TY - JOUR
T1 - Superheavy research at RIKEN
AU - Morita, Kosuke
N1 - Funding Information:
Recent experiments (2004 - 2008) at RIKEN have performed in collaboration with the following members. K. Morimoto, D. Kaji, H. Haba, K. Katori, T. Ohnishi, T. Suda, A. Yoneda, A. Yoshida, H. Kikunaga (RIKEN), T. Akiyama (RIKEN & Saitama Univ.), S. Goto, H. Kudo (Niigata Univ.), E. Ideguchi (CNS Univ. of Tokyo), H. Koura (JAEA), A. Ozawa, K. Sueki (Univ. of Tsukuba), F. Tokanai (Yamagata Univ.), T. Yamaguchi (Saitama Univ.) and N. Sato (RIKEN & Tohoku Univ.). This research was partly supported by a Grant-in-Aid for Specially Promoted Research, 19002005, 2007, from the Ministry of Education, Science, Sports and Culture, Japan.
PY - 2009/11
Y1 - 2009/11
N2 - At RIKEN (The Institute of Physical and Chemical Research) in Japan, we have performed experiments to study the productions and decays of the heaviest elements produced by one neutron emission channels of 208Pb and 209Bi based heavy-ion induced fusion reactions. A gas-filled type recoil separator has been used for collecting evaporation residues of the reactions separating them from high intensity beam particles. The reactions studied were 208Pb(58Fe, n)265Hs, 208Pb(64Ni, n) 271Ds, 209Bi( 64Ni, n) 272Rg, 208Pb(70Zn, n) 277112, and 209Bi(70Zn, n) 278113. In studies of the first four reactions we have provided the independent confirmations of the productions and their decays of the isotopes, 265Hs, 271Ds, 272Rg, and 277112, as well as the decay properties of their decay daughters, previously studied by Hofmann et al., a group of Gesellschaft für Schwerionenforschung (GSI), Germany. In the last reaction, we observed two decay chains originated from the isotope 278113, assigned firstly by generic correlation of the α decay chains connected into the previously known decay of 266Bh and 262Db via previously unknown α decays of 278113, 274Rg and 270Mt.
AB - At RIKEN (The Institute of Physical and Chemical Research) in Japan, we have performed experiments to study the productions and decays of the heaviest elements produced by one neutron emission channels of 208Pb and 209Bi based heavy-ion induced fusion reactions. A gas-filled type recoil separator has been used for collecting evaporation residues of the reactions separating them from high intensity beam particles. The reactions studied were 208Pb(58Fe, n)265Hs, 208Pb(64Ni, n) 271Ds, 209Bi( 64Ni, n) 272Rg, 208Pb(70Zn, n) 277112, and 209Bi(70Zn, n) 278113. In studies of the first four reactions we have provided the independent confirmations of the productions and their decays of the isotopes, 265Hs, 271Ds, 272Rg, and 277112, as well as the decay properties of their decay daughters, previously studied by Hofmann et al., a group of Gesellschaft für Schwerionenforschung (GSI), Germany. In the last reaction, we observed two decay chains originated from the isotope 278113, assigned firstly by generic correlation of the α decay chains connected into the previously known decay of 266Bh and 262Db via previously unknown α decays of 278113, 274Rg and 270Mt.
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U2 - 10.1142/S0218301309014500
DO - 10.1142/S0218301309014500
M3 - Article
AN - SCOPUS:73149109963
VL - 18
SP - 2175
EP - 2178
JO - International Journal of Modern Physics E
JF - International Journal of Modern Physics E
SN - 0218-3013
IS - 10
ER -