Investigation of fission properties and evaporation residue measurement in the reactions using
U target nucleus
U標的を用いた重イオン入射反応における核分裂特性と蒸発残留核の測定
西尾 勝久
; 池添 博; Hofmann, S.*; Ackermann, D.*; Antalic, S.*; 有友 嘉浩; Comas, V. F.*; D
llmann, Ch. E.*; Gorshkov, A.*; Graeger, R.*; 萩野 浩一*; Heinz, S.*; Heredia, J. A.*; 廣瀬 健太郎*; Khuyagbaatar, J.*; Kindler, B.*; Kojouharov, I.*; Lommel, B.*; 牧井 宏之
; Mann, R.*; 光岡 真一; 永目 諭一郎
; 西中 一朗; 大槻 勤*; Popeko, A. G.*; Saro, S.*; Sch
del, M.*; T
rler, A.*; 若林 泰生; 渡辺 裕*; Yakushev, A.*; Yeremin, A. V.*
Nishio, Katsuhisa; Ikezoe, Hiroshi; Hofmann, S.*; Ackermann, D.*; Antalic, S.*; Aritomo, Yoshihiro; Comas, V. F.*; D
llmann, Ch. E.*; Gorshkov, A.*; Graeger, R.*; Hagino, Koichi*; Heinz, S.*; Heredia, J. A.*; Hirose, Kentaro*; Khuyagbaatar, J.*; Kindler, B.*; Kojouharov, I.*; Lommel, B.*; Makii, Hiroyuki; Mann, R.*; Mitsuoka, Shinichi; Nagame, Yuichiro; Nishinaka, Ichiro; Otsuki, Tsutomu*; Popeko, A. G.*; Saro, S.*; Sch
del, M.*; T
rler, A.*; Wakabayashi, Yasuo; Watanabe, Yutaka*; Yakushev, A.*; Yeremin, A. V.*
Fission fragment mass distributions after full momentum transfer of the projectile were measured in the reactions using a
U target nucleus bombarded by
Si,
P,
S,
Ar,
Ca projectiles. We observed a strong variation of the distribution as function of bombarding energy. The results were interpreted by the effects of nuclear deformation of the target nucleus on the competition between fusion and quasifission. The symmetric fission includes fusion-fission, wheres as the asymmetric fission represents quasifission. The fusion probabilities were determined with the help of fluctuation-dissipation model. The estimated evaporation residue cross sections (
Sg and
Hs) produced in
Si +
U and
S+
U reproduced the experimental data.