchmap

記述言語：英語   会議種別：口頭発表（招待・特別）  

開催地：RIKEN, Wako, Saitama, Japan  

The RIBF Users Group Thesis Awards 2017 Award Lecture

researchmap

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：理化学研究所・和光キャンパス  

researchmap

記述言語：日本語   会議種別：口頭発表（招待・特別）  

開催地：東京理科大学野田キャンパス  

2017年度（第12回）中村誠太郎賞受賞記念講演

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Hilton Waikoloa Village, Hawaii, USA  

Time-dependent Hartree-Fock (TDHF) theory (or TDEDF, TDDFT) has shown remarkable successes in describing complex nuclear dynamics microscopically from nucleonic degrees of freedom. However, the well-known drawback is that the width of fragment mass distribution in deep-inelastic reactions is severely underestimated within the TDHF approach. Here we show, that the description can be dramatically improved by including one-body fluctuation, based on a prescription of Balian and Vénéroni, which may be comparable to TDRPA. In this contribution, the case of deep-inelastic 58,60Ni+60Ni reactions will be presented, in the light of detailed experimental/theoretical analyses.

researchmap

記述言語：日本語   会議種別：口頭発表（招待・特別）  

開催地：九州大学伊都キャンパス  

researchmap

記述言語：英語   会議種別：口頭発表（招待・特別）  

開催地：Tohoku University, Sendai, Miyagi, Japan  

researchmap

記述言語：英語   会議種別：口頭発表（招待・特別）  

開催地：Hilton Waikoloa Village, Hawaii, USA  

In spite of the known great importance of the pairing in nuclear structure studies, the effect of pairing on nuclear dynamics has rarely been investigated to date. We attack this problem by applying a microscopic dynamic approach, Time-Dependent Density Functional Theory (TDDFT) extended for superfluid systems with local treatment of pairing, known as Time-Dependent Superfluid Local Density Approximation (TDSLDA) (see, e.g., [1]). Its application started only very recently with top-tier supercomputers. In this talk, I will first digest the theoretical framework of TDSLDA and its applications to a variety of nuclear dynamics: giant resonances [2,3], fission [4,5], heavy-ion reactions [6], and superfluid vortices in the inner crust of neutron stars [7]. Especially, I will put special focus on dynamics of quantized vortices in the presence of nuclear impurities [7], which govern vortex pinning mechanism at the heart of the pulsar glitch phenomenon, a sudden change of the rotational frequency of a neutron star (see, e.g., [8]). References: [1] A. Bulgac, Ann. Rev. Nucl. Part. Sci. 63, 97 (2013). [2] I. Stetcu, C.A. Bertulani, A. Bulgac, P. Magierski, and K. J. Roche, Phys. Rev. Lett.

researchmap

記述言語：英語   会議種別：口頭発表（一般）  

開催地：新潟県佐渡市  

researchmap

受賞区分：国際学会・会議・シンポジウム等の賞  受賞国：オーストラリア連邦

researchmap

受賞区分：国内学会・会議・シンポジウム等の賞  受賞国：日本国

researchmap

受賞国：日本国

researchmap

受賞国：フランス共和国

researchmap

受賞国：日本国

researchmap

受賞国：フランス共和国

researchmap

対象： 大学院生,　研究者

種別：セミナー・ワークショップ

ワルシャワ大学において「Time-Dependent Density Functional Theory for Low-Energy Nuclear Reactions」という題目で，自身の最新の研究に関するセミナーを行った．

researchmap

対象： 大学院生,　研究者

種別：セミナー・ワークショップ

ワシントン大学において「Microscopic Calculations of Vortex-Nucleus Interaction for Neutron Star Glitches」という題目で，自身の最新の研究に関するセミナーを行った．

researchmap

対象： 大学院生,　研究者

種別：セミナー・ワークショップ

筑波大学において「TDSLDA calculations for vortex-nucleus interaction」という題目で，自身の最新の研究に関するセミナーを行った．

researchmap

対象： 大学院生,　研究者

種別：セミナー・ワークショップ

レニャーロ国立研究所において「Multinucleon transfer and quasifission processes in time-dependent Hartree-Fock theory」という題目で，自身の最新の研究に関するセミナーを行った．

researchmap

対象： 大学院生,　研究者

種別：セミナー・ワークショップ

ワルシャワ工科大学において「Time-dependent density functional theory for low-energy heavy ion reactions」という題目で，自身の最新の研究に関するセミナーを行った．

researchmap

対象： 大学院生,　研究者

種別：セミナー・ワークショップ

オーストラリア国立大学において「Time-dependent Hartree-Fock calculations for multi-nucleon transfer and quasi-fission processes」という題目で，自身の最新の研究に関するセミナーを行った．

researchmap

対象： 大学院生,　研究者

種別：セミナー・ワークショップ

東北大学において「Time-dependent Hartree-Fock calculations for multinucleon transfer processes」という題目で，自身の最新の研究に関するセミナーを行った．

researchmap

対象： 大学院生,　研究者

種別：セミナー・ワークショップ

九州大学において「TDHF計算による多核子移行反応の研究」という題目で，自身の最新の研究に関するセミナーを行った．

researchmap

対象： 大学院生,　研究者

種別：セミナー・ワークショップ

レニャーロ国立研究所において「Time-dependent Hartree-Fock calculations for multinucleon transfer processes」という題目で，自身の最新の研究に関するセミナーを行った．

researchmap