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-ray spectroscopy of the neutron-rich nuclei in the uranium region produced by the heavy-ion transfer reactionIshii, Tetsuro
no journal, ,
no abstracts in English
-ray measurement of the neutron-rich nucleus 
PuMakii, Hiroyuki; Ishii, Tetsuro; Asai, Masato; Tsukada, Kazuaki; Toyoshima, Atsushi; Matsuda, Makoto; Makishima, Akiyasu*; Kaneko, Junichi*; Tome, Hayato; Ichikawa, Shinichi; et al.
no journal, ,
no abstracts in English
Si + 
UNishio, Katsuhisa; Mitsuoka, Shinichi; Ikezoe, Hiroshi; Hofmann, S.*; He
berger, F. P.*; Ackermann, D.*; Antalic, S.*; Comas, V. F.*; Gan, Z.*; Heinz, S.*; et al.
no journal, ,
Seaborgium isotopes were produced in the fusion reaction Si + U as evaporation residues (ERs), and the cross sections were determined. The experiment was carried out at GSI in Darmstadt, Germany. At the center-of-mass energy of E
= 144 MeV, three 
decay chains starting from 
Sg were observed, and the corresponding ER cross section was determined to be 67 pb. At the sub-barrier energy of E= 133 MeV, three spontaneous fission events of a new isotope 
Sg were detected. The cross section was 10 pb. The half-life of Sg was determined to be 120 ms. The ER cross sections were compared with a statistical model calculation. In the fusion process, the coupled channel calculation taking into account the prolate deformation of U was adopted to determine the capture cross section. The calculated capture cross section agrees well with the fission cross section of Si + U obtained at the JAEA tandem accelerator. The measured cross section of Sg at the sub-barrier energy is factor 10
larger than the calculation based on the one-dimensional model in the fusion process, showing the fusion enhancement caused by the deformation of U. However, disagreement with the calculation suggests the presence of quasi-fission channel. At the above barrier energy of E = 144 MeV, the measured cross section is well reproduced by the calculation. This means that the interaction of Si at the equotorial side of U has advantage on the fusion process.
- spectroscopy of 
NoAsai, Masato; Tsukada, Kazuaki; Haba, Hiromitsu*; Toyoshima, Atsushi; Ishii, Tetsuro; Nagame, Yuichiro; Nishinaka, Ichiro; Ichikawa, Takatoshi*; Kojima, Yasuaki*; Sueki, Keisuke*
no journal, ,
rays following the decay of No have been measured by means of - coincidence spectroscopy to establish neutron single-particle states in odd-mass superheavy nuclei. Seven transitions were observed, and excitation energies of the daughter nucleus 
Fm were determined. Spin-parities and neutron single-particle configurations of the excited states in Fm as well as the ground state of No were identified, and energy spacings and order of neutron single-particle states in N=151 isotones were established. It was found that the N=152 deformed neutron shell gap is larger in Fm and No nuclei than in lighter nuclei of Cf, Cm and Pu, which provides important information to clarify the shell structure of superheavy nuclei.
Li(d,t)(d,p)(d,) reaction cross sectionsHashimoto, Takashi; Ishiyama, Hironobu*; Hirayama, Yoshikazu*; Watanabe, Yutaka*; Imai, Nobuaki*; Miyatake, Hiroari; Jeong, S.-C.*; Yoshikawa, Nobuharu*; Tanaka, Masahiko*; Nomura, Toru*; et al.
no journal, ,
no abstracts in English
Hayakawa, Takehito; Shizuma, Toshiyuki; Kajino, Toshitaka*; Ogawa, Kengo*; Nakada, Hitoshi*
no journal, ,
no abstracts in English
Utsuno, Yutaka; Otsuka, Takaharu*; Homma, Michio*; Mizusaki, Takahiro*
no journal, ,
no abstracts in English
Zn+
Pb,
Bi reactionsMitsuoka, Shinichi; Ikezoe, Hiroshi; Nishio, Katsuhisa; Jeong, S.-C.*; Watanabe, Yutaka*
no journal, ,
no abstracts in English
Maruyama, Toshiki; Tatsumi, Toshitaka*; Schulze, H.-J.*; Chiba, Satoshi
no journal, ,
no abstracts in English
Yamada, Satoru; Oku, Takayuki; Mishima, Kenji*; Sato, Hiromi*; Hirota, Katsuya*; Morishima, Takahiro*; Ono, Masashi*; Shinohara, Takenao; Suzuki, Junichi; Shimizu, Hirohiko*
no journal, ,
no abstracts in English
Segawa, Mariko; Nagai, Yasuki*; Masaki, Tomohiro*; Shima, Tatsushi*; Makii, Hiroyuki; Mishima, Kenji*; Ueda, Hitoshi*; Temma, Yasuyuki*; Igashira, Masayuki*; Osaki, Toshiro*; et al.
no journal, ,
no abstracts in English
Oyaizu, Mitsuhiro*; Ishiyama, Hironobu*; Imai, Nobuaki*; Kawakami, Hirokane*; Tanaka, Masahiko*; Jeong, S.-C.*; Hirayama, Yoshikazu*; Fuchi, Yoshihide*; Miyatake, Hiroari; Watanabe, Yutaka*; et al.
no journal, ,
Experimental results on the charge breeding efficiencies for medium-hevy elements, such as indium, barium, Zenon, etc, including radioactive isotopes were reported.