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Shimizu, Noritaka*; Mizusaki, Takahiro*; Utsuno, Yutaka; Tsunoda, Yusuke*
Computer Physics Communications, 244, p.372 - 384, 2019/11
Times Cited Count:120 Percentile:99.79(Computer Science, Interdisciplinary Applications)no abstracts in English
Shimizu, Noritaka*; Utsuno, Yutaka; Futamura, Yasunori*; Sakurai, Tetsuya*; Mizusaki, Takahiro*; Otsuka, Takaharu*
Physics Letters B, 753, p.13 - 17, 2016/02
Times Cited Count:19 Percentile:81.03(Astronomy & Astrophysics)Nuclear level density plays an important role in applications to nuclear energy and nuclear astrophysics, dominating neutron-capture cross sections. In this paper, we propose a new, practical and accurate method of estimating nuclear level density within the framework of the nuclear shell model, and show its feasibility and usefulness. This method is based on the idea that the level density is obtained by the number of eigenstates that is represented as a contour integral in the complex plane. We first confirm the feasibility of this method using a small system in which the exact eigenstates are available, and then calculate parity-dependent level density in Ni, which cannot be calculated with direct eigenstate counting. We succeed in reproducing the experimental result that the
and
level densities are almost identical in low-energy regions, which cannot be obtained with conventional methods of estimating level densities.
Utsuno, Yutaka; Otsuka, Takaharu*; Shimizu, Noritaka*; Tsunoda, Yusuke*; Homma, Michio*; Abe, Takashi*; Mizusaki, Takahiro*; Togashi, Tomoaki*; Brown, B. A.*
Proceedings of International Conference on Nuclear Theory in the Supercomputing Era 2014 (NTSE 2014), p.29 - 34, 2016/00
no abstracts in English
Utsuno, Yutaka; Otsuka, Takaharu*; Tsunoda, Yusuke*; Shimizu, Noritaka*; Homma, Michio*; Togashi, Tomoaki*; Mizusaki, Takahiro*
JPS Conference Proceedings (Internet), 6, p.010007_1 - 010007_8, 2015/06
no abstracts in English
Utsuno, Yutaka; Otsuka, Takaharu*; Shimizu, Noritaka*; Homma, Michio*; Mizusaki, Takahiro*; Tsunoda, Yusuke*; Abe, Takashi*
EPJ Web of Conferences, 66, p.02106_1 - 02106_8, 2014/03
Times Cited Count:14 Percentile:96.68no abstracts in English
Utsuno, Yutaka; Otsuka, Takaharu*; Brown, B. A.*; Homma, Michio*; Mizusaki, Takahiro*; Shimizu, Noritaka*
Physical Review C, 86(5), p.051301_1 - 051301_6, 2012/11
Times Cited Count:132 Percentile:98.5(Physics, Nuclear)no abstracts in English
Utsuno, Yutaka; Otsuka, Takaharu*; Brown, B. A.*; Homma, Michio*; Mizusaki, Takahiro*; Shimizu, Noritaka*
Progress of Theoretical Physics Supplement, (196), p.304 - 309, 2012/10
no abstracts in English
Shimizu, Noritaka*; Utsuno, Yutaka; Mizusaki, Takahiro*; Homma, Michio*; Tsunoda, Yusuke*; Otsuka, Takaharu*
Physical Review C, 85(5), p.054301_1 - 054301_6, 2012/05
Times Cited Count:21 Percentile:74.46(Physics, Nuclear)no abstracts in English
Shimizu, Noritaka*; Abe, Takashi*; Tsunoda, Yusuke*; Utsuno, Yutaka; Yoshida, Toru*; Mizusaki, Takahiro*; Homma, Michio*; Otsuka, Takaharu*
Progress of Theoretical and Experimental Physics (Internet), 2012(1), p.01A205_1 - 01A205_27, 2012/00
Times Cited Count:116 Percentile:96.23(Physics, Multidisciplinary)no abstracts in English
Utsuno, Yutaka; Otsuka, Takaharu*; Brown, B. A.*; Homma, Michio*; Mizusaki, Takahiro*
AIP Conference Proceedings 1355, p.161 - 166, 2011/00
Times Cited Count:0 Percentile:0.05no abstracts in English
Shimizu, Noritaka*; Utsuno, Yutaka; Mizusaki, Takahiro*; Otsuka, Takaharu*; Abe, Takashi*; Homma, Michio*
Physical Review C, 82(6), p.061305_1 - 061305_4, 2010/12
Times Cited Count:44 Percentile:90.47(Physics, Nuclear)no abstracts in English
Utsuno, Yutaka; Otsuka, Takaharu*; Brown, B. A.*; Homma, Michio*; Mizusaki, Takahiro*
AIP Conference Proceedings 1120 (Internet), p.81 - 86, 2009/05
no abstracts in English
Utsuno, Yutaka; Otsuka, Takaharu*; Mizusaki, Takahiro*; Homma, Michio*
European Physical Journal; Special Topics, 150(1), p.187 - 188, 2007/11
Times Cited Count:2 Percentile:19.18(Physics, Multidisciplinary)no abstracts in English
Utsuno, Yutaka; Otsuka, Takaharu*; Mizusaki, Takahiro*; Homma, Michio*
Journal of Physics; Conference Series, 49, p.126 - 131, 2006/00
no abstracts in English
Utsuno, Yutaka; Otsuka, Takaharu*; Mizusaki, Takahiro*; Homma, Michio*
Journal of Physics; Conference Series, 20, p.167 - 168, 2005/00
Times Cited Count:0 Percentile:0.06no abstracts in English
Utsuno, Yutaka; Otsuka, Takaharu*; Glasmacher, T.*; Mizusaki, Takahiro*; Homma, Michio*
Physical Review C, 70(4), p.044307_1 - 044307_8, 2004/10
Times Cited Count:140 Percentile:98.09(Physics, Nuclear)We perform systematic calculations of nuclear moments and energy levels in neutron-rich Na isotopes with the Monte Carlo shell model by adopting a large model space consisting of the full and part of the
orbits. The calculation well reproduces those observables. The result shows that the disappearance of the
magic number starts already at
and that the magicity completely disappears for the
isotone
Na. This is in sharp contrast to previous consensus that the magic number disappears at
and beyond. This early onset of disappearance indicates that the
shell gap considerably narrows in Na isotopes compared to stable nuclei near
Ca.
Osa, Akihiko; Czosnyka, T.*; Utsuno, Yutaka; Mizusaki, Takahiro*; Toh, Yosuke; Oshima, Masumi; Koizumi, Mitsuo; Hatsukawa, Yuichi; Katakura, Junichi; Hayakawa, Takehito; et al.
Physics Letters B, 546(1-2), p.48 - 54, 2002/10
Times Cited Count:10 Percentile:51.3(Astronomy & Astrophysics)A Kr beam was Coulomb-excited on a
Mo target and a
Ta target. Six reduced matrix elements for 5 low-lying states were derived from the analysis using the least-squares code GOSIA. The quadrupole moment of the 2
was newly obtained. The measured quadrupole moment and the
values are consistent with large-scale shell-model calculations which give a systematic description of
,=,50 isotones.
Utsuno, Yutaka; Otsuka, Takaharu*; Mizusaki, Takahiro*; Homma, Michio*
JAERI-Conf 2001-012, p.103 - 106, 2001/09
no abstracts in English
Otsuka, Takaharu*; Homma, Michio*; Mizusaki, Takahiro*; Shimizu, N.*; Utsuno, Yutaka
Progress in Particle and Nuclear Physics, 47(1), p.319 - 400, 2001/09
Times Cited Count:276 Percentile:99.3(Physics, Nuclear)no abstracts in English
Otsuka, Takaharu*; Fujimoto, Rintaro*; Utsuno, Yutaka; Brown, B. A.*; Homma, Michio*; Mizusaki, Takahiro*
Physical Review Letters, 87(8), p.082502_1 - 082502_4, 2001/08
Times Cited Count:622 Percentile:99.43(Physics, Multidisciplinary)no abstracts in English