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Saptiama, I.*; Kaneti, Y. V.*; Oveisi, H.*; Suzuki, Yoshitaka; Tsuchiya, Kunihiko; Takai, Kimiko*; Sakae, Takeji*; Pradhan, S.*; Hossain, M. S. A.*; Fukumitsu, Nobuyoshi*; et al.
Bulletin of the Chemical Society of Japan, 91(2), p.195 - 200, 2018/02
Times Cited Count:44 Percentile:81.62(Chemistry, Multidisciplinary)no abstracts in English
Saptiama, I.*; Kaneti, Y. V.*; Suzuki, Yumi*; Suzuki, Yoshitaka; Tsuchiya, Kunihiko; Sakae, Takeji*; Takai, Kimiko*; Fukumitsu, Nobuyoshi*; Alothman, Z. A.*; Hossain, M. S. A.*; et al.
Bulletin of the Chemical Society of Japan, 90(10), p.1174 - 1179, 2017/10
Times Cited Count:44 Percentile:79.34(Chemistry, Multidisciplinary)no abstracts in English
Ishii, Tetsuro; Makii, Hiroyuki*; Asai, Masato; Tsukada, Kazuaki; Toyoshima, Atsushi; Matsuda, Makoto; Makishima, Akiyasu*; Shigematsu, Soichiro*; Kaneko, Junichi*; Shizuma, Toshiyuki; et al.
Physical Review C, 78(5), p.054309_1 - 054309_11, 2008/11
Times Cited Count:14 Percentile:64.80(Physics, Nuclear)Ishii, Tetsuro; Makii, Hiroyuki; Asai, Masato; Koura, Hiroyuki; Shigematsu, Soichiro*; Tsukada, Kazuaki; Toyoshima, Atsushi; Matsuda, Makoto; Makishima, Akiyasu*; Shizuma, Toshiyuki; et al.
Nuclear Physics A, 805(1-4), p.257 - 259, 2008/06
no abstracts in English
Ishii, Tetsuro; Shigematsu, Soichiro*; Makii, Hiroyuki; Asai, Masato; Tsukada, Kazuaki; Toyoshima, Atsushi; Matsuda, Makoto; Makishima, Akiyasu*; Shizuma, Toshiyuki; Kaneko, Junichi*; et al.
Physics of Atomic Nuclei, 70(8), p.1457 - 1461, 2007/08
Times Cited Count:9 Percentile:56.22(Physics, Nuclear)We have measured deexcitation rays in the neutron-rich nuclei of U, Pu and Cm. These nuclei were produced by the (O, O) two-neutron transfer reactions with a 200, 162 and 162 MeV O beams and a U, Pu and Cm targets, respectively, using the tandem accelerator at Tokai, Japan. The rays in residual nuclei were measured by taking coincidence with scattering particles using Si - detectors. We have identified rays in U, Pu and Cm by selecting the kinetic energies of O particles which correspond to the excitation energies in these nuclei below their neutron separation energies. The ground-state bands of U, Pu and Cm were established up to 12 states and the octupole band of U was established up to 9 state. Because the deformations of these nuclei are well developed, the moments of inertia reflect the pairing gap, which is expected to be smaller, resulting in a larger moment of inertia, at the deformed shell closure. We have found that the moment of inertia of the ground-state band of Cm is considerably larger than that of Cm. This fact supports the existence of the deformed subshell closure at in Cm isotopes. On the other hand, the moment of inertia of Pu was found to be smaller than that of Pu, which suggests that the deformed subshell closure at weakens or disappears in Pu isotopes. These results are consistent with the prediction by a cranking model calculation.
Ishii, Tetsuro; Makii, Hiroyuki; Asai, Masato; Koura, Hiroyuki; Shigematsu, Soichiro*; Tsukada, Kazuaki; Toyoshima, Atsushi; Matsuda, Makoto; Makishima, Akiyasu*; Kaneko, Junichi*; et al.
Physical Review C, 76(1), p.011303_1 - 011303_5, 2007/07
Times Cited Count:14 Percentile:67.70(Physics, Nuclear)The ground-state bands of the neutron-rich Th and U nuclei were established up to spin 10 and 8, respectively, by in-beam -ray spectroscopy using the (O, Ne) two-proton pickup reaction with a U and a Pu target. Deexcitation rays in Th and U were identified by selecting the kinetic energies of Ne using Si - detectors. The excitation energies of the first 2 states in U and Pu isotopes have local minima at , suggesting the possibility that nuclei with have a spherical shell closure of . Calculation using the Koura-Yamada single-particle potential gives an energy gap of 1.8 MeV at for U.
Ishii, Tetsuro; Shigematsu, Soichiro; Makii, Hiroyuki; Asai, Masato; Tsukada, Kazuaki; Toyoshima, Atsushi; Matsuda, Makoto; Makishima, Akiyasu*; Shizuma, Toshiyuki; Kaneko, Junichi*; et al.
Journal of the Physical Society of Japan, 75(4), p.043201_1 - 043201_4, 2006/04
Times Cited Count:19 Percentile:68.29(Physics, Multidisciplinary)The ground-state band of the neutron-rich transuranium nucleus Cm was established up to spin 12 by in-beam -ray spectroscopy using the two-neutron-transfer reaction with a Cm target and a 162 MeV O beam. Deexcitation rays in Cm were identified by selecting the kinetic energies of O particles with Si - detectors. The moment of inertia of Cm is considerably smaller than that of Cm, which supports the existence of the deformed subshell closure at in Cm isotopes.
Ishii, Tetsuro; Shigematsu, Soichiro; Asai, Masato; Makishima, Akiyasu*; Matsuda, Makoto; Kaneko, Junichi*; Hossain, I.*; Ichikawa, Shinichi; Kono, Toshiyuki*; Ogawa, Masao*
Physical Review C, 72(2), p.021301_1 - 021301_5, 2005/08
Times Cited Count:20 Percentile:76.26(Physics, Nuclear)In the two-neutron-transfer reaction of a 200-MeV O beam with a U target, deexcitation rays in a neutron-rich nucleus of U were measured. The rays in U were identified by taking coincidence with O, using Si - detectors. The kinetic energies of O particles allowed us to select the excitation energies of U below the neutron separation energy. The ground-state band and the octupole band of U were established up to 12 and 9, respectively. The octupole-band head of U is higher than those of U by about a hundred keV, suggesting that a secondary maximum of octupole correlations exists at in U isotopes.
Ishii, Tetsuro; Asai, Masato; Makishima, Akiyasu*; Hossain, I.*; Kleinheinz, P.*; Ogawa, Masao*; Matsuda, Makoto; Ichikawa, Shinichi
European Physical Journal A, 13(1-2), p.15 - 19, 2002/01
no abstracts in English
Ishii, Tetsuro; Asai, Masato; Matsuda, Makoto; Ichikawa, Shinichi; Makishima, Akiyasu*; Hossain, I.*; Kleinheinz, P.*; Ogawa, Masao*
Acta Physica Polonica B, 32(3), p.739 - 746, 2001/03
no abstracts in English
Asai, Masato; Ishii, Tetsuro; Makishima, Akiyasu*; Hossain, I.*; Ogawa, Masao*; Ichikawa, Shinichi
Physical Review C, 62(5), p.054313_1 - 054313_7, 2000/11
Times Cited Count:19 Percentile:69.09(Physics, Nuclear)no abstracts in English
Ishii, Tetsuro; Asai, Masato*; Makishima, A.*; Hossain, I.*; Ogawa, Masao*; Hasegawa, Jun*; Matsuda, Makoto; Ichikawa, Shinichi
Physical Review Letters, 84(1), p.39 - 42, 2000/01
Times Cited Count:66 Percentile:87.90(Physics, Multidisciplinary)no abstracts in English
Ishii, Tetsuro; Asai, Masato*; Makishima, Akiyasu*; Hossain, I.*; Ogawa, Masao*; Hasegawa, Jun*; Matsuda, Makoto*; Ichikawa, Shinichi
AIP Conference Proceedings 495, p.67 - 70, 1999/12
no abstracts in English
Ishii, Tetsuro; Asai, Masato*; Hossain, I.*; P.Kleinheinz*; Ogawa, Masao*; Makishima, Akiyasu*; Ichikawa, Shinichi; ; ; J.Blomqvist*
Physical Review Letters, 81(19), p.4100 - 4103, 1998/11
Times Cited Count:43 Percentile:83.06(Physics, Multidisciplinary)no abstracts in English
Ishii, Tetsuro; ; ; Makishima, Akiyasu*; Hossain, I.*; Hayakawa, Takehito*; Kono, Toshiyuki*; Ogawa, Masao*
Nuclear Instruments and Methods in Physics Research A, 395(2), p.210 - 216, 1997/00
Times Cited Count:41 Percentile:92.53(Instruments & Instrumentation)no abstracts in English
Ishii, Tetsuro; Makii, Hiroyuki; Asai, Masato; Tsukada, Kazuaki; Toyoshima, Atsushi; Matsuda, Makoto; Shizuma, Toshiyuki; Makishima, Akiyasu*; Tome, Hayato*; Shigematsu, Soichiro*; et al.
no journal, ,
no abstracts in English
Ishii, Tetsuro; Makii, Hiroyuki; Asai, Masato; Koura, Hiroyuki; Shigematsu, Soichiro*; Tsukada, Kazuaki; Toyoshima, Atsushi; Matsuda, Makoto; Makishima, Akiyasu*; Shizuma, Toshiyuki; et al.
no journal, ,
The ground-state bands of Th,U, Pu and Cm were established by measuring deexcitation rays. These nuclei were produced by the (O, O) and (O, Ne) two-nucleon transfer reactions with U, Pu and Cm targets. The rays in residual nuclei were identified by taking coincidence with scattering particles using high-resolution Si - detectors. By extending the systematics of the 2 energies into neutron-rich nuclei, we have found that the deformed shell gap disappears at Pu isotopes and that U and Pu isotopes have the possibility of the spherical shell closure at .
Ishii, Tetsuro; Makii, Hiroyuki; Asai, Masato; Shigematsu, Soichiro*; Tsukada, Kazuaki; Toyoshima, Atsushi; Matsuda, Makoto; Makishima, Akiyasu*; Kaneko, Junichi*; Tome, Hayato; et al.
no journal, ,
no abstracts in English
Ishii, Tetsuro; Shigematsu, Soichiro; Makii, Hiroyuki; Asai, Masato; Tsukada, Kazuaki; Toyoshima, Atsushi; Matsuda, Makoto; Makishima, Akiyasu*; Shizuma, Toshiyuki; Kaneko, Junichi*; et al.
no journal, ,
no abstracts in English