Fission study using multi-nucleon transfer reactions

多核子移行反応を用いた核分裂研究

西尾 勝久   ; 廣瀬 健太郎  ; Lguillon, R.; 牧井 宏之   ; Orlandi, R.  ; 西中 一朗; Smallcombe, J. ; 千葉 敏*; 荒木 祥平*; 渡辺 幸信*; 立澤 遼太郎*; 高木 直行*; Andreyev, A. N.*

Nishio, Katsuhisa; Hirose, Kentaro; Lguillon, R.; Makii, Hiroyuki; Orlandi, R.; Nishinaka, Ichiro; Smallcombe, J.; Chiba, Satoshi*; Araki, Shohei*; Watanabe, Yukinobu*; Tatsuzawa, Ryotaro*; Takaki, Naoyuki*; Andreyev, A. N.*

A recent development for fission study using multi-nucleon transfer reactions at the JAEA tandem facility will be presented. Using multi-nucleon transfer reactions, a wide variety of nuclei including neutron-rich nuclei around a target nucleus is produced. By identifying a transfer channels, fission data of several compound nuclei can be studied in one experiment. Another feature of transfer reaction is that excitation energy of a compound nucleus can be populated continuously from the ground state up to several tens MeV, allowing us to study the excitation energy dependence of fission properties. The experiments were carried out in the reactions of O + U,Th,Cm. Results for fission fragment mass distributions and their excitation energy dependence are compared with a calculation based on a fluctuation dissipation model. Also, experimental data of prompt neutron multiplicity in fission and angular distribution of fission fragments will be discussed.