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EBATA Shuichiro
| Material Science Division | Assistant Professor |
| Physics |
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■ Paper- Measurement of activation cross section of alpha-particle induced nuclear reactions on dysprosium
S. Takács; F. Ditrói; Z. Szűcs; M. Aikawa; H. Haba; S. Usuda; S. Ebata
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Jun. 2025, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1016/j.nimb.2025.165670
DOI ID：10.1016/j.nimb.2025.165670, ORCID：179986675 - Global analysis of the nonuniformity of nucleon density distributions
Shuichiro Ebata; Wataru Horiuchi
Physical Review C, Volume：111, Number：1, First page：014313, Last page：014313, Jan. 2025, [Reviewed]
Background: Saturation of nuclear density is a fundamental property of atomic
nuclei but in reality, the nuclear internal density distribution is not
uniform, e.g., some nuclei are known to have the so-called bubble structure, in
which the central density is depressed.
Purpose: We aim to unveil the emergent mechanism of the non-uniformity of the
nucleon density distributions for whole nuclear mass regions, not only for a
typical bubble structure.
Method: We systematically investigate the nucleon density distributions using
the Skyrme Hartree-Fock plus Bardeen-Cooper-Schrieffer calculation represented
in the three-dimensional Cartesian coordinate space. The ground states of 1,389
even-even nuclei are generated. To quantify the nonuniformity of these density
distributions, a ``generalized bubble parameter" is introduced.
Results: We find that the bubble structure appears around the magic numbers,
which correspond to the regions where the s orbit appears near the Fermi
surface. The nuclear deformation and pairing correlations strongly affect the
occupation probability, but the robust bubble structure of a medium mass
nucleus, $^{100}$Sn, is found. We confirm that the Coulomb force enhances the
bubble degree in the superheavy region. The nuclear non-uniformity is further
generalized by the ``multi-layered" bubble structure, which exhibits some
density depression in the internal regions of the density distributions.
Conclusion: The non-uniformity of the internal density distribution occurs
due to the deficiency of the specific single-particle orbits: the nodal $s$,
$p$, and $d$ orbits. This is certainly reflected in the density distribution
near the nuclear surface, which can be deduced from proton-elastic scattering.
Scientific journal
DOI：https://doi.org/10.1103/PhysRevC.111.014313
DOI ID：10.1103/PhysRevC.111.014313, ORCID：175358530, arXiv ID：arXiv:2412.18269 - Mixing of isoscalar and isovector characteristics in the low-energy dipole mode
Tsunenori Inakura; Shuichiro Ebata
Frontiers in Physics, Volume：12, Dec. 2024, [Reviewed]
Frontiers Media SA, Scientific journal
DOI：https://doi.org/10.3389/fphy.2024.1487954
DOI ID：10.3389/fphy.2024.1487954, ISSN：2296-424X, ORCID：174440633 - Isomer production studied with simultaneous decay curve analysis for alpha-particle induced reactions on natural platinum up to 29 MeV
Naohiko Otuka; Sándor Takács; Masayuki Aikawa; Shuichiro Ebata; Hiromitsu Haba
The European Physical Journal A, Volume：60, Number：9, Sep. 2024, [Reviewed]
Springer Science and Business Media LLC, Scientific journal
DOI：https://doi.org/10.1140/epja/s10050-024-01383-7
DOI ID：10.1140/epja/s10050-024-01383-7, eISSN：1434-601X - Activation cross sections of alpha-particle-induced reactions on natural rhenium up to 50 MeV
Damdinsuren Gantumur; Masayuki Aikawa; Tegshjargal Khishigjargal; Erdene Norov; Shuichiro Ebata; Hiromitsu Haba; Sándor Takács; Ferenc Ditrói; Zoltán Szűcs
Applied Radiation and Isotopes, First page：111486, Last page：111486, Aug. 2024, [Reviewed]
Elsevier BV, Scientific journal
DOI：https://doi.org/10.1016/j.apradiso.2024.111486
DOI ID：10.1016/j.apradiso.2024.111486, ISSN：0969-8043 - Activation cross sections of α-particle-induced reactions on scandium in the energy range of 22–51 MeV
Masayuki Aikawa; Shuichiro Ebata; Hiromitsu Haba; Sándor Takács; Ferenc Ditrói; Zoltán Szűcs
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, May 2024, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1016/j.nimb.2024.165315
DOI ID：10.1016/j.nimb.2024.165315, ORCID：154752421 - Construction of density-dependent α-nucleon interaction to describe α-nucleus scattering
Takenori Furumoto; Kohsuke Tsubakihara; Shuichiro Ebata; Wataru Horiuchi
EPJ Web of Conferences, Volume：292, First page：02002, Last page：02002, Mar. 2024, [Reviewed]
We provide a global density-dependent α-nucleon (DD-αN) interaction to construct the α-nucleus optical potential in a wide range of incident energies. The α-nucleus potential based on the folding model with the present DD-αN interaction reproduces the experimental data up to backward angles using the point-nucleon density obtained by the mean-field model. The present DD-αN interaction is based on the phenomenological optical potential to reproduce the p + 4He elastic scattering at the incident energies at 12.04–1000 MeV. Namely, the α-nucleon system is considered an elementary process. The density dependence (medium effect) of the DD-αN interaction is phenomenologically added to reproduce the α elastic scatterings by the 16O, 40Ca, 58Ni, 90Zr and 208Pb targets at E/A = 10–342.5 MeV. The total reaction cross sections are also compared with the experimental data.
EDP Sciences, Scientific journal
DOI：https://doi.org/10.1051/epjconf/202429202002
DOI ID：10.1051/epjconf/202429202002, eISSN：2100-014X - Evolution of the giant monopole resonance with triaxial deformation
Kouhei Washiyama; Shuichiro Ebata; Kenichi Yoshida
Phys.Rev.C, Volume：109, Number：2, First page：024317, Last page：024317, Feb. 2024, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1103/PhysRevC.109.024317
DOI ID：10.1103/PhysRevC.109.024317, ORCID：153308665, arXiv ID：arXiv:2311.18317 - Global density-dependent α-nucleon interaction for α-nucleus elastic scattering
T Furumoto; K Tsubakihara; S Ebata; W Horiuchi
Progress of Theoretical and Experimental Physics, Dec. 2023, [Reviewed]
Abstract
We provide a global density-dependent 4He-nucleon (DD-αN) interaction to construct the α-nucleus optical model potential (OMP) in a wide range of incident energies. The global parametrization for the DD-αN interaction is obtained based on the proton-4He OMP which reproduces the elastic scattering cross-section data very well in the incident energies of 12.04–500 MeV per nucleon. We derive the α-nucleus potential by a folding procedure with the point-nucleon density obtained by a microscopic mean-field model using the present DD-αN interaction. The density dependence of the DD-αN interaction is fixed phenomenologically to reproduce the α-nucleus elastic scattering cross-section data by the 16O, 40Ca, 58Ni, 90Zr, and 208Pb targets at E/ A = 10–342.5 MeV. We also show the total reaction cross sections, which are helpful in fixing one free parameter, the renormalization factor for the imaginary part of the α-nucleus potential. Lastly, we show some examples, which clearly demonstrate the validity and power of the present DD-αN approach.
Oxford University Press (OUP), Scientific journal
DOI：https://doi.org/10.1093/ptep/ptad148
DOI ID：10.1093/ptep/ptad148, eISSN：2050-3911, ORCID：150332147 - Activation cross sections of deuteron-induced reactions on natural rhenium up to 23 MeV
Masayuki Aikawa; Yutaka Toyoeda; Damdinsuren Gantumur; Naoyuki Ukon; Shuichiro Ebata; Hiromitsu Haba; Sándor Takács; Ferenc Ditrói; Zoltán Szűcs
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume：543, First page：165093, Last page：165093, Oct. 2023, [Reviewed]
Elsevier BV, Scientific journal
DOI：https://doi.org/10.1016/j.nimb.2023.165093
DOI ID：10.1016/j.nimb.2023.165093, ISSN：0168-583X, ORCID：139779708 - Simple model for a study of $\Lambda$ hypernuclei in medium and heavy mass regions
Naotaka Yoshinaga; Umeya, A.; Ebata, S.; Nojima, T.; Ito, S.
Phys.Scripta, Volume：98, Number：8, First page：085309, Last page：085309, Jul. 2023, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1088/1402-4896/ace565
DOI ID：10.1088/1402-4896/ace565, ORCID：142389129 - The difference between charge polarizations of fission fragments deduced by the static theoretical model and in the current data library
Shuichiro Ebata; Shin Okumura; Chikako Ishizuka; Satoshi Chiba
International Journal of Modern Physics E, Jun. 2023, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1142/S0218301323500301
DOI ID：10.1142/S0218301323500301, ORCID：138994068 - Activation cross sections of alpha-particle-induced reactions on natural lanthanum up to 50 MeV
Shuichiro Ebata; Masayuki Aikawa; Damdinsuren Gantumur; Hiromitsu Haba
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume：530, First page：18, Last page：22, Nov. 2022, [Reviewed]
Elsevier BV, Scientific journal
DOI：https://doi.org/10.1016/j.nimb.2022.09.002
DOI ID：10.1016/j.nimb.2022.09.002, ISSN：0168-583X, ORCID：142389147 - Energy competition and pairing effect for the fission path with a microscopic model
Fujio, Kazuki; Ebata, Shuichiro; Inakura, Tsunenori; Ishizuka, Chikako; Chiba, Satoshi
Front.in Phys., Volume：10, First page：986488, Last page：986488, Sep. 2022, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.3389/fphy.2022.986488
DOI ID：10.3389/fphy.2022.986488, eISSN：2296-424X, ORCID：142389264 - Production cross sections of 52Mn in alpha-particle-induced reactions on natural vanadium
Gantumur, D.; Aikawa, M.; Khishigjargal, T.; Norov, E.; Ebata, S.; Haba, H.
Applied Radiation and Isotopes, Volume：184, 2022, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1016/j.apradiso.2022.110204
DOI ID：10.1016/j.apradiso.2022.110204, ISSN：1872-9800, ORCID：113265812, SCOPUS ID：85127084553 - Equations of State for Hadronic Matter and Mass-Radius Relations of Neutron Stars with Strong Magnetic Fields
Chinatsu Watanabe; Naotaka Yoshinaga; Shuichiro Ebata
UNIVERSE, Volume：8, Number：1, Jan. 2022, [Reviewed]
Neutron star is an important object for us to verify the equation of state of hadronic matter. For a specific choice of equations of state, mass and radius of a neutron star are determined, for which there are constraints from observations. According to some previous studies, since the strong magnetic field acts as a repulsive force, there is a possibility that neutron stars with strong magnetic fields may have relatively heavier masses than other non-magnetized neutron stars. In this paper, the structure of a neutron star with a strong internal magnetic field is investigated by changing its internal functional form to see how much the neutron star can be massive and also how radius of a neutron star can be within a certain range.
MDPI, English, Scientific journal
DOI：https://doi.org/10.3390/universe8010048
DOI ID：10.3390/universe8010048, eISSN：2218-1997, ORCID：106419782, Web of Science ID：WOS:000747545300001 - Activation cross sections of deuteron-induced reactions on praseodymium up to 24 MeV
Masayuki Aikawa; Takuto Maehashi; Dagvadorj Ichinkhorloo; Shuichiro Ebata; Yukiko Komori; Hiromitsu Haba
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Volume：498, First page：23, Last page：26, Jul. 2021, [Reviewed]
We measured activation cross sections of deuteron-induced reactions on 141Pr. The production cross sections of 141,140Nd, 142Pr, and 139Ce were determined up to 24 MeV using the stacked-foil activation technique and highresolution gamma-ray spectrometry. The derived cross sections were compared with experimental data studied earlier and theoretical model calculations. Our results are consistent with part of the previous data.
ELSEVIER, English, Scientific journal
DOI：https://doi.org/10.1016/j.nimb.2021.04.011
DOI ID：10.1016/j.nimb.2021.04.011, ISSN：0168-583X, eISSN：1872-9584, ORCID：113265770, SCOPUS ID：85105694844, Web of Science ID：WOS:000653766400004 - Isoscalar transitions in heavy nuclei and a cluster structure
M. Ito; M. Nakao; R. Nakamoto; T. Okuno; S. Ebata
AIP Conference Proceedings, Volume：2319, Feb. 2021, [Reviewed]
We investigate the energy distribution of the isoscalar monopole and dipole transitions in the heavy systems, such as 44Ti and Te isotopes. The macroscopic a cluster models with a+40Ca and a+Sn are applied to 44Ti and Sn isotopes, respectively. The present calculation shows that the monopole and dipole strengths are strongly enhanced by the excitation in the the a cluster degrees of freedom. The discrete and sharp strength is generated by the a cluster excitation at the excitation energy much lower than the energy for the single nucleon excitation inside of the uniform mean field potential.
American Institute of Physics Inc., English, International conference proceedings
DOI：https://doi.org/10.1063/5.0037182
DOI ID：10.1063/5.0037182, ISSN：1551-7616, SCOPUS ID：85101028717 - Coulomb shift in mirror cluster systems
M. Nakao; R. Nakamoto; T. Okuno; S. Ebata; M. Ito
AIP Conference Proceedings, Volume：2319, Feb. 2021, [Reviewed]
The Coulomb shift in the mirror systems of a +14C in 18O and a+14O in 18Ne is investigated by applying the orthogonality condition model (OCM). The result of OCM predicts the reduction of the excitation energies of the higher O+ states in the proton-rich nucleus of 18Ne in comparison to the energies in the neutron-rich 18O nucleus. This reduced excitation energy is similar to the phenomenon known as the Thomas-Ehrman shift, which means the lower shift in the excitation energy of the s-wave single particle orbit around the 16O core.
American Institute of Physics Inc., English, International conference proceedings
DOI：https://doi.org/10.1063/5.0037183
DOI ID：10.1063/5.0037183, ISSN：1551-7616, SCOPUS ID：85100969776 - Isoscalar transitions and α cluster structures in heavy nuclei
Ito, M.; Nakamoto, R.; Nakao, M.; Okuno, T.; Ebata, S.
European Physical Journal A, Volume：57, Number：2, 2021, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1140/epja/s10050-021-00372-4
DOI ID：10.1140/epja/s10050-021-00372-4, ISSN：1434-601X, ORCID：113265814, SCOPUS ID：85101383053 - Studies on Nuclear Structure and Nuclear Dynamics Using Cb-TDHFB
Shuichiro Ebata
FRONTIERS IN PHYSICS, Volume：8, Apr. 2020, [Reviewed]
In this paper, we briefly review the studies on nuclear structure and nuclear dynamics using the Canonical-basis time-dependent Hartree-Fock-Bogoliubov (Cb-TDHFB) theory which is one of the time-dependent mean-field models which deal with nuclear pairing correlation. At first, after a brief introduction of the time-dependent mean-field models, we explain the derivation and the properties of Cb-TDHFB equations. Next, we introduce the methods to study the nuclear linear responses and to simulate the nuclear collision in terms of the time-dependent mean-field models. Then, we display parts of the results obtained by using the time-dependent methods; Strength functions of electric dipole (E1) excitation mode of Yb-172, Systematic study of low-energy E1 mode, and Comparison of the simulations of the fusion reactions using time-dependent mean-field models with and without pairing correlation. Finally, we summarize the Cb-TDHFB activities and discuss its perspectives.
FRONTIERS MEDIA SA, English, Scientific journal
DOI：https://doi.org/10.3389/fphy.2020.00102
DOI ID：10.3389/fphy.2020.00102, ISSN：2296-424X, ORCID：113265813, SCOPUS ID：85083892292, Web of Science ID：WOS:000529258700001 - Continuum strength of isoscalar transiton of α + 40Ca in 44Ti
Nakao, M.; Umehara, H.; Nakamoto, R.; Ebata, S.; Ito, M.
Journal of Nuclear Science and Technology, Volume：57, Number：9, 2020, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1080/00223131.2020.1769765
DOI ID：10.1080/00223131.2020.1769765, ISSN：0022-3131, ORCID：113265808, SCOPUS ID：85088901958 - Swelling of Doubly Magic Ca 48 Core in Ca Isotopes beyond N=28
Tanaka, M.; Takechi, M.; Homma, A.; Fukuda, M.; Nishimura, D.; Suzuki, T.; Tanaka, Y.; Moriguchi, T.; Ahn, D.S.; Aimaganbetov, A.; Amano, M.; Arakawa, H.; Bagchi, S.; Behr, K.-H.; Burtebayev, N.; Chikaato, K.; Du, H.; Ebata, S.; Fujii, T.; Fukuda, N.; Geissel, H.; Hori, T.; Horiuchi, W.; Hoshino, S.; Igosawa, R.; Ikeda, A.; Inabe, N.; Inomata, K.; Itahashi, K.; Izumikawa, T.; Kamioka, D.; K; a, N.; Kato, I.; Kenzhina, I.; Korkulu, Z.; Kuk, Y.; Kusaka, K.; Matsuta, K.; Mihara, M.; Miyata, E.; Nagae, D.; Nakamura, S.; Nassurlla, M.; Nishimuro, K.; Nishizuka, K.; Ohnishi, K.; Ohtake, M.; Ohtsubo, T.; Omika, S.; Ong, H.J.; Ozawa, A.; Prochazka, A.; Sakurai, H.; Scheidenberger, C.; Shimizu, Y.; Sugihara, T.; Sumikama, T.; Suzuki, H.; Suzuki, S.; Takeda, H.; Tanaka, Y.K.; Tanihata, I.; Wada, T.; Wakayama, K.; Yagi, S.; Yamaguchi, T.; Yanagihara, R.; Yanagisawa, Y.; Yoshida, K.; Zholdybayev, T.K.
Physical Review Letters, Volume：124, Number：10, 2020, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1103/PhysRevLett.124.102501
DOI ID：10.1103/PhysRevLett.124.102501, ISSN：1079-7114, ORCID：113265766, SCOPUS ID：85082522874 - JENDL/ImPACT-2018: a new nuclear data library for innovative studies on transmutation of long-lived fission products
Satoshi Kunieda; Naoya Furutachi; Futoshi Minato; Nobuyuki Iwamoto; Osamu Iwamoto; Shinsuke Nakayama; Shuichiro Ebata; Toru Yoshida; Kenji Nishihara; Yukinobu Watanabe; Koji Niita
JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, Volume：56, Number：12, First page：1073, Last page：1091, Dec. 2019, [Reviewed]
A new nuclear data library, JENDL/ImPACT-2018, was developed for an innovative study on the transmutation of long-lived fission products. Nuclear reaction cross-sections were newly evaluated for incident neutrons and protons up to 200 MeV for 163 nuclides focusing on long-lived nuclei such as Se-79, Zr-93, Pd-107 and Cs-135, adopting some parts of JENDL-4.0. Our challenge was an evaluation of cross-sections for a number of unstable nuclei over a wide energy range where the experimental data were very scarce. We estimated cross-sections based on a nuclear model code CCONE by incorporating an advanced knowledge on the nuclear structure theory and a model-parameterization based on new experimental cross-sections measured by the inverse kinematics. Through comparisons with available experimental data on the stable isotopes, it is found that the present data give better agreements with them than those in the existing libraries. In a neutronics simulation by the PHITS code, we also found that the largest impact of the present library was seen on the estimated amount of isotope productions.
TAYLOR & FRANCIS LTD, English, Scientific journal
DOI：https://doi.org/10.1080/00223131.2019.1647889
DOI ID：10.1080/00223131.2019.1647889, ISSN：0022-3131, eISSN：1881-1248, ORCID：113265777, SCOPUS ID：85071646203, Web of Science ID：WOS:000483323600001 - Nuclear chart of deformation
中務, 孝; 江幡修一郎; 鷲山広平
日本原子力学会学会誌, Volume：61, Number：8, First page：610, Last page：615, Sep. 2019, [Reviewed]
原子核はさまざまな｢かたち｣を取ることは良く知られているが，実験データが取得できないような安定線から遠く離れた原子核は，どのような｢かたち｣をしているのだろうか。また，｢かたち｣が定まらないような原子核もあるのだろうか。近年のエネルギー密度汎関数法の発展により，質量数の小さな軽い原子核から超重元素の原子核，さらには中性子星のようなマクロな核物質までを，一つのエネルギー密度汎関数から出発する数値計算で記述することが可能になった。非制限計算から予言される，さまざまな原子核の｢かたち｣について報告する。長寿命核分裂生成物について，その長い半減期の一因は｢かたちの柔らかさ｣にあること，同じく長寿命をもつマイナー・アクチノイド核種とは性質が大きく異なっていることを示す。
Atomic Energy Society of Japan, Japanese
DOI：https://doi.org/10.3327/jaesjb.61.8_610
DOI ID：10.3327/jaesjb.61.8_610, ISSN：1882-2606, eISSN：2433-7285, J-Global ID：201902227387983837, CiNii Articles ID：130007828038, CiNii Books ID：AN00188477 - Corrigendum to: “Activation cross sections of α-induced reactions on natZn for Ge and Ga production” [Nucl. Instrum. Methods Phys. Res. B 427 (2018) 91–94](S0168583X18303124)(10.1016/j.nimb.2018.05.006)
Aikawa, M.; Saito, M.; Ebata, S.; Komori, Y.; Haba, H.
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Volume：440, First page：201, Last page：201, 2019, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1016/j.nimb.2018.08.043
DOI ID：10.1016/j.nimb.2018.08.043, ISSN：0168-583X, ORCID：113265805, SCOPUS ID：85053050319 - Microscopic global optical potential for nucleon-nucleus systems in the energy range 50-400 MeV
Furumoto, T.; Tsubakihara, K.; Ebata, S.; Horiuchi, W.
Physical Review C, Volume：99, Number：3, 2019, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1103/PhysRevC.99.034605
DOI ID：10.1103/PhysRevC.99.034605, ISSN：2469-9993, ORCID：113265776, SCOPUS ID：85062878502 - Coulomb breakup reactions of Zr-93,Zr-94 in inverse kinematics
Satoshi Takeuchi; Takashi Nakamura; Mizuki Shikata; Yasuhiro Togano; Yosuke Kondo; Junichi Tsubota; Tomoyuki Ozaki; Atsumi Saito; Hideaki Otsu; He Wang; Hiroyoshi Sakurai; Yukinobu Watanabe; Shoichiro Kawase; DeukSoon Ahn; Masayuki Aikawa; Takashi Ando; Shohei Araki; Sidong Chen; Nobuyuki Chiga; Pieter Doornenbal; Shuichiro Ebata; Naoki Fukuda; Tadaaki Isobe; Shunsuke Kawakami; Tadahiro Kin; Shunpei Koyama; Shigeru Kubono; Yukie Maeda; Ayano Makinaga; Masafumi Matsushita; Teiichiro Matsuzaki; Shin'ichiro Michimasa; Satoru Momiyama; Shunsuke Nagamine; Keita Nakano; Megumi Niikura; Kazuyuki Ogata; Takeshi Saito; Yoshiaki Shiga; Yohei Shimizu; Susumu Shimoura; Toshiyuki Sumikama; Paer-Anders Soederstrom; Hiroshi Suzuki; Hiroyuki Takeda; Ryo Taniuchi; Meiko Uesaka; Yasushi Watanabe; Kathrin Wimmer; Tatsuya Yamamoto; Koichi Yoshida
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, Volume：2019, Number：1, Jan. 2019, [Reviewed]
Coulomb breakup reactions of Zr have been studied in inverse kinematics at incident beam energies of about 200 MeV/nucleon in order to evaluate neutron capture reaction methods. The Zr(n,)Zr reaction is particularly important as a candidate nuclear transmutation reaction for the long-lived fission product Zr in nuclear power plants. One- and two-neutron removal cross sections on Pb and C targets were measured to deduce the inclusive Coulomb breakup cross sections, 375 29 (stat.) 30 (syst.) and 403 26 (stat.) 31 (syst.) mb for Zr and Zr, respectively. The results are compared with estimates using the standard Lorentzian model and microscopic calculations. The results reveal a possible contribution of the pygmy dipole resonance or giant quadrupole resonance in the Coulomb breakup reactions of Zr.
OXFORD UNIV PRESS INC, English, Scientific journal
DOI：https://doi.org/10.1093/ptep/pty138
DOI ID：10.1093/ptep/pty138, ISSN：2050-3911, ORCID：113265768, SCOPUS ID：85063226068, Web of Science ID：WOS:000460638500008 - Activation cross sections of α-induced reactions on natZn for Ge and Ga production
Aikawa, M.; Saito, M.; Ebata, S.; Komori, Y.; Haba, H.
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Volume：427, First page：91, Last page：94, Jul. 2018, [Reviewed], ［International magazine］
English, Scientific journal
DOI：https://doi.org/10.1016/j.nimb.2018.05.006
DOI ID：10.1016/j.nimb.2018.05.006, ISSN：0168-583X, ORCID：113265778, SCOPUS ID：85046816424 - Cluster Thomas-Ehrman effect in mirror nuclei
Nakao, M.; Umehara, H.; Ebata, S.; Ito, M.
Physical Review C, Volume：98, Number：5, 2018, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1103/PhysRevC.98.054318
DOI ID：10.1103/PhysRevC.98.054318, ISSN：2469-9993, ORCID：113265775, SCOPUS ID：85057563847 - Cluster structure and Coulomb shift in two-center mirror systems
M. Nakao; H. Umehara; S. Sonoda; S. Ebata; M. Ito
EPJ Web of Conferences, Volume：163, Nov. 2017, [Reviewed]
The α + 14C elastic scattering and the nuclear structure of its compound systems, 18O = α + 14C, are analyzed on the basis of the semi-microscopic model. The α + 14C interaction potential is constructed from the double folding (DF) model with the effective nucleon-nucleon interaction of the density-dependent Michigan 3-range Yukawa. The DF potential is applied to the α+14C elastic scattering in the energy range of Eα/Aα = 5.5 ∼ 8.8 MeV, and the observed differential cross sections are reasonably reproduced. The energy spectra of 18O are calculated by employing the orthogonality condition model (OCM) plus the absorbing boundary condition (ABC). The OCM + ABC calculation predicts the formation of the 0+ resonance around E = 3MeV with respect to the α threshold, which seems to correspond to the resonance identified in the recent experiment. We also apply the OCM + ABC calculation to the mirror system, such as 18Ne = α+14O, and the Coulomb shift of 18O - 18Ne is evaluated. We have found that the Coulomb shift is clearly reduced in the excited 0+ state due to the development of the α cluster structure. This result strongly supports that the Coulomb shift is a candidate of new probe to identify the clustering phenomena.
EDP Sciences, English, International conference proceedings
DOI：https://doi.org/10.1051/epjconf/201716300040
DOI ID：10.1051/epjconf/201716300040, ISSN：2100-014X, SCOPUS ID：85036611460 - Neutron-skin thickness determines the surface tension of a compressible nuclear droplet
W. Horiuchi; S. Ebata; K. Iida
Physical Review C, Volume：96, Number：3, Sep. 2017, [Reviewed]
We systematically investigate the neutron-skin thickness of neutron-rich nuclei within a compressible droplet model, which includes several parameters characterizing the surface tension and the equation of state (EOS) of asymmetric nuclear matter as well as corrections due to the surface diffuseness. Such a systematic analysis helps towards constraining the EOS parameters of asymmetric nuclear matter and the poorly known density dependence of the surface tension
the latter is estimated with help of available experimental data for the neutron and proton density distributions and the nuclear masses. Validity of the present approach is confirmed by calculating realistic density distributions of Ca, Ni, Zr, Sn, Yb, and Pb isotopes within a microscopic Skyrme-Hartree-Fock+BCS method for various sets of the effective nuclear force. Our macroscopic model accompanied by the diffuseness corrections works well in the sense that it well reproduces the evolution of the microscopically deduced neutron-skin thickness with respect to the neutron number for selected sets of the effective nuclear force. We find that the surface tension of the compressible nuclear droplet is a key to bridging a gap between microscopic and macroscopic approaches.
American Physical Society, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevC.96.035804
DOI ID：10.1103/PhysRevC.96.035804, ISSN：2469-9993, ORCID：113265803, SCOPUS ID：85029859706 - Low-lying electric-dipole strengths of Ca, Ni, and Sn isotopes imprinted on total reaction cross sections
W. Horiuchi; S. Hatakeyama; S. Ebata; Y. Suzuki
Physical Review C, Volume：96, Number：2, Aug. 2017, [Reviewed]
Low-lying electric-dipole (E1) strength of a neutron-rich nucleus contains information on neutron-skin thickness, deformation, and shell evolution. We discuss the possibility of making use of total reaction cross sections on Ca40, Sn120, and Pb208 targets to probe the E1 strength of neutron-rich Ca, Ni, and Sn isotopes. They exhibit large enhancement of the E1 strength at neutron number N>
28, 50, and 82, respectively, due to a change of the single-particle orbits near the Fermi surface participating in the transitions. The density distributions and the electric-multipole strength functions of those isotopes are calculated by the Hartree-Fock+BCS and the canonical-basis-time-dependent-Hartree-Fock-Bogoliubov methods, respectively, using three kinds of Skyrme-type effective interaction. The nuclear and Coulomb breakup processes are respectively described with the Glauber model and the equivalent photon method in which the effect of finite-charge distribution is taken into account. The three Skyrme interactions give different results for the total reaction cross sections because of different Coulomb breakup contributions. The contribution of the low-lying E1 strength is amplified when the low-incident energy is chosen. With an appropriate choice of the incident energy and target nucleus, the total reaction cross section can be complementary to the Coulomb excitation for analyzing the low-lying E1 strength of unstable nuclei.
American Physical Society, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevC.96.024605
DOI ID：10.1103/PhysRevC.96.024605, ISSN：2469-9993, ORCID：113265791, SCOPUS ID：85028745577 - Octupole deformation in the nuclear chart based on the 3D Skyrme Hartree-Fock plus BCS model
Shuichiro Ebata; Takashi Nakatsukasa
PHYSICA SCRIPTA, Volume：92, Number：6, First page：064005, Last page：064005, Jun. 2017, [Reviewed]
We have performed a systematic study of the ground state for 1002 even-even nuclei in which 28 octupole-deformed nuclei are found. The interplay between the spatial deformation and the pairing correlation plays an important role in the nuclear structure. Our model is based on the Skyrme Hartree-Fock plus BCS model represented in the three-dimensional Cartesian coordinate space, which can describe any kind of nuclear shape. The quadrupole and octupole deformed nuclei appear in the mass region with characteristic neutron and proton numbers which are consistent with previous studies. In our results, there appear only pear shapes (beta(30)) in the octupole deformed nuclei. We investigate the potential energy surfaces as functions of the octupole deformations (beta(3m); m - 0, 1, 2, 3), which tells us that Rn-220 also has local minima in the beta(31) and beta(32) potential energy surfaces.
IOP PUBLISHING LTD, English, Scientific journal
DOI：https://doi.org/10.1088/1402-4896/aa6c4c
DOI ID：10.1088/1402-4896/aa6c4c, ISSN：0031-8949, eISSN：1402-4896, ORCID：113265779, arXiv ID：arXiv:1707.07416, SCOPUS ID：85020430801, Web of Science ID：WOS:000402534000002 - Extended methods using thick-targets for nuclear reaction data of radioactive isotopes
Shuichiro Ebata; Masayuki Aikawa; Shotaro Imai
ND 2016: INTERNATIONAL CONFERENCE ON NUCLEAR DATA FOR SCIENCE AND TECHNOLOGY, Volume：146, 2017, [Reviewed]
The nuclear transmutation is a technology to dispose of radioactive wastes. However, we do not have enough basic data for its developments, such as thick-target yields (TTY) and the interaction cross sections for radioactive material. We suggest two methods to estimate the TTY using inverse kinematics and to obtain the excitation function of the interaction cross sections which is named the thick-target transmission (T3) method. We deduce the energy-dependent conversion relation between the TTYs of the original system and its inverse kinematics, which can be replaced to a constant coefficient in the high energy region. Furthermore we show the usefulness of the T3 method to investigate the excitation function of the C-12 + Al-27 reaction in the simulation.
E D P SCIENCES, English, International conference proceedings
DOI：https://doi.org/10.1051/epjconf/201714603010
DOI ID：10.1051/epjconf/201714603010, ISSN：2100-014X, Web of Science ID：WOS:000426429500077 - Thick-target transmission method for excitation functions of interaction cross sections
M. Aikawa; S. Ebata; S. Imai
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Volume：383, First page：156, Last page：159, Sep. 2016, [Reviewed]
We propose a method, called as thick-target transmission (T3) method, to obtain an excitation function of interaction cross sections. In an ordinal experiment to measure the excitation function of interaction cross sections by the transmission method, we need to change the beam energy for each cross section. In the T3 method, the excitation function is derived from the beam attenuations measured at the targets of different thicknesses without changing the beam energy. The advantage of the T3 method is the simplicity and availability for radioactive beams. To confirm the availability, we perform a simulation for the C-12 + Al-27 system with the PHITS code instead of actual experiments. Our results have large uncertainties but well reproduce the tendency of the experimental data. (C) 2016 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.nimb.2016.07.003
DOI ID：10.1016/j.nimb.2016.07.003, ISSN：0168-583X, eISSN：1872-9584, ORCID：113265760, SCOPUS ID：84978194571, Web of Science ID：WOS:000383007300021 - Extracting nuclear sizes of medium to heavy nuclei from total reaction cross sections
W. Horiuchi; S. Hatakeyama; S. Ebata; Y. Suzuki
Physical Review C, Volume：93, Number：4, First page：044611, Last page：044611, Apr. 2016, [Reviewed]
Background: Proton and neutron radii are fundamental quantities of atomic nuclei. To study the sizes of short-lived unstable nuclei, there is a need for an alternative to electron scattering. Purpose: The recent paper by Horiuchi [Phys. Rev. C 89, 011601(R) (2014)]PRVCAN0556-281310.1103/PhysRevC.89.011601 proposed a possible way of extracting the matter and neutron-skin thickness of light- to medium-mass nuclei using total reaction cross section, σR. The analysis is extended to medium to heavy nuclei up to lead isotopes with due attention to Coulomb breakup contributions as well as density distributions improved by paring correlation. Methods: We formulate a quantitative calculation of σR based on the Glauber model including the Coulomb breakup. To substantiate the treatment of the Coulomb breakup, we also evaluate the Coulomb breakup cross section due to the electric dipole field in a canonical-basis-time-dependent-Hartree-Fock-Bogoliubov theory in the three-dimensional coordinate space. Results: We analyze σR's of 103 nuclei with Z=20, 28, 40, 50, 70, and 82 incident on light targets, H1,2, He4, and C12. Three kinds of Skyrme interactions are tested to generate those wave functions. To discuss possible uncertainty due to the Coulomb breakup, we examine its dependence on the target, the incident energy, and the Skyrme interaction. The proton is a most promising target for extracting the nuclear sizes as the Coulomb excitation can safely be neglected. We find that the so-called reaction radius, aR=σR/π, for the proton target is very well approximated by a linear function of two variables, the matter radius and the skin thickness, in which three constants depend only on the incident energy. We quantify the accuracy of σR measurements needed to extract the nuclear sizes. Conclusions: The proton is the best target because, once the incident energy is set, its aR is very accurately determined by only the matter radius and neutron-skin thickness. If σR's at different incident energies are measured, one can determine both the proton and neutron radii for unstable nuclei as well. The total reaction cross sections calculated in this paper are given as Supplemental Material for the sake of future measurements.
American Physical Society, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevC.93.044611
DOI ID：10.1103/PhysRevC.93.044611, ISSN：2469-9993, ORCID：113265798, SCOPUS ID：84964370893 - Simulation for thick-target yields of transmutation reactions on radioactive targets, based on inverse kinematics
Shuichiro Ebata; Masayuki Aikawa; Shotaro Imai
CNR*15 - 5TH INTERNATIONAL WORKSHOP ON COMPOUND-NUCLEAR REACTIONS AND RELATED TOPICS, Volume：122, 2016, [Reviewed]
To dispose of long-lived fission products (LLFP) ejected from nuclear reactor plants is one of the most important tasks on nuclear physics and engineering. The experiments with the radiative target are limited, due to the high radioactivity and chemical property of the target. In consequence, the nuclear reaction data for LLFP are insufficient. In this work, we propose a feasible method to obtain the data for radiative targets using inverse kinematics and simulate specific systems to evaluate the thick-target yields of the nuclear transmutation reactions for LLFP.
E D P SCIENCES, English, International conference proceedings
DOI：https://doi.org/10.1051/epjconf/201612207003
DOI ID：10.1051/epjconf/201612207003, ISSN：2100-014X, Web of Science ID：WOS:000389877200035 - Systematic investigation of low-lying dipole modes using the canonical-basis time-dependent Hartree-Fock-Bogoliubov theory (vol 90, 024303, 2014)
Shuichiro Ebata; Takashi Nakatsukasa; Tsunenori Inakura
PHYSICAL REVIEW C, Volume：92, Number：4, Oct. 2015, [Reviewed]
AMER PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevC.92.049902
DOI ID：10.1103/PhysRevC.92.049902, ISSN：0556-2813, eISSN：1089-490X, ORCID：113265794, SCOPUS ID：84946574373, Web of Science ID：WOS:000363525500005 - Photonuclear reactions of calcium isotopes calculated with the nuclear shell model
Yutaka Utsuno; Noritaka Shimizu; Takaharu Otsuka; Shuichiro Ebata; Michio Honma
PROGRESS IN NUCLEAR ENERGY, Volume：82, First page：102, Last page：106, Jul. 2015, [Reviewed]
Photoabsorption cross sections in calcium isotopes are investigated theoretically with the most advanced nuclear-structure calculations using the nuclear shell model. We show that the photoabsorption cross sections in Ca-48 dominated by a giant dipole resonance (GDR) are well reproduced with the shell model and predict that a pygmy dipole resonance (FOR) appears in Ca-52 in the low-energy tail of GDR. Excellent agreement with the experiment is achieved due to highly correlated many-body wave functions obtained by treating a huge matrix with the dimension of similar to 10(10). (C) 2014 Elsevier Ltd. All rights reserved.
PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
DOI：https://doi.org/10.1016/j.pnucene.2014.07.036
DOI ID：10.1016/j.pnucene.2014.07.036, ISSN：0149-1970, ORCID：113265761, SCOPUS ID：84930868875, Web of Science ID：WOS:000357837100019 - Thick-target yields of radioactive targets deduced from inverse kinematics
M. Aikawa; S. Ebata; S. Imai
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Volume：353, First page：1, Last page：3, Jun. 2015, [Reviewed]
The thick-target yield CITY) is a macroscopic quantity reflected by nuclear reactions and matter properties of targets. In order to evaluate TTys on radioactive targets, we suggest a conversion method from inverse kinematics corresponding to the reaction of radioactive beams on stable targets. The method to deduce the TTY is theoretically derived from inverse kinematics. We apply the method to the Cu-nat(C-12,X)Na-24 reaction to confirm availability. In addition, it is applied to the Cs-137 + C-12 reaction as an example of a radioactive system and discussed a conversion coefficient of a TTY measurement. (C) 2015 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.nimb.2015.04.002
DOI ID：10.1016/j.nimb.2015.04.002, ISSN：0168-583X, eISSN：1872-9584, ORCID：142389052, arXiv ID：arXiv:1411.6729, Web of Science ID：WOS:000356193800001 - Compilation of Nuclear Reaction Data from RIBF
Ayano Makinaga; Shuichiro Ebata; Masayuki Aikawa; Naoya Furutachi; Dagvadorj Ichinkhorloo; Kiyoshi Kato; Myagmarjav Odsuren; Vidya Devi; Naohiko Otuka; Akihisa Kohama; Hideaki Otsu; Hiroyoshi Sakurai
JPS Conference Proceeding, Volume：6, First page：030135, May 2015, [Reviewed]
English, International conference proceedings
DOI：https://doi.org/10.7566/JPSCP.6.030135
DOI ID：10.7566/JPSCP.6.030135 - Repulsive aspects of pairing correlation in nuclear fusion reaction
Nakatsukasa,Takashi; Ebata,Shuichiro
JPS Conference Proceedings, Volume：6, First page：020056, 2015, [Reviewed]
English, International conference proceedings
DOI：https://doi.org/10.7566/JPSCP.6.020056
DOI ID：10.7566/JPSCP.6.020056 - Low-lying 2(+) states generated by pn-quadrupole correlation and N=28 shell quenching
Shuichiro Ebata; Masaaki Kimura
PHYSICAL REVIEW C, Volume：91, Number：1, First page：014309, Last page：014309, Jan. 2015, [Reviewed]
The quadrupole vibrational modes of neutron-rich N = 28 isotones (Ca-48, Ar-46, S-44, and Si-42) are investigated by using the canonical-basis time-dependent Hartree-Fock-Bogoliubov theory with several choice of energy density functionals, including nuclear pairing correlation. It is found that the quenching of the N = 28 shell gap and the proton holes in the sd shell trigger quadrupole correlation and increase the collectivity of the low-lying 2(+) state in Ar-46. It is also found that the pairing correlation plays an important role to increase the collectivity. We also demonstrate that the same mechanism to enhance the low-lying collectivity applies to other N = 28 isotones S-44 and Si-42, and it generates a couple of low-lying 2(+) states which can be associated with the observed 2(+) states.
AMER PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevC.91.014309
DOI ID：10.1103/PhysRevC.91.014309, ISSN：0556-2813, eISSN：1089-490X, ORCID：142389089, arXiv ID：arXiv:1403.4008, Web of Science ID：WOS:000349350900003 - Systematic investigation of low-lying dipole modes using the canonical-basis time-dependent Hartree-Fock-Bogoliubov theory
Shuichiro Ebata; Takashi Nakatsukasa; Tsunenori Inakura
PHYSICAL REVIEW C, Volume：90, Number：2, Aug. 2014, [Reviewed]
Systematic investigations of the electric dipole (E1) modes of excitation are performed using the canonical-basis time-dependent Hartree-Fock-Bogoliubov (Cb-TDHFB) theory. The Cb-TDHFB is able to describe dynamical pairing correlations in excited states of nuclear systems. We apply the method to the real-time calculation of linear response in even-even nuclei with Skyrme functionals. Effects of shell structure, neutron skin, deformation, and neutron chemical potential (separation energy) are studied in a systematic way. This reveals a number of characteristic features of the low-energy E1 modes. We also find a universal behavior in the low-energy E1 modes for heavy neutron-rich isotopes, which suggests the emergence of decoupled E1 peaks beyond N = 82.
AMER PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevC.90.024303
DOI ID：10.1103/PhysRevC.90.024303, ISSN：0556-2813, eISSN：1089-490X, ORCID：113265797, SCOPUS ID：84921466170, Web of Science ID：WOS:000339995000001 - Pairing effects in nuclear fusion reaction
Ebata,,Shuichiro; Nakatsukasa,Takashi
JPS Conference Proceeding, Volume：1, First page：013038, 2014, [Reviewed]
English, International conference proceedings - SYSTEMATIC STUDY OF E1 MODE USING CANONICAL-BASIS TDHFB
S. Ebata; T. Nakatsukasa; T. Inakura; K. Yoshida; Y. Hashimoto; K. Yabana
FRENCH-JAPANESE SYMPOSIUM ON NUCLEAR STRUCTURE PROBLEMS: ORGANIZED IN THE FRAMEWORK OF FJNSP LIA AND EFES, First page：94, Last page：97, 2013, [Reviewed]
We systematically investigate the E1 strength distributions of even-even nuclei (Z = 8- 20 isotopes) using the canonical-basis time-dependent Hartree-Fock-Bogoliubov theory that can describe the dynamics of superfluid nuclei. Especially, we focus on the low-lying E1 strength that is often called pygmy dipole resonance and investigate the neutron-number dependence of the strength in neutron-rich nuclei. The evolution of the low-lying E1 strength is determined by several factors including the neutron-shell effects, the deformation and the pairing.
WORLD SCIENTIFIC PUBL CO PTE LTD, English, International conference proceedings
Web of Science ID：WOS:000336045300018 - Density functional approaches to nuclear dynamics
T. Nakatsukasa; S. Ebata; P. Avogadro; L. Guo; T. Inakura; K. Yoshida
XXXV SYMPOSIUM ON NUCLEAR PHYSICS, Volume：387, 2012, [Reviewed]
We present background concepts of the nuclear density functional theory (DFT) and applications of the time-dependent DFT with the Skyrme energy functional for nuclear response functions. Practical methods for numerical applications of the time-dependent Hartree-Fock-Bogoliubov theory (TDHFB) are proposed; finite amplitude method and canonical-basis TDHFB. These approaches are briefly reviewed and some numerical applications are shown to demonstrate their feasibility.
IOP PUBLISHING LTD, English, International conference proceedings
DOI：https://doi.org/10.1088/1742-6596/387/1/012015
DOI ID：10.1088/1742-6596/387/1/012015, ISSN：1742-6588, Web of Science ID：WOS:000309660800015 - Cb-TDHFB Calculation for the Low-Lying E1 Strength of Heavy Nuclei around the r-Process Path
Shuichiro Ebata; Takashi Nakatsukasa; Tsunenori Inakura
PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT, Number：196, First page：316, Last page：321, 2012, [Reviewed]
We have developed the canonical-basis time-dependent Hartree-Fock-Bogoliubov (Cb-TDHFB) method and carry out a systematic investigation on the low-lying electric dipole (E1) mode using the Cb-TDHFB. The Cb-TDHFB is a new method which is derived from TDHFB represented in the canonical basis with an approximation for pairing correlation analogous to the BCS theory. We apply the method to linear-response calculation for even-even nuclei. We report the neutron-number dependence of low-lying E1 strength in light (A < 70) and heavy isotopes (A > 100) around the magic number of N = 82.
PROGRESS THEORETICAL PHYSICS PUBLICATION OFFICE, English, Scientific journal
DOI：https://doi.org/10.1143/PTPS.196.316
DOI ID：10.1143/PTPS.196.316, ISSN：0375-9687, ORCID：113265780, SCOPUS ID：84868246801, Web of Science ID：WOS:000310816600039 - Canonical-basis time-dependent Hartree-Fock-Bogoliubov theory and linear-response calculations
Shuichiro Ebata; Takashi Nakatsukasa; Tsunenori Inakura; Kenichi Yoshida; Yukio Hashimoto; Kazuhiro Yabana
PHYSICAL REVIEW C, Volume：82, Number：3, Sep. 2010, [Reviewed]
We present simple equations for a canonical-basis (Cb) formulation of the time-dependent Hartree-Fock-Bogoliubov (TDHFB) theory. The equations are obtained from the TDHFB theory with an approximation that the pair potential is assumed to be diagonal in the Cb. The Cb formulation significantly reduces the computational cost. We apply the method to linear-response calculations for even-even light nuclei and demonstrate its capability and accuracy by comparing our results with recent calculations of the quasiparticle random-phase approximation with Skyrme functionals. We show systematic studies of E1 strength distributions for Ne and Mg isotopes. The evolution of the low-lying pygmy strength seems to be determined by the interplay of several factors, which include the neutron excess, the separation energy, the neutron-shell effects, the deformation, and the pairing.
AMER PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevC.82.034306
DOI ID：10.1103/PhysRevC.82.034306, ISSN：0556-2813, eISSN：1089-490X, ORCID：113265782, SCOPUS ID：77957296614, Web of Science ID：WOS:000281658700002 - LINEAR RESPONSE CALCULATION USING CANONICAL-BASIS TDHFB WITH A SCHEMATIC PAIRING FUNCTIONAL
Shuichiro Ebata; T. Nakatsukasa; T. Inakura; Y. Hashimoto; K. Yabana
MODERN PHYSICS LETTERS A, Volume：25, Number：21-23, First page：2001, Last page：2002, Jul. 2010, [Reviewed]
We derive the Canonical-basis Time-Dependent Hartree-Fock-Bogoliubov (CbTDHFB) equations using time-dependent variational principle with a special pairing energy functional. We obtain the isoscalar quadrupole strength functions for Magnesium isotopes with small-amplitude CbTDHFB calculation in the three-dimensional coordinate-space representation.
WORLD SCIENTIFIC PUBL CO PTE LTD, English, Scientific journal
DOI：https://doi.org/10.1142/S021773231000085X
DOI ID：10.1142/S021773231000085X, ISSN：0217-7323, ORCID：113265815, SCOPUS ID：77954821389, Web of Science ID：WOS:000280050200065 - Linear Response Calculation using Canonical-basis TDHFB with a schematic pairing functional
S. Ebata; T. Nakatsukasa; T. Inakura; Y. Hashimoto; K. Yabana
10TH INTERNATIONAL SYMPOSIUM ON ORIGIN OF MATTER AND EVOLUTION OF GALAXIES, Volume：1269, First page：466, Last page：468, 2010, [Reviewed]
The recent progress of radioactive facilities strongly demands a theoretical method (model) that is able to analyze and predict the elementary modes of excitation in exotic nuclei, including the r-process region which is very neutron-rich. For applications to heavy unstable nuclei, the method should take into account the effects of deformation and pairing correlation. The Time-Dependent Hartree-Fock-Bogofiubov (TDHFB) or HFB plus quasi-particle random-phase approximation (HFB+QRPA) are such candidates[1], which are applicable to a wide range of nuclei from light- to heavy-mass regions. However, they require a significant effort for coding the program as well as large computational resources. The TDHFB or HFB+QRPA for deformed nuclei is currently still in a preliminary stage[2, 3, 4]. We propose an alternative yet feasible approach, " Canonical-basis TDHFB" (CbTDHFB) in the three-dimensional coordinate-space representation. The computational task of CbTDHFB is much smaller than that of TDHFB.
AMER INST PHYSICS, English, International conference proceedings
ISSN：0094-243X, Web of Science ID：WOS:000281986900092
- Multiplicities of fission neutron estimated from the charge distribution calculated by the microscopic mean-field model
江幡修一郎; 奥村森; 石塚知香子; 千葉敏; 千葉敏
日本原子力学会春の年会予稿集(CD-ROM), Volume：2024, 2024
J-Global ID：202402224578505770 - Analysis for nuclear matter equation of state by Gaussian process regression
西坂元希; 江幡修一郎
日本物理学会講演概要集(CD-ROM), Volume：79, Number：1, 2024
ISSN：2189-079X, J-Global ID：202402232115572493 - Estimation of production cross sections in medium-heavy hypernuclei using a simple model
吉永尚孝; 江幡修一郎; 梅谷篤史
日本物理学会講演概要集(CD-ROM), Volume：79, Number：1, 2024
ISSN：2189-079X, J-Global ID：202402283872247830 - DWIA calculation for the hypernuclear production, using the mean-field and shell model results
KIM Kunhee; 江幡修一郎; 梅谷篤史
日本物理学会講演概要集(CD-ROM), Volume：79, Number：1, 2024
ISSN：2189-079X, J-Global ID：202402241725731432 - Global description of alpha elastic scattering
古本猛憲; 椿原康介; 江幡修一郎; 堀内渉; 堀内渉
日本物理学会講演概要集(CD-ROM), Volume：79, Number：1, 2024
ISSN：2189-079X, J-Global ID：202402233932162174 - Low-energy fusion cross sections for the deformed nuclei using a mean-field model
箭内雄; 江幡修一郎
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502236255599178 - Production cross sections of Lambda hypernuclei in a simple model
吉永尚孝; 江幡修一郎; 梅谷篤史
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502239848318079 - Study of nuclear quadrupole deformation using α scattering based on microscopic coupled-channel method
椿原康介; 古本猛憲; 江幡修一郎; 堀内渉; 堀内渉; 堀内渉
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502241284137892 - Systematic investigation of the non-uniformity of nuclear density distributions
江幡修一郎; 堀内渉; 堀内渉; 堀内渉; 堀内渉
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502244976606769 - Global description of light-ion elastic scattering
古本猛憲; 椿原康介; 江幡修一郎; 堀内渉; 堀内渉; 堀内渉
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502268307688028 - 多面的に入門する原子核物理学
江幡修一郎
Volume：67, Number：Supplement 1, First page：4, Last page：12, 2023
Japanese
ISSN：0367-4169, J-Global ID：202302228897262016, CiNii Books ID：AN00077895 - Mean-field model calculations for electric dipole strength functions of lambda hypernuclei
江幡修一郎; 伊東駿; 梅谷篤史; 吉永尚孝
日本物理学会講演概要集(CD-ROM), Volume：78, Number：1, 2023
ISSN：2189-079X, J-Global ID：202302273369667459 - A study on octupole vibration from Shell Model calculations of E2 transition probability
落合達哉; 吉永尚孝; 江幡修一郎; 東山幸司
日本物理学会講演概要集(CD-ROM), Volume：78, Number：1, 2023
ISSN：2189-079X, J-Global ID：202302247127486130 - Simple model for a study of Λ hyper nuclei in medium and heavy mass regions
吉永尚孝; 梅谷篤史; 野嶋翼; 江幡修一郎; 伊東駿
日本物理学会講演概要集(CD-ROM), Volume：77, Number：1, 2022
ISSN：2189-079X, J-Global ID：202202239787956313 - Mean-field model calculations for the density of Lambda hyper nuclei with Skyrme-type effective interaction
伊東駿; 江幡修一郎; 吉永尚孝; 梅谷篤史
日本物理学会講演概要集(CD-ROM), Volume：77, Number：1, 2022
ISSN：2189-079X, J-Global ID：202202253939090060 - Pairing effect on fission barrier height employing microscopic mean-field model
藤尾和樹; 江幡修一郎; 稲倉恒法; 石塚知香子; 千葉敏
日本原子力学会秋の大会予稿集(CD-ROM), Volume：2022, 2022
J-Global ID：202302230364402799 - Role of Tensor forces in shell model calculations of heavy nuclei
吉永尚孝; 落合達哉; 江幡修一郎; 渡邊千夏; 東山幸司
日本物理学会講演概要集(CD-ROM), Volume：77, Number：2, 2022
ISSN：2189-079X, J-Global ID：202302225954239981 - The time-dependent mean-field model calculation for strength functions of lambda hypernuclei
江幡修一郎; 伊東駿; 梅谷篤史; 吉永尚孝
日本物理学会講演概要集(CD-ROM), Volume：77, Number：2, 2022
ISSN：2189-079X, J-Global ID：202302263469161003 - Application of octupole phonon model to nuclei in A~80 mass region
落合達哉; 吉永尚孝; 江幡修一郎; 東山幸司
日本物理学会講演概要集(CD-ROM), Volume：77, Number：2, 2022
ISSN：2189-079X, J-Global ID：202302268354304973 - Effects of Lambda hyperon in hypernuclei calculated by mean-field model
伊東駿; 江幡修一郎; 吉永尚孝; 梅谷篤史
日本物理学会講演概要集(CD-ROM), Volume：77, Number：2, 2022
ISSN：2189-079X, J-Global ID：202302287644135872 - Charge polarization of the fission fragments deduced by the real time-dependent mean-field calculation from equal-energy contours
江幡修一郎; 奥村森; 石塚知香子; 千葉敏
日本原子力学会春の年会予稿集(CD-ROM), Volume：2021, 2021
J-Global ID：202102251454071458 - The study of separating the fission path energy of U-236 using the microscopic mean-field model
藤尾和樹; 江幡修一郎; 稲倉恒法; 千葉敏
日本原子力学会春の年会予稿集(CD-ROM), Volume：2021, 2021
J-Global ID：202102273904327690 - Time-dependent mean-field model calculation for the charge polarization of fission fragments
江幡修一郎; 奥村森; 石塚知香子; 千葉敏
日本物理学会講演概要集(CD-ROM), Volume：76, Number：1, 2021
ISSN：2189-079X, J-Global ID：202102261445404489 - Fission fragment yields estimated from the microscopic calculations through the random-walk method
藤尾和樹; 江幡修一郎; 稲倉恒法; 石塚知香子; 千葉敏
日本原子力学会秋の大会予稿集(CD-ROM), Volume：2021, 2021
J-Global ID：202202231059683270 - Energy dependence of the charge polarization deduced from the time-dependent mean-field calculation
江幡修一郎; 奥村森; 石塚知香子; 千葉敏
日本原子力学会秋の大会予稿集(CD-ROM), Volume：2021, 2021
J-Global ID：202202237014766214 - Production cross sections of 140Nd in the deuteron-induced reaction on 141Pr
合川正幸; 前橋拓斗; DAGVADORJ Ichinkhorloo; 江幡修一郎; 小森有希子; 羽場宏光
日本原子力学会秋の大会予稿集(CD-ROM), Volume：2021, 2021
J-Global ID：202202251464101207 - Energy spectra and electromagnetic transitions of medium-heavy hypernuclei in a simple model
野嶋翼; 吉永尚孝; 江幡修一郎; 梅谷篤史
日本物理学会講演概要集(CD-ROM), Volume：76, Number：2, 2021
ISSN：2189-079X, J-Global ID：202202235954799939 - Shell model study of nuclei in mass around 140 region and octupole correlations
吉永尚孝; 渡邊千夏; 江幡修一郎; 東山幸司
日本物理学会講演概要集(CD-ROM), Volume：76, Number：2, 2021
ISSN：2189-079X, J-Global ID：202202220857823815 - Initial energy dependence of time-dependent mean-field model for the charge polarization of fission fragments
江幡修一郎; 奥村森; 石塚知香子; 千葉敏
日本物理学会講演概要集(CD-ROM), Volume：76, Number：2, 2021
ISSN：2189-079X, J-Global ID：202202276172734659 - Charge polarization of fission fragments from U-236 calculated with a time-dependent mean-field model
江幡修一郎; 奥村森; 石塚知香子; 千葉敏
日本原子力学会春の年会予稿集(CD-ROM), Volume：2020, 2020
J-Global ID：202002220273196942 - Energy valance and the fission path on U-236 with the microscopic mean-field theory
藤尾和樹; 江幡修一郎; 千葉敏
日本原子力学会春の年会予稿集(CD-ROM), Volume：2020, 2020
J-Global ID：202002253443736528 - Systematic analysis of alpha-nucleus global potential
椿原康介; 江幡修一郎; 堀内渉; 古本猛憲
日本物理学会講演概要集(CD-ROM), Volume：75, Number：1, First page：293, Last page：293, 2020
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.75.1.0_293
DOI ID：10.11316/jpsgaiyo.75.1.0_293, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：202002214422595646, CiNii Articles ID：130008157100 - Role of Tensor forces in shell model calculations of heavy nuclei
吉永尚孝; 江幡修一郎; 渡邊千夏; 東山幸司
日本物理学会講演概要集(CD-ROM), Volume：75, Number：1, First page：158, Last page：158, 2020
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.75.1.0_158
DOI ID：10.11316/jpsgaiyo.75.1.0_158, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：202002274150444241, CiNii Articles ID：130008155648 - The study of separating the fission path energy of U-236 using the microscopic mean-field model
藤尾和樹; 江幡修一郎; 稲倉恒法; 千葉敏
日本原子力学会秋の大会予稿集(CD-ROM), Volume：2020, 2020
J-Global ID：202102229149447333 - Deformations of fission fragments and prompt neutron multiplicity Comparison between deformation dependence of TCWS and HFB
ZHANG Xuan; 藤尾和樹; 江幡修一郎; 石塚知香子; 稲倉恒法; IVANYUK Fedir A.; 千葉敏
日本原子力学会秋の大会予稿集(CD-ROM), Volume：2020, 2020
J-Global ID：202102252380550865 - Pairing functional dependence on charge polarization of fission fragments derived by time-dependent mean-field calculation
江幡修一郎; 奥村森; 石塚知香子; 千葉敏
日本原子力学会秋の大会予稿集(CD-ROM), Volume：2020, 2020
J-Global ID：202102263065845506 - Mean-field calculation for the charge polarization of fission fragments and its evaluation
江幡修一郎; 奥村森; 石塚知香子; 千葉敏
日本物理学会講演概要集(CD-ROM), Volume：75, Number：2, 2020
ISSN：2189-079X, J-Global ID：202102270592341116 - Analysis of α-A elastic scattering with density-dependent α-N effective interaction
椿原康介; 江幡修一郎; 堀内渉; 古本猛憲
日本物理学会講演概要集(CD-ROM), Volume：75, Number：2, 2020
ISSN：2189-079X, J-Global ID：202102279349397572 - Activation cross sections of α-induced reactions on natZn for Ge and Ga production
M. Aikawa; M. Saito; S. Ebata; Y. Komori; H. Haba
RIKEN Accelerator Progress Report, Volume：52, First page：23, Oct. 2019, [Reviewed]
English, Report research institution - α-cluster structures and dipole excitations in medium-heavy nuclei
NAKAO M.; UMEHARA H.; EBATA S.; OKUNO T.; TANI F.; HIRATA Y.; ITO M.; ITO M.
日本原子力研究開発機構JAEA-Conf(Web), Number：2019-001, 2019
J-Global ID：202002210044818053 - Microscopic Calculations for the Charge Polarization of Fission Fragments
EBATA S.; OKUMURA S.; ISHIZUKA C.; CHIBA S.
日本原子力研究開発機構JAEA-Conf(Web), Number：2019-001, 2019
J-Global ID：202002220718926140 - 核変換による高レベル放射性廃棄物の大幅な低減・資源化(5-5)密度汎関数計算による核構造データ
中務孝; 中務孝; 江幡修一郎; 鷲山公平
Volume：2019, 2019
J-Global ID：201902222864506524 - 核変換による高レベル放射性廃棄物の大幅な低減・資源化(5-2)ImPACT核データに基づくPHITSシミュレーション
合川正幸; ICHINKHORLOO Dagvadorj; 江幡修一郎
Volume：2019, 2019
J-Global ID：201902239603281243 - 核変換による高レベル放射性廃棄物の大幅な低減・資源化(5-1)LLFP核変換核データライブラリーJENDL/ImPACT-2018の開発
岩本修; 国枝賢; 古立直也; 湊太志; 岩本信之; 中山梓介; 江幡修一郎; 西原健司; 吉田亨; 渡辺幸信; 仁井田浩二
Volume：2019, 2019
J-Global ID：201902272467401077 - 実時間平均場模型によるZ=120超重元素合成の理論研究
江幡修一郎; 千葉敏; IVANYUK Fedir; LITNEVSKY Vladimir
Volume：2019, 2019
J-Global ID：201902284481390531 - Study on formation mechanisms of Z=120 elements with a hybrid model
Chiba Satoshi; Ishii Yoko; Ebata Shuichiro; Iwata Yoritaka; Inakura Tsunenori; Ivanyuk Fedir; Litnevsky Vladimir; Okumura Shin; Ono Akira; Kimura Masaaki
Meeting Abstracts of the Physical Society of Japan, Volume：74, Number：1, First page：196, Last page：196, 2019
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.74.1.0_196
DOI ID：10.11316/jpsgaiyo.74.1.0_196, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：201902216041485862, CiNii Articles ID：130008146928 - Coexistence of low-energy isovector and isoscalar dipole modes
Inakura Tsunnenori; Ebata Shuichiro
Meeting Abstracts of the Physical Society of Japan, Volume：74, Number：2, First page：161, Last page：161, 2019
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.74.2.0_161
DOI ID：10.11316/jpsgaiyo.74.2.0_161, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：202002230815257955, CiNii Articles ID：130008151925 - Toward the construction of alpha-nucleus global optical potential
Tsubakihara Kohsuke; Ebata Shuichiro; Horiuchi Wataru; Furumoto Takenori
Meeting Abstracts of the Physical Society of Japan, Volume：74, Number：2, First page：167, Last page：167, 2019
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.74.2.0_167
DOI ID：10.11316/jpsgaiyo.74.2.0_167, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：202002253448583265, CiNii Articles ID：130008152036 - 微視的平均場模型によるU-236の分裂経路の研究
藤尾和樹; 江幡修一郎; 千葉敏
Volume：2019, 2019
J-Global ID：202002215539571539 - 微視的理論計算で導出するPu-240核分裂片の荷電偏極
江幡修一郎; 奥村森; 石塚知香子; 千葉敏
Volume：2019, 2019
J-Global ID：202002238637275248 - 東京工業大学 原子力規制人材育成プログラム「原子力安全・核セキュリティ・保障措置教育の体系化と実践」(4)2019年度実施状況
江幡修一郎; HAN Chi Young; 相楽洋; 松本義久; 千葉敏; 林崎規託; 池上雅子; 尾本彰; 竹下健二; 片渕竜也; 木倉宏成; 鷹尾康一郎
Volume：40th, 2019
J-Global ID：202002253376087269 - 東工大における原子力規制人材育成プログラム「原子力安全・核セキュリティ・保障措置教育の体系化と実践」(5)放射線災害対応実習
HAN Chi Young; 江幡修一郎; 片渕竜也; 千葉敏; 相楽洋
Volume：40th, 2019
J-Global ID：202002264918139030 - Monte-Carlo Simulation of Transmutation based on Experimental Nuclear Data
S. Ebata; D. Ichinkhorloo; M. Aikawa
RIKEN Accelerator Progress Report, Volume：51, First page：105, Oct. 2018, [Reviewed]
English, Report research institution - EXFOR Compilation of RIBF data in 2017
D. Ichinkhorloo; M. Aikawa; S. Ebata; S. Imai; S. Jagjit; N. Otuka; M. Kimura
RIKEN Accelerator Progress Report, Volume：51, First page：104, Oct. 2018, [Reviewed]
English, Report research institution - Study of α cluster structures in medium-heavy nuclei
NAKAO M.; UMEHARA H.; EBATA S.; ITO M.; ITO M.
日本原子力研究開発機構JAEA-Conf(Web), Number：2018-001, 2018
J-Global ID：201902237530028069 - Study of α cluster structures in 18O by Orthogonality Condition Model
Nakao M.; Umehara H.; Ito M.; Ebata S.
Meeting Abstracts of the Physical Society of Japan, Volume：73, Number：1, First page：207, Last page：207, 2018
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.73.1.0_207
DOI ID：10.11316/jpsgaiyo.73.1.0_207, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：201802235297203093, CiNii Articles ID：130007647118 - Ca同位体の中性子スキン厚
田中聖臣; 武智麻耶; 本間彰; 鈴木健; 田中悠太郎; 福田光順; 西村太樹; 森口哲朗; AHN D.S.; AIMAGANBETOV A.S.; AIMAGANBETOV A.S.; 天野将道; 荒川裕樹; BAGCHI S.; BEHR K.-H.; BURTEBAYEV N.; 親跡和弥; DU H.; 江幡修一郎; 藤井朋也; 福田直樹; GEISSEL H.; 堀太地; 堀内渉; 星野寿春; 伊五澤涼; 池田彩夏; 稲辺尚人; 猪股玖美; 板橋健太; 泉川卓司; 上岡大起; 神田直人; 加藤郁磨; KENZHINA I.; KORKULU Z.; KUK Ye.; KUK Ye.; 日下健祐; 松多健策; 三原基嗣; 宮田恵理; 長江大輔; 中村翔健; NASSURLLA M.; 西室国光; 西塚賢治; 大甕舜一朗; 大西康介; 大竹政雄; 大坪隆; ONG H.J.; 小沢顕; PROCHAZKA A.; 櫻井博儀; SCHEIDENBERGER C.; 清水陽平; 杉原貴信; 炭竃聡之; 鈴木伸司; 鈴木宏; 竹田浩之; 田中良樹; 和田太郎; 若山清志; 八木翔一; 山口貴之; 柳原陸斗; 柳澤善行; 吉田光一; ZHOLDYBAYEV T.K.
Volume：73, Number：1, 2018
ISSN：2189-079X, J-Global ID：201802262815062920 - 4次元ランジュバン模型に基づく荷電偏極の評価
石塚知香子; 江幡修一郎; 千葉敏; CARJAN N.
Volume：73, Number：1, 2018
ISSN：2189-079X, J-Global ID：201802285294773367 - 微視的模型による核分裂片の荷電偏極の計算
江幡修一郎; 石塚知香子; 奥村森; 千葉敏
Volume：2018, 2018
J-Global ID：201802267558191434 - Activation cross sections of alpha-induced reactions on natural zinc for 68Ge production
M. Aikawa; M. Saito; S. Ebata; Y. Komori; H. Haba
Proceedings of the 2016 Symposium on Nuclear Data, Number：2017-001, First page：153, Last page：156, Jan. 2018, [Reviewed], [Domestic magazine]
English
J-Global ID：201802222736185553 - Report on EXFOR Compilation 2016 from the RIBF
D. Ichinkhorloo; M. Aikawa; S. Ebata; S. Jagjit; M. Kimura; N. Otuka; A. Sarsembayeva
RIKEN Accelerator Progress Report, Volume：50, First page：106, Nov. 2017, [Reviewed]
English, Report research institution - Activation cross sections of alpha-induced reactions on natZn for 68Ge production
M. Aikawa; M. Saito; S. Ebata; Y. Komori; H. Haba
RIKEN Accelerator Progress Report, Volume：50, First page：257, Nov. 2017, [Reviewed]
English, Report research institution - Thick-target transmission method for excitation functions of interaction cross sections
M. Aikawa; S. Ebata; S. Imai
RIKEN Accelerator Progress Report, Volume：50, First page：105, Nov. 2017, [Reviewed]
English, Report research institution - A new Java-based EXFOR editor
A. Sarsembayeva; S. Ebata; M. Chiba; N. Otuka; M. Aikawa
Proceedings of the 7th AASPP Workshop on Asian Nuclear Reaction Database Development, First page：69, Last page：75, Jun. 2017, [International magazine]
English - Simulation of thick-target transmission method for interaction cross sections of 93Zr on 12C
M. Aikawa; S. Ebata; S. Imai
RIKEN Accelerator Progress Report, Volume：49, First page：88, Mar. 2017, [Reviewed]
English, Report research institution - Nuclear data study for the development of transmutation technology
S. Ebata; M. Aikawa; S. Imai
RIKEN Accelerator Progress Report, Volume：49, First page：89, Mar. 2017, [Reviewed]
English, Report research institution - Compilation of nuclear reaction data from the RIBF in 2015
D. Ichinkhorloo; M. Aikawa; S. Ebata; S. Imai; N. Otuka; A. Sarsembayeva; B. Zhou
RIKEN Accelerator Progress Report, Volume：49, First page：90, Mar. 2017, [Reviewed]
English, Report research institution - New EXFOR editor: a review of recent developments
A. Sarsembayeva; S. Imai; S. Ebata; M. Chiba; N. Otuka; M. Aikawa
RIKEN Accelerator Progress Report, Volume：49, First page：91, Mar. 2017, [Reviewed]
English, Report research institution - Numerical method of orthogonality condition model
Nakao M.; Umehara H.; Ito M.; Ebata S.
Meeting Abstracts of the Physical Society of Japan, Volume：72.2, First page：158, Last page：158, 2017
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.72.2.0_158
DOI ID：10.11316/jpsgaiyo.72.2.0_158, eISSN：2189-0803, CiNii Articles ID：130007508479 - Study of octupole correlation in even-even nuclei by the the constrained three-dimensional Hartree-Fock plus BCS model
Ebata Shuichiro; Nakatsukasa Takashi
Meeting Abstracts of the Physical Society of Japan, Volume：72, Number：1, First page：238, Last page：238, 2017
前大会までに三次元座標空間でHF+BCS模型を用いて偶々核を系統的に調べた。八重極変形を基底状態に持つ核種が、希土類元素(Z=54-70)とZ=86を超える特徴的な質量領域が現れる事が分かった。講演ではこれ等異なる質量領域の八重極変形相関の差を、拘束付きHF+BCS模型を用いて議論する。
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.72.1.0_238
DOI ID：10.11316/jpsgaiyo.72.1.0_238, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：201702229917400383, CiNii Articles ID：130006710137 - Coulomb multipole excitations in total reaction cross section
Horiuchi Wataru; Hatakeyama Shinya; Ebata Shuichiro; Suzuki Yasuyuki
Meeting Abstracts of the Physical Society of Japan, Volume：72, Number：1, First page：236, Last page：236, 2017
全反応断面積は原子核半径を調べる上で有用な観測量として知られているが、重い原子核同士の衝突では核力励起以外にもクーロン励起が重要となってくる。本講演では錫同位体を例にとり、クーロン多重極励起の効果を系統的に分析し、そこから得られる核構造の情報について議論する。
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.72.1.0_236
DOI ID：10.11316/jpsgaiyo.72.1.0_236, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：201702235692357449, CiNii Articles ID：130006710174 - Study of alpha cluster structure in mirror system of 18O and 18Ne
Nakao M.; Umehara H.; Sonoda S.; Ebata S.; Ito M.
Meeting Abstracts of the Physical Society of Japan, Volume：72, Number：1, First page：160, Last page：160, 2017
!LaTeX$\alpha$クラスター構造は軽い原子核の励起状態に現れることがよく知られている。$\alpha$クラスター状態の特徴は，$\alpha$粒子は弱束縛であるため，その波動関数が遠方にまで広がることである。したがって，クーロン力の効果が抑制されるため，その抑制が鏡映系のエネルギー準位に反映されることが予想される。我々は，$^{18}$O-$^{18}$Neの鏡映系に注目し，$\alpha{}+^{14}$C, $\alpha +^{14}$Oクラスター構造の発現と，クーロン抑制の効果を分析した。本講演では，これらの結果について報告する。
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.72.1.0_160
DOI ID：10.11316/jpsgaiyo.72.1.0_160, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：201702240700833697, CiNii Articles ID：130006709346 - Analysis of alpha elastic scattering by double folding model
Umehara H.; Nakao M.; Sonoda S.; Ebata S.; Ito M.
Meeting Abstracts of the Physical Society of Japan, Volume：72, Number：1, First page：217, Last page：217, 2017
Double folding modelは原子核間相互作用を記述する標準的な模型であり、特にDDM3Yを有効核力としたfolding potentialは軽核の弾性散乱を記述することに成功している。しかしながら!LaTeX$\alpha$散乱についてはポテンシャルの深さが浅すぎることが指摘されており、現在まで未解決である。一方、近年、!LaTeX$\alpha$ポテンシャルの改良方法として標的核密度近似(TDA)が考案されている。本講演ではDDM3Y相互作用にTDA近似を適用し、!LaTeX$\alpha$弾性散乱への適合性を議論する。
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.72.1.0_217
DOI ID：10.11316/jpsgaiyo.72.1.0_217, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：201702214049300837, CiNii Articles ID：130006709988 - LLFP安定核種化・短寿命化のための核変換法の開発(14)微視的理論を用いた断面積計算
中務孝; 江幡修一郎; 緒方一介; 蓑茂工将; 鷲山公平
Volume：2017, 2017
J-Global ID：201702248621368342 - LLFP安定核種化・短寿命化のための核変換法の開発(12)ImPACT核データ収集とPHITSインターフェイス
江幡修一郎; 合川正幸; 仁井田浩二
Volume：2017, 2017
J-Global ID：201702260211712696 - Neutron-skin thickness determines density dependence of surface tension in a nuclear droplet
Horiuchi Wataru; Ebata Shuichiro; Iida Kei
Meeting Abstracts of the Physical Society of Japan, Volume：72, Number：2, First page：112, Last page：112, 2017
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.72.2.0_112
DOI ID：10.11316/jpsgaiyo.72.2.0_112, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：201702218584261104, CiNii Articles ID：130007509615 - Construction of global optical potential extended in unstable nuclear region for nucleon-nucleus systems
Furumoto T.; Tsubakihara K.; Ebata S.; Horiuchi W.
Meeting Abstracts of the Physical Society of Japan, Volume：72, Number：2, First page：217, Last page：217, 2017
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.72.2.0_217
DOI ID：10.11316/jpsgaiyo.72.2.0_217, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：201702277382075518, CiNii Articles ID：130007507567 - Compilation of Nuclear Reaction Data in JCPRG
D.Ichinkhorloo; M. Aikawa; M. Kimura; A. Sarsembayeva; S. Ebata; N. Otsuka; K.Kato
Mongolian Journal of Physics, Volume：2, First page：494, Last page：496, Dec. 2016
English - Current status in development of new EXFOR editor
A. Sarsembayeva; S. Imai; S. Ebata; M. Chiba; K. Kato; N. Otuka; M. Aikawa
Proceedings of the 2015 Symposium on Nuclear Data, Number：2016-004, First page：81, Last page：86, Sep. 2016, [Reviewed]
English
J-Global ID：201602289490125687 - Interaction cross sections using thick-target transmission method
AIKAWA Masayuki; EBATA Shuichiro; IMAI Shotaro
日本原子力研究開発機構JAEA-Conf(Web), Number：2016-004, First page：77‐80 (WEB ONLY), Sep. 2016
English
J-Global ID：201602271629816462 - A new EXFOR editor system: Java version of HENDEL
A. Sarsembayeva; S. Imai; S. Ebata; M. Chiba; K. Kato; N. Otuka; M. Aikawa
Proceedings of the 2014 Symposium on Nuclear Data, Number：2015-003, First page：281, Last page：283, Mar. 2016, [Reviewed]
English
J-Global ID：201602298252252865 - International Collaboration of Hokkaido University Nuclear Reaction Data Centre
AIKAWA Masayuki; EBATA Shuichiro; FURUTACHI Naoya; ICHINKHORLOO Dagvadorj; IMAI Shotaro; KATO Kiyoshi; SARSEMBAYEVA Aiganym; ZHOU Bo; OTUKA Naohiko
日本原子力研究開発機構JAEA-Conf(Web), Number：2015-003, First page：8 (WEB ONLY), Mar. 2016
English
J-Global ID：201602225088517693 - Thick-target yields on radioactive targets estimated by inverse kinematics
IMAI Shotaro; AIKAWA Masayuki; EBATA Shuichiro
日本原子力研究開発機構JAEA-Conf(Web), Number：2015-003, First page：40 (WEB ONLY), Mar. 2016
English
J-Global ID：201602258153616683 - 21aAC-11 Systematic caluculation for the deformation of even-even nuclei by the three-dimensional Hartree-Fock plus BCS model
Ebata Shuichiro; Nakatsukasa Takashi
Meeting Abstracts of the Physical Society of Japan, Volume：71, Number：1, First page：232, 2016
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.71.1.0_232
DOI ID：10.11316/jpsgaiyo.71.1.0_232, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：201602269031386409, CiNii Articles ID：110010056280 - Monte Carlo simulation for thick-target yields deduced from inverse kinematics
S. Imai; M. Aikawa; S. Ebata
Proceedings of the 6th AASPP Workshop on Asian Nuclear Reaction Database Development, First page：46, Last page：48, Jan. 2016
English - Upgrade of Japanese editor for EXFOR compilation
A. Sarsembayeva; S. Imai; S. Ebata; M. Chiba; K. Kato; N. Otuka; M. Aikawa
Proceedings of the 6th AASPP Workshop on Asian Nuclear Reaction Database Development, First page：39, Last page：42, Jan. 2016
English - Development of a new EXFOR editor system
A. Sarsembayeva; S. Imai; S. Ebata; M. Chiba; K. Kato; N. Otuka; M. Aikawa
RIKEN Accelerator Progress Report, Volume：48, First page：97, Oct. 2015, [Reviewed]
English, Report research institution - Thick-target yields derived from inverse kinematics toward transmutation
S. Imai; M. Aikawa; S. Ebata
RIKEN Accelerator Progress Report, Volume：48, First page：98, Oct. 2015, [Reviewed]
English, Report research institution - Nuclear data format suitable simultaneously for databases, experimentalists, and users
M. Aikawa; M. Chiba; S. Ebata; T. Katayama; K. Kato; A. Makinaga; H. Noto; K. Tsubakihara
RIKEN Accelerator Progress Report, Volume：47, First page：70, Mar. 2015, [Reviewed]
English, Report research institution - JCPRG-RNC joint workshop on nuclear data
M. Aikawa; A. Makinaga; S. Ebata; K. Kato; A. Kohama; H. Otsu; H. Sakurai
RIKEN Accelerator Progress Report, Volume：47, First page：73, Mar. 2015, [Reviewed]
English, Report research institution - Compilation of nuclear reaction data from RIBF
A. Makinaga; V. Devi; M. Aikawa; S. Ebata; N. Furutachi; D. Ichinkhorloo; K. Kato; M. Odsuren; N. Otuka; K. Tsubakihara
RIKEN Accelerator Progress Report, Volume：47, First page：69, Mar. 2015, [Reviewed]
English, Report research institution - Compilation status and research topics in Hokkaido University Nuclear Reaction Data Centre
M. Aikawa; S. Ebata; N. Furutachi; D. Ichinkhorloo; S. Imai; K. Kato; A. Sarsembayeva; B. Zhou; N. Otuka
Proceedings of the 5th AASPP Workshop on Asian Nuclear Reaction Database Development, First page：13, Last page：14, Feb. 2015
English - Recent Activity of Central Asian Nuclear Reaction Database and Asian Collaboration on Nuclear Reaction Data Compilation
Meruert Takibayeva; Venera Kurmangalieva; Nurgali Takibayev; Masayuki Aikawa; Naoya Furutachi; Kiyoshi Kato; Ayano Makinaga; Vidya Devi; Shuichiro Ebata; Dagvadorj Ichinkhorloo; Myagmarjav Odsuren; Kohsuke Tsubakihara; Toshiyuki Katayama; Naohiko Otuka
Proceedings of the 2013 Symposium on Nuclear Data, First page：157, Feb. 2015, [Reviewed]
English - 逆運動学に基づく放射性ターゲットに対する厚い標的核の核反応生成量の評価
今井匠太朗; 合川正幸; 江幡修一郎
Volume：2015, 2015
J-Global ID：201502259072937026 - 正準基底表示時間依存ハートレーフォックボゴリューボフ理論と線形応答計算
江幡修一郎
Volume：60, Number：1, First page：42, Last page：54, 2015
Japanese
ISSN：0367-4169, J-Global ID：201502217032456706, CiNii Books ID：AN00077895 - 25aSF-8 Nuclear size properties of medium to heavy nuclei with total reaction cross sections
Horiuchi W.; Ebata S.; Hatakeyama S.; Suzuki Y.
Meeting Abstracts of the Physical Society of Japan, Volume：70, Number：2, First page：218, Last page：218, 2015
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.70.2.0_218
DOI ID：10.11316/jpsgaiyo.70.2.0_218, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：201602202273909361, CiNii Articles ID：110010028518, CiNii Books ID：AA12721570 - 28aSP-3 Evaluation of the incompressibility in finite nuclear system by the systematic calculation for the giant monopole resonance
Ebata Shuichiro
Meeting Abstracts of the Physical Society of Japan, Volume：70, Number：2, First page：189, Last page：189, 2015
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.70.2.0_189
DOI ID：10.11316/jpsgaiyo.70.2.0_189, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：201602213841430884, CiNii Articles ID：110010030770, CiNii Books ID：AA12721570 - 21aCD-6 Low-lying 2^+ states generated by pn-quadrupole correlation and N = 28 shell quenching
Ebata Shuichiro; Kimura Masaaki
Meeting Abstracts of the Physical Society of Japan, Volume：70, Number：1, First page：238, Last page：238, 2015
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.70.1.0_238
DOI ID：10.11316/jpsgaiyo.70.1.0_238, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：201502205968424646, CiNii Articles ID：110009990521, CiNii Books ID：AA12721570 - 21pCA-7 Developments of the canonical-basis time-dependent Hartree-Fock-Bogoliubov theory
Ebata Shuichiro
Meeting Abstracts of the Physical Society of Japan, Volume：70, Number：1, First page：279, Last page：280, 2015
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.70.1.0_279
DOI ID：10.11316/jpsgaiyo.70.1.0_279, ISSN：2189-079X, eISSN：2189-0803, J-Global ID：201502216053981901, CiNii Articles ID：110009990541, CiNii Books ID：AA12721570 - Compilation of nuclear reaction data from the RIBF
D. Ichinkhorloo; M. Aikawa; S. Ebata; N. Furutachi; S. Imai; K. Kato; A. Makinaga; M. Odsren; N. Otsuka; A. Sarsembayeva; B. Zhou
RIKEN Accel. Prog. Rep., Volume：48, First page：99, 2015, [Reviewed]
English, Introduction research institution - 30aTB-8 Multiple-scattering effects and target nucleus dependence of nucleus-nucleus scattering
Hatakeyama S.; Horiuchi W.; Ebata S.; Kimura M.
Meeting abstracts of the Physical Society of Japan, Volume：69, Number：1, First page：64, Last page：64, 05 Mar. 2014
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.69.1.1.0_64_3
DOI ID：10.11316/jpsgaiyo.69.1.1.0_64_3, ISSN：1342-8349, eISSN：2189-0803, J-Global ID：201402207960297020, CiNii Articles ID：110009833787, CiNii Books ID：AA11439205 - 30aTB-9 Pairing effects in different nuclei collision
Ebata Shuichiro
Meeting abstracts of the Physical Society of Japan, Volume：69, Number：1, First page：64, Last page：64, 05 Mar. 2014
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.69.1.1.0_64_4
DOI ID：10.11316/jpsgaiyo.69.1.1.0_64_4, ISSN：1342-8349, eISSN：2189-0803, J-Global ID：201402225941031378, CiNii Articles ID：110009833788, CiNii Books ID：AA11439205 - International and Asian Collaboration on Nuclear Data
M. Aikawa; S. Ebata; N. Furutachi; D. Ichinkhorloo; K. Kato; A. Makinaga; V. Devi; M. Odsuren; N. Otsuka; M. Takibayeva; K. Tsubakihara
Proceedings of the 4th Asian Nuclear Reaction Database Development Workshop, First page：54, Last page：55, Feb. 2014
English - E1 strength in calcium isotopes in view of shell-model calculations
SHIMIZU N.; UTSUNO Y.; UTSUNO Y.; EBATA S.; HONMA M.; MIZUSAKI T.; OTSUKA T.; OTSUKA T.
CNS Report, Number：92, 2014
ISSN：1343-2230, J-Global ID：201402243475816538 - The behavior of PDR and E1 polarizability with respect to neutron skin-thickness
EBATA S.; NAKATSUKASA T.
CNS Report, Number：92, 2014
ISSN：1343-2230, J-Global ID：201402286815241862 - Se-80核共鳴蛍光散乱実験によるSe-79核変換断面積の評価
牧永あや乃; SCHWENGNER R.; MASSARCZYK R.; ANDERS M.; ROEDER M.; AL-ABDULLAH T.; JOHN R.; MUELER S.; SCHMIDT K.; HANNASKE R.; WAGNER A.; 大津秀暁; 江幡修一郎
Volume：2014, 2014
J-Global ID：201402239565624940 - Glauber理論による陽子-原子核散乱の解析
畠山慎也; 堀内渉; 江幡修一郎; 木村真明
Volume：58, Number：Supplement 2, 2014
ISSN：0367-4169, J-Global ID：201402278335778979 - Multiple-scattering effects in proton- and alpha-nucleus reactions with Glauber theory
S. Hatakeyama; S. Ebata; W. Horiuchi; M. Kimura
3RD INTERNATIONAL WORKSHOP ON STATE OF THE ART IN NUCLEAR CLUSTER PHYSICS, Volume：569, Number：1, 2014, [Reviewed]
We study the total reaction and elastic differential cross sections for proton-nucleus and He-4-nucleus reactions in the framework of the Glauber theory which describes multiple-scattering processes. The input wave functions are obtained using the Skyrme-Hartree-Fock method and prepared for a wide range of mass numbers, O, Ca, Ni, Sn, and Pb isotopes. The theory reproduces experimental data very well. An effect of the multiple scattering is discussed by comparing with a standard optical-limit approximation. We see that the multiple-scattering effects play a crucial role, especially in enhancing the elastic differential cross sections at large scattering angles.
IOP PUBLISHING LTD, English
DOI：https://doi.org/10.1088/1742-6596/569/1/012050
DOI ID：10.1088/1742-6596/569/1/012050, ISSN：1742-6588, J-Global ID：201702204199786708, Web of Science ID：WOS:000347871100050 - Compilation and Evaluation of Nuclear Reaction Data
D. Ichinkhorloo; M. Aikawa; V. Devi; S. Ebata; N. Furutachi; K. Kato; A. Makinaga; M. Odsuren; N. Otuka; M. Takibayeva; K. Tsubakihara
Proceedings of the 5th International Conference on Contemporary Physics, First page：255, Dec. 2013
English - Analysis of proton-nucleus scattering by Glauber theory
Hatakeyama S.; Horiuchi W.; Ebata S.; Kimura M.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：2, First page：37, Last page：37, 26 Aug. 2013
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.68.2.1.0_37_4
DOI ID：10.11316/jpsgaiyo.68.2.1.0_37_4, ISSN：1342-8349, eISSN：2189-0803, J-Global ID：201302252559279181, CiNii Articles ID：110009754258, CiNii Books ID：AA11439205 - 27aHE-6 Systematic study of the low-lying E1 mode
Ebata S.; Nakatsukasa T.; Inakura T.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：1, First page：88, Last page：88, 26 Mar. 2013
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.68.1.1.0_88_3
DOI ID：10.11316/jpsgaiyo.68.1.1.0_88_3, ISSN：1342-8349, eISSN：2189-0803, J-Global ID：201302249354918300, CiNii Articles ID：110009642740, CiNii Books ID：AA11439205 - 29aHE-4 Approach of Time-Dependent Mean-Field Theory to Nuclear Reaction
Ebata Shuichiro
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：1, First page：65, Last page：65, 26 Mar. 2013
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.68.1.1.0_65_2
DOI ID：10.11316/jpsgaiyo.68.1.1.0_65_2, ISSN：1342-8349, eISSN：2189-0803, J-Global ID：201302266244193956, CiNii Articles ID：110009642659, CiNii Books ID：AA11439205 - Systematic study of low-lying E1 modes using a time-dependent mean field theory
EBATA S.; NAKATSUKASA T.; INAKURA T.
CNS Report, Number：90, 2013
ISSN：1343-2230, J-Global ID：201302249162025425 - TIME-DEPENDENT DENSITY-FUNCTIONAL STUDIES ON STRENGTH FUNCTIONS IN NEUTRON-RICH NUCLEI
S. Ebata; T. Inakura; T. Nakatsukasa
FISSION AND PROPERTIES OF NEUTRON-RICH NUCLEI, ICFN5, First page：635, Last page：642, 2013
The electric dipole (E1) strength functions have been systematically calculated based on the time-dependent density functional theory (TDDFT), using the finite amplitude method and the real-time approach to the TDDFT with pairing correlations. The low-energy E1 strengths in neutron-rich isotopes show peculiar behaviors, such as sudden enhancement and reduction, as functions of the neutron numbers. They seem to be due to the interplay between the neutron shell effect and the deformation effect.
WORLD SCIENTIFIC PUBL CO PTE LTD, English, Technical report
Web of Science ID：WOS:000345697700107 - Systematic investigation of E1 strength for the isotopes from Z=28 to 50
Shuichiro Ebata; Takashi Nakatsukasa; Tsunenori Inakura
INTERNATIONAL SYMPOSIUM ON EXOTIC NUCLEAR STRUCTURE FROM NUCLEONS (ENSFN 2012), Volume：445, 2013, [Reviewed]
We carry out a systematic study of electric dipole mode (E1) for neutron-rich isotopes from nickel (Z=28) to tin (Z=50) using a time-dependent mean-field theory. Our time-dependent scheme is the canonical-basis time-dependent Hartree-Fock-Bogoliubov theory which can self-consistently describe nuclear dynamics with pairing correlation. We focus our discussion on the pygmy dipole resonance (PDR) and E1 polarizability. The correlation between neutron-skin thickness and PDR strongly depends on the neutron number, but the correlation between the skin thickness and E1 polarizability is much more stable.
IOP PUBLISHING LTD, English
DOI：https://doi.org/10.1088/1742-6596/445/1/012021
DOI ID：10.1088/1742-6596/445/1/012021, ISSN：1742-6588, eISSN：1742-6596, Web of Science ID：WOS:000323511100021 - Simulation of heavy ion collision using a time-dependent density functional theory including nuclear superfluidity
Shuichiro Ebata
24TH IUPAP CONFERENCE ON COMPUTATIONAL PHYSICS (IUPAP-CCP 2012), Volume：454, 2013, [Reviewed]
We carried out a simulation of heavy ion collision using a time-dependent density functional theory. We call it the canonical-basis time-dependent Hartree-Fock-Bogoliubov theory (Cb-TDHFB) which can describe nuclear dynamics in three-dimensional coordinate space, treating nuclear pairing correlation. We simulate O-20+O-20 collision using the Cb-TDHFB with a contact-type pairing functional, and show the behavior of gap energy which is decreasing and vibrating while colliding.
IOP PUBLISHING LTD, English
DOI：https://doi.org/10.1088/1742-6596/454/1/012054
DOI ID：10.1088/1742-6596/454/1/012054, ISSN：1742-6588, eISSN：1742-6596, Web of Science ID：WOS:000323968300055 - 11aSA-1 Application of Cb-TDHFB to heavy ion collision II
Ebata Shuichiro
Meeting abstracts of the Physical Society of Japan, Volume：67, Number：2, First page：28, Last page：28, 24 Aug. 2012
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.67.2.1.0_28_3
DOI ID：10.11316/jpsgaiyo.67.2.1.0_28_3, ISSN：1342-8349, eISSN：2189-0803, J-Global ID：201202245474838463, CiNii Articles ID：110009599476, CiNii Books ID：AA11439205 - Canonical-Basis Time-Dependent Mean-Field Theory and Linear Response in Superfluid Nuclei
Nakatsukasa Takashi; Ebata Shuichiro
日本物理学会誌, Volume：67, Number：4, First page：243, Last page：247, 05 Apr. 2012
The superconducting in metal is a quantum phenomenon that is realized by the condensation of the electron pairs at low temperature. In heavy nuclei, protons and neutrons also exhibit properties of the superfluidity caused by their pair condensation. The numerical simulation of reactions for such superfluid nuclei was considered to be impractical, because of its enormous required computational resources. Recently, we have developed a new approach, "canonical-basis time-dependent mean-field theory", which succeeds to significantly reduce the computational cost. Using this new method, it is ex...
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/butsuri.67.4_243
DOI ID：10.11316/butsuri.67.4_243, ISSN：0029-0181, eISSN：2423-8872, J-Global ID：201202269348724742, CiNii Articles ID：110009437177, CiNii Books ID：AN00196952 - 27pXB-4 Application of Cb-TDHFB to heavy ion collision
Ebata Shuichiro
Meeting abstracts of the Physical Society of Japan, Volume：67, Number：1, First page：69, Last page：69, 05 Mar. 2012
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.67.1.1.0_69_3
DOI ID：10.11316/jpsgaiyo.67.1.1.0_69_3, ISSN：1342-8349, eISSN：2189-0803, J-Global ID：201202293971230643, CiNii Articles ID：110009565081, CiNii Books ID：AA11439205 - Linear-response calculation in the time-dependent density functional theory
Takashi Nakatsukasa; Tsunenori Inakura; Paolo Avogadro; Shuichiro Ebata; Koichi Sato; Kazuhiro Yabana
ORIGIN OF MATTER AND EVOLUTION OF GALAXIES 2011, Volume：1484, First page：142, Last page：149, 2012, [Reviewed]
Linear response calculations based on the time-dependent density-functional theory are presented. Especially, we report results of the finite amplitude method which we have recently proposed as an alternative and feasible approach to the (quasiparticle-)random-phase approximation. Calculated properties of the giant resonances and low-energy E1 modes are discussed. We found a universal linear correlation between the low-energy E1 strength and the neutron skin thickness.
AMER INST PHYSICS, English
DOI：https://doi.org/10.1063/1.4763387
DOI ID：10.1063/1.4763387, ISSN：0094-243X, Web of Science ID：WOS:000312157700024 - Systematic study of low-lying E1 strength using the time-dependent mean field theory
S. Ebata; T. Nakatsukasa; T. Inakura
ORIGIN OF MATTER AND EVOLUTION OF GALAXIES 2011, Volume：1484, First page：427, Last page：429, 2012
We carry out systematic investigation of electric dipole (E1) mode from light to heavy nuclei, using a new time-dependent mean field theory: the Canonical-basis Time-Dependent Hartree-Fock-Bogoliubov (Cb-TDHFB) theory. The Cb-TDHFB in the three-dimensional coordinate space representation can deal with pairing correlation and any kind of deformation in the time-dependent framework. We report the neutron-number dependence of the low-energy E1 mode for light (A < 40) and heavy isotopes (A > 100) around N = 82.
AMER INST PHYSICS, English, Technical report
DOI：https://doi.org/10.1063/1.4763442
DOI ID：10.1063/1.4763442, ISSN：0094-243X, Web of Science ID：WOS:000312157700079 - Study of pygmy dipole resonance with a new time-dependent mean field theory
Shuichiro Ebata; Takashi Nakatsukasa; Tsunenori Inakura
RUTHERFORD CENTENNIAL CONFERENCE ON NUCLEAR PHYSICS, 2011, Volume：381, 2012, [Reviewed]
We carry out a systematic investigation on the low-energy electric dipole strength, which is often called pygmy dipole resonances (PDR), using the canonical-basis time-dependent Hartree-Fock-Bogoliubov (Cb-TDHFB) method. The Cb-TDHFB is a new method which is derived from TDHFB with an approximation analogous to the BCS theory that the pair potential is assumed to be diagonal in the time-dependent canonical basis. We apply the method to linear-response calculation for even-even nuclei. We report the neutron-number dependence of PDR in light (A < 70) and heavy isotopes (A > 100) around N = 82.
IOP PUBLISHING LTD, English
DOI：https://doi.org/10.1088/1742-6596/381/1/012104
DOI ID：10.1088/1742-6596/381/1/012104, ISSN：1742-6588, eISSN：1742-6596, Web of Science ID：WOS:000316303200105 - 18pSF-11 Systematic study using Cb-TDHFB for the isovector dipole mode of heavy nuclei (A > 100) in the low-energy region
Ebata S.; Nakateukasa T.; Inakura T.
Meeting abstracts of the Physical Society of Japan, Volume：66, Number：2, First page：54, Last page：54, 24 Aug. 2011
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.66.2.1.0_54_4
DOI ID：10.11316/jpsgaiyo.66.2.1.0_54_4, ISSN：1342-8349, eISSN：2189-0803, J-Global ID：201102272363054005, CiNii Articles ID：110008757433, CiNii Books ID：AA11439205 - Canonical-basis TDHFBを用いた線形応答計算
江幡 修一郎; 中務 孝; 稲倉 恒法; 吉田 賢市; 橋本 幸男; 矢花 一浩
Soryushiron Kenkyu Electronics, Volume：119, Number：1, First page：A154, Last page：A161, 20 May 2011
我々は対相関を含んだ時間依存密度汎関数法に基づく新しい理論を開発し、比較的軽い核(A>70)から重い核(A<100)に対する線形応答計算を行った。この新しい理論は時間依存Hartree-Fock-Bogoliubov理論(TDHFB)を正準基底表示(Cb)に書き換え、対相関ポテンシャルに対角成分を扱う近似を導入する事で導出される。我々はこの理論をCb-TDHFBと呼ぶ。Cb-TDHFBの線形応答計算の結果はTDHFBの微小振幅近似であるQRPA計算と非常に良い一致を見せ、かつ計算コストを著しく下げる事に成功した。そしてCb-TDHFBを用いてアイソベクター双極子(IVD)振動の線形応答の系統的計算を実行し、特に低エネルギー部分において現われるピグミーモードについて対相関の効果を調べた。対相関の効果は基底状態の変形度と一粒子準位の占有確率の効果として現われ、ピグミーモードに反映される。
Soryushiron Kenkyu Editorial Office, Japanese
DOI：https://doi.org/10.24532/soken.119.1_A154
DOI ID：10.24532/soken.119.1_A154, ISSN：0371-1838, eISSN：2433-2895, CiNii Articles ID：110008661543, CiNii Books ID：AN00135266 - 25pGM-3 Cb-TDHFB calculations for isovector dipole mode of heavy nuclei (A>100)
Ebata,S; Nakatsukasa,T; Inakura,T; Hashimoto,Y; Yabana,K
Meeting abstracts of the Physical Society of Japan, Volume：66, Number：1, First page：49, Mar. 2011
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.66.1.1.0_49_4
DOI ID：10.11316/jpsgaiyo.66.1.1.0_49_4, ISSN：1342-8349, eISSN：2189-0803, J-Global ID：201102285284552908, CiNii Articles ID：110008609907 - SELF-CONSISTENT DESCRIPTION OF NUCLEAR PHOTOABSORPTION CROSS-SECTIONS
Takashi Nakatsukasa; Paolo Avogadro; Shuichiro Ebata; Tsunenori Inakura; Kenichi Yoshida
ACTA PHYSICA POLONICA B, Volume：42, Number：3-4, First page：609, Last page：618, Mar. 2011, [Reviewed]
Several approaches to photonuclear reactions, based on the time-dependent density-functional theory, have been developed recently. The standard linearization leads to the random-phase approximation (RPA) or the quasiparticle-random-phase approximation (QRPA). We have developed a parallelized QRPA computer program for axially deformed nuclei. We also present a feasible approach to the (Q)RPA calculation, that is the finite amplitude method (FAM). We show results of photoabsorption cross-sections for deformed nuclei using the QRPA and FAM calculations. Finally, the canonical-basis approach to the time-dependent Hartree-Fock-Bogoliubov method is presented, to demonstrate its feasibility and usefulness.
WYDAWNICTWO UNIWERSYTETU JAGIELLONSKIEGO, English
DOI：https://doi.org/10.5506/APhysPolB.42.609
DOI ID：10.5506/APhysPolB.42.609, ISSN：0587-4254, ORCID put code：113265781, SCOPUS ID：79953706593, Web of Science ID：WOS:000289009300034 - Canonical-basis TDHFBを用いた線形応答計算
江幡修一郎; 江幡修一郎; 中務孝; 中務孝; 稲倉恒法; 吉田賢市; 橋本幸男; 橋本幸男; 矢花一浩; 矢花一浩; 矢花一浩
Volume：119, Number：1, 2011
ISSN：0371-1838, J-Global ID：201102275541037836 - Linear response calculation using the canonical-basis TDHFB with a schematic pairing functional
Shuichiro Ebata; Takashi Nakatsukasa; Kazuhiro Yabana
INTERNATIONAL NUCLEAR PHYSICS CONFERENCE 2010 (INPC): NUCLEAR STRUCTURE, Volume：312, 2011, [Reviewed]
A canonical-basis formulation of the time-dependent Hartree-Fock-Bogoliubov (TDHFB) theory is obtained with an approximation that the pair potential is assumed to be diagonal in the time-dependent canonical basis. The canonical-basis formulation significantly reduces the computational cost. We apply the method to linear-response calculations for even-even nuclei. E1 strength distributions for proton-rich Mg isotopes are systematically calculated. The calculation suggests strong Landau damping of giant dipole resonance for drip-line nuclei.
IOP PUBLISHING LTD, English
DOI：https://doi.org/10.1088/1742-6596/312/9/092023
DOI ID：10.1088/1742-6596/312/9/092023, ISSN：1742-6588, Web of Science ID：WOS:000299349500023 - 12aSB-9 The researches of E1 mode of nuclei up to A=50 using Cb-TDHFB
Ebata,S; Nakatsukasa,T; Inakura,T; Hashimoto,Y; Yabana,K
Meeting abstracts of the Physical Society of Japan, Volume：65, Number：2, First page：33, Aug. 2010
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.65.2.1.0_33_2
DOI ID：10.11316/jpsgaiyo.65.2.1.0_33_2, ISSN：1342-8349, eISSN：2189-0803, J-Global ID：201002201236929378, CiNii Articles ID：110008096585 - 20pBH-12 The approach to medium mass nuclei using Skyrme TDHF+"BCS"
Ebata,S; Nakatsukasa,T; Inakura,T; Hashimoto,Y; Yabana,K
Meeting abstracts of the Physical Society of Japan, Volume：65, Number：1, First page：41, Last page：41, Mar. 2010
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.65.1.1.0_41_1
DOI ID：10.11316/jpsgaiyo.65.1.1.0_41_1, ISSN：1342-8349, eISSN：2189-0803, J-Global ID：201002290125039775, CiNii Articles ID：110007653965, CiNii Books ID：AA11439205 - Skyrme-TDHF+“BCS”を用いた線形応答計算~系統的な計算を目指して~
江幡修一郎
Volume：54, Number：Supplement 1, 2010
ISSN：0367-4169, J-Global ID：201002269698666961 - 30aXF-8 Linear Response calculations with Skyrme TDHF+BCS II
Ebata,S; Nakatsukasa,T; Inakura,T; Hashimoto,Y; Yabana,K
Meeting abstracts of the Physical Society of Japan, Volume：64, Number：1, First page：56, Mar. 2009
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.64.1.1.0_56_4
DOI ID：10.11316/jpsgaiyo.64.1.1.0_56_4, ISSN：1342-8349, eISSN：2189-0803, J-Global ID：200902240372386803, CiNii Articles ID：110007369931 - TDHF+“BCS”を用いた線形応答計算
江幡修一郎
Volume：53, Number：Supplement 1, 2009
ISSN：0367-4169, J-Global ID：200902293126757076 - 22aSA-7 Linear response calculations using the TDHF+BCS with the Skyrme force
Ebata,S; Nakatsukasa,T; Inakura,T; Hashimoto,Y; Yabana,K
Meeting abstracts of the Physical Society of Japan, Volume：63, Number：2, First page：40, Aug. 2008
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.63.2.1.0_40_3
DOI ID：10.11316/jpsgaiyo.63.2.1.0_40_3, ISSN：1342-8349, eISSN：2189-0803, J-Global ID：200902277625152040, CiNii Articles ID：110006982538 - 26pZH-5 "Calculation of Real-Time Response Function by TDHF+BCS" 2nd
Ebata,S; Nakatsukasa,T; Inakura,T; Hashimoto,Y; Yabana,K
Meeting abstracts of the Physical Society of Japan, Volume：63, Number：1, First page：64, Feb. 2008
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.63.1.1.0_64_4
DOI ID：10.11316/jpsgaiyo.63.1.1.0_64_4, ISSN：1342-8349, eISSN：2189-0803, J-Global ID：200902289799794839, CiNii Articles ID：110007139536 - 21aYE-7 Calculation of Real-Time Response Function by TDHF-BCS
Ebata,S; Nakatsukasa,T; Inakura,T; Hashimoto,Y; Yabana,K
Meeting abstracts of the Physical Society of Japan, Volume：62, Number：2, First page：31, Aug. 2007
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.62.2.1.0_31_2
DOI ID：10.11316/jpsgaiyo.62.2.1.0_31_2, ISSN：1342-8349, eISSN：2189-0803, J-Global ID：200902236719316242, CiNii Articles ID：110007194035
- 27pXB-4 Application of Cb-TDHFB to heavy ion collision
Ebata Shuichiro
Meeting abstracts of the Physical Society of Japan, Mar. 2012
Japanese - 18pSF-11 Systematic study using Cb-TDHFB for the isovector dipole mode of heavy nuclei (A > 100) in the low-energy region
Ebata S; Nakateukasa T; Inakura T
Meeting abstracts of the Physical Society of Japan, Aug. 2011
Japanese - 25pGM-3 Cb-TDHFB calculations for isovector dipole mode of heavy nuclei (A>100)
Ebata S; Nakatsukasa T; Inakura T; Hashimoto Y; Yabana K
Meeting abstracts of the Physical Society of Japan, Mar. 2011
Japanese - 12aSB-9 The researches of E1 mode of nuclei up to A=50 using Cb-TDHFB
Ebata S; Nakatsukasa T; Inakura T; Hashimoto Y; Yabana K
Meeting abstracts of the Physical Society of Japan, Aug. 2010
Japanese - 20pBH-12 The approach to medium mass nuclei using Skyrme TDHF+"BCS"
Ebata S; Nakatsukasa T; Inakura T; Hashimoto Y; Yabana K
Meeting abstracts of the Physical Society of Japan, Mar. 2010
Japanese - 30aXF-8 Linear Response calculations with Skyrme TDHF+BCS II
Ebata S; Nakatsukasa T; Inakura T; Hashimoto Y; Yabana K
Meeting abstracts of the Physical Society of Japan, Mar. 2009
Japanese - 22aSA-7 Linear response calculations using the TDHF+BCS with the Skyrme force
Ebata S; Nakatsukasa T; Inakura T; Hashimoto Y; Yabana K
Meeting abstracts of the Physical Society of Japan, Aug. 2008
Japanese - 26pZH-5 "Calculation of Real-Time Response Function by TDHF+BCS" 2nd
Ebata S; Nakatsukasa T; Inakura T; Hashimoto Y; Yabana K
Meeting abstracts of the Physical Society of Japan, Feb. 2008
Japanese - 21aYE-7 Calculation of Real-Time Response Function by TDHF-BCS
Ebata S; Nakatsukasa T; Inakura T; Hashimoto Y; Yabana K
Meeting abstracts of the Physical Society of Japan, Aug. 2007
Japanese
■ Research projects
- 核分裂片の荷電偏極が繋ぐ微視的理論研究と応用研究
01 Apr. 2020 - 31 Mar. 2023
Grant amount(Total)：4160000, Direct funding：3200000, Indirect funding：960000
Grant number：20K03943 - Studies of nuclear radius in cluster states by method of scattering radius
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), 01 Apr. 2014 - 31 Mar. 2017
Ito Makoto; Kamimura Masayasu; Ebata Syuuichiro; Tomita Masashi; Iwasaki Masataka; Otani Reiji; Kageyama Rito; Kudo Mikihisa; Takenaka Naoto; Mimura Koutaro; Horio Keita; Umehara Hajime; Sonoda Shota; Nakao Makoto, Kansai University
Grant amount(Total)：4550000, Direct funding：3500000, Indirect funding：1050000
In light nuclear systems, it is well known that alpha cluster structures appear in excited states. One of characteristic properties in the alpha cluster structures is a prominent extension of the matter radius. Typical example is the 3 alpha structure in 12C. The matter radii of the 3 alpha state is expected to be prominently enhanced in comparison to the matter radius of the ground state but the direct measurement of the 3alpha radius is completely impossible because of its short life time.
In this study, we have formulated a method of scattering radius, which characterizes a spatial size for final state productions in nuclear reactions. The scattering radius is sensitive to the matter radius of the final state produced by the nuclear reaction. We have applied this method to the alpha + 12C inelastic scattering, which goes to the 3 alpha state in 12C. We have confirmed that the matter radius of the 3 alpha state is enhanced by about 1 fm in comparison to the ground 12C nucleus.
Grant number：26400284 - Low-energy collective excitations in nuclei and mechanism of nuclear fusion/fission
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), 01 Apr. 2013 - 31 Mar. 2017
Nakatsukasa Takashi; MATSUO Masayuki; YABANA Kazuhiro; EBATA Shuichiro
Grant amount(Total)：18850000, Direct funding：14500000, Indirect funding：4350000
Nuclear reactions are fuel of stars and microscopic processes to produce heavy elements in stars and stellar explosions. Nuclear fusion and fission processes are particularly important reaction mechanisms. They are collective motions, involving many nucleons, of quantum nature with strong anharmonicity, which is a challenging subject in theoretical physics. These reactions are also closely related to low-energy collective excitations in nuclei. Thus, they are of great interest as a problem of nuclear structure. Conventional approaches to these problems assume its reaction path and adjusting the potential. In the present research, we remove all these assumptions and start from nucleonic degrees of freedom. We have achieved to derive the collective Hamiltonian for a fully non-empirical description of the nuclear reactions.
Grant number：25287065