Publishing type：Research paper (scientific journal)  

DOI： 10.1103/g7yp-d6yq

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Publishing type：Research paper (scientific journal)  

DOI： 10.1103/zz3y-22fh

arXiv

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Publishing type：Research paper (scientific journal)  

DOI： 10.1103/PhysRevC.109.065804

arXiv

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Publishing type：Research paper (scientific journal)  

DOI： 10.1103/PhysRevC.105.064602

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

DOI： 10.1103/PhysRevC.105.045807

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

DOI： 10.1103/PhysRevC.105.044611

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Publishing type：Research paper (scientific journal)  

DOI： 10.1103/PhysRevA.105.013304

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Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.physletb.2020.135626

Scopus

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Publishing type：Research paper (scientific journal)  

DOI： 10.5506/APhysPolB.51.605

Scopus

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

DOI： 10.1103/PhysRevC.99.051602

Scopus

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

DOI： 10.1103/PhysRevLett.120.253002

Scopus

arXiv

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

DOI： 10.1103/PhysRevC.97.034603

Scopus

arXiv

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

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Language：English   Publishing type：Research paper (international conference proceedings)  

DOI： 10.5506/APhysPolB.49.281

Scopus

arXiv

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

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

DOI： 10.1103/PhysRevC.96.041601

Web of Science

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

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

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

DOI： 10.1103/PhysRevLett.119.042501

Web of Science

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

DOI： 10.1103/PhysRevC.96.014615

Web of Science

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Language：English  

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

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Other Link： http://arxiv.org/pdf/1702.00069v1

Language：English   Publishing type：Research paper (international conference proceedings)  

DOI： 10.1051/epjconf/201716300051

Web of Science

arXiv

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Other Link： http://arxiv.org/pdf/1705.04902v1

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

DOI： 10.5506/APhysPolBSupp.10.225

Scopus

arXiv

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Other Link： http://arxiv.org/pdf/1611.10177v3

Language：English   Publishing type：Research paper (international conference proceedings)  

DOI： 10.5506/APhysPolBSupp.10.225

Web of Science

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

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

DOI： 10.1103/PhysRevLett.117.232701

Web of Science

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

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

DOI： 10.1103/PhysRevC.93.054616

Web of Science

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Language：English   Publishing type：Research paper (international conference proceedings)  

DOI： 10.7566/JPSCP.14.010807

Web of Science

arXiv

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Other Link： http://arxiv.org/pdf/1609.03865v1

Language：English  

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Language：English  

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Language：Japanese   Publisher：The Physical Society of Japan (JPS)  

DOI： 10.11316/jpsgaiyo.71.1.0_218

CiNii Books

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

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

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Other Link： http://arxiv.org/pdf/1511.08322v1

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

DOI： 10.1103/PhysRevC.92.024603

Web of Science

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

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Language：Japanese   Publisher：The Physical Society of Japan (JPS)  

DOI： 10.11316/jpsgaiyo.70.1.0_139

CiNii Books

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Language：English   Publishing type：Research paper (international conference proceedings)  

DOI： 10.1051/epjconf/20158600043

Web of Science

arXiv

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Other Link： http://arxiv.org/pdf/1403.2862v1

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

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

DOI： 10.1103/PhysRevC.90.064614

Web of Science

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Language：English   Publisher：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

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Other Link： http://arxiv.org/pdf/1409.8612v1

Language：Japanese  

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Physical Society ({APS})  

DOI： 10.1103/physrevc.90.064614

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

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

DOI： 10.1103/PhysRevC.88.014614

Web of Science

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Language：Japanese  

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Language：Japanese  

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Language：English   Publishing type：Master’s thesis  

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

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Language：Japanese   Publisher：Soryushiron Kenkyu Editorial Office  

DOI： 10.24532/soken.119.4B_E155

CiNii Books

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Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

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Language：English  

DOI： 10.1103/PhysRevC.93.029902

Web of Science

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Language：Japanese   Publisher：The Physical Society of Japan (JPS)  

CiNii Books

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Language：Japanese   Publisher：The Physical Society of Japan (JPS)  

CiNii Books

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Language：Japanese   Publisher：The Physical Society of Japan (JPS)  

CiNii Books

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Language：Japanese   Publisher：The Physical Society of Japan (JPS)  

CiNii Books

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Language：Japanese   Publisher：The Physical Society of Japan (JPS)  

CiNii Books

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Language：Japanese   Publisher：The Physical Society of Japan (JPS)  

CiNii Books

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Language：English   Presentation type：Oral presentation (general)  

Venue：YITP, Kyoto, Japan  

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Language：Japanese   Presentation type：Oral presentation (general)  

Venue：Shiga, Japan  

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Language：English   Presentation type：Oral presentation (general)  

Venue：YITP, Kyoto, Japan  

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Language：English   Presentation type：Oral presentation (general)  

Venue：RIKEN, Wako, Saitama, Japan  

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Language：Japanese   Presentation type：Oral presentation (general)  

Venue：Kyoto Sangyo University, Kyoto, Japan  

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Language：English   Presentation type：Oral presentation (general)  

Venue：RIKEN, Wako, Saitama, Japan  

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Language：Japanese   Presentation type：Poster presentation  

Venue：IINO Conference Center, Tokyo, Japan  

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Language：English   Presentation type：Oral presentation (general)  

Venue：RIKEN, Wako, Saitama, Japan  

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Language：Japanese   Presentation type：Oral presentation (general)  

Venue：Kochi University, Kochi, Japan  

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Language：Japanese   Presentation type：Poster presentation  

Venue：Aichi, Japan  

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Language：Japanese   Presentation type：Oral presentation (general)  

Venue：Hiroshima University, Hiroshima, Japan  

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Language：English   Presentation type：Oral presentation (general)  

Venue：Japan Atomic Energy Agency, Tokai, Japan  

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Language：English   Presentation type：Poster presentation  

Venue：RIKEN, Wako, Saitama, Japan  

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Language：Japanese   Presentation type：Oral presentation (general)  

Venue：Aichi, Japan  

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Language：English   Presentation type：Oral presentation (general)  

Venue：ECT*, Trento, Italy  

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Language：English   Presentation type：Oral presentation (general)  

Venue：ECT*, Trento, Italy  

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Language：English   Presentation type：Oral presentation (general)  

Venue：RIKEN, Wako, Saitama, Japan  

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Language：Japanese   Presentation type：Oral presentation (general)  

Venue：IMS-NINS, Okayama, Aichi, Japan  

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Language：Japanese   Presentation type：Poster presentation  

Venue：TIME24 Building, Tokyo, Japan  

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Language：Japanese   Presentation type：Oral presentation (general)  

Venue：University Hall, Tsukuba, Japan  

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Language：Japanese   Presentation type：Oral presentation (general)  

Venue：Tokai University, Kanagawa, Japan  

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Language：English   Presentation type：Oral presentation (general)  

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

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Language：English   Presentation type：Oral presentation (general)  

Venue：Waikoloa, Hawaii, USA  

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Language：English   Presentation type：Poster presentation  

Venue：ITO International Research Center, Tokyo, Japan  

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Language：Japanese   Presentation type：Oral presentation (general)  

Venue：Waseda University, Tokyo, Japan  

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Language：English   Presentation type：Oral presentation (general)  

Venue：筑波大学  

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Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：Osaka City University, Osaka, Japan  

An invited talk in a Symposium on "Basics and Applications of Heavy-Ion Deep Inelastic Scattering"

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Language：English   Presentation type：Oral presentation (general)  

Venue：University of Warsaw, Warsaw, Poland  

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Language：English   Presentation type：Oral presentation (general)  

Venue：ECT*, Trento, Italy  

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Language：Japanese   Presentation type：Poster presentation  

Venue：KOKUYO Hole, Tokyo, Japan  

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Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：Tohoku Gakuin University, Sendai, Miyagi, Japan  

The 10th Young Scientist Award of the Physical Society of Japan Award Lecture

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Language：Japanese   Presentation type：Poster presentation  

Venue：National Museum of Emerging Science and Innovation, Tokyo, Japan  

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Language：English   Presentation type：Poster presentation  

Venue：Zakopane, Poland  

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Language：English   Presentation type：Oral presentation (general)  

Venue：Toki Messe, Niigata, Japan  

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Language：English   Presentation type：Oral presentation (general)  

Venue：Australian National University, Canberra, Australia  

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Language：Japanese   Presentation type：Poster presentation  

Venue：KOKUYO Hole, Tokyo, Japan  

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Language：Japanese   Presentation type：Poster presentation  

Venue：KOKUYO Hole, Tokyo, Japan  

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Language：English   Presentation type：Oral presentation (invited, special)  

Venue：Hobart, Tasmania, Australia  

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Language：English   Presentation type：Oral presentation (general)  

Venue：Adelaide Convention Centre, Australia  

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Language：English   Presentation type：Oral presentation (general)  

Venue：Kazimierz Dolny, Poland  

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Language：English   Presentation type：Oral presentation (general)  

Venue：The University of Warsaw Library, Warsaw, Poland  

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Language：English   Presentation type：Oral presentation (invited, special)  

Venue：RIKEN, Wako, Saitama, Japan  

The RIBF Users Group Thesis Awards 2017 Award Lecture

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Language：Japanese   Presentation type：Oral presentation (general)  

Venue：理化学研究所・和光キャンパス  

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Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：Tokyo University of Science, Noda, Chiba, Japan  

The 12th (2017) Seitaro Nakamura Prize Award Lecture

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Language：English   Presentation type：Oral presentation (general)  

Venue：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.

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Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：Kyushu University, Fukuoka, Japan  

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Language：English   Presentation type：Oral presentation (invited, special)  

Venue：Tohoku University, Sendai, Miyagi, Japan  

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Language：English   Presentation type：Oral presentation (invited, special)  

Venue：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.

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Language：English   Presentation type：Oral presentation (general)  

Venue：新潟県佐渡市  

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Award type：Award from international society, conference, symposium, etc.  Country：Australia

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Award type：Award from Japanese society, conference, symposium, etc.  Country：Japan

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Country：Japan

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Country：France

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Country：Japan

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Country：France

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Audience： Graduate students,　Researchesrs

Type：Seminar, workshop

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Audience： Graduate students,　Researchesrs

Type：Seminar, workshop

researchmap

Audience： Graduate students,　Researchesrs

Type：Seminar, workshop

researchmap

Audience： Graduate students,　Researchesrs

Type：Seminar, workshop

researchmap

Audience： Graduate students,　Researchesrs

Type：Seminar, workshop

researchmap

Audience： Graduate students,　Researchesrs

Type：Seminar, workshop

researchmap

Audience： Graduate students,　Researchesrs

Type：Seminar, workshop

researchmap

Audience： Graduate students,　Researchesrs

Type：Seminar, workshop

researchmap

Audience： Graduate students,　Researchesrs

Type：Seminar, workshop

researchmap