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Validation of the multinucleon transfer method for the determination of the fission barrier height

多核子移行反応を用いた核分裂障壁高さの決定と検証

Kean, K. R.; 西尾 勝久; 廣瀬 健太郎; Vermeulen, M. J.; 牧井 宏之; Orlandi, R.; 塚田 和明; Andreyev, A.; Tsekhanovich, I.*; 千葉 敏*

Kean, K. R.; Nishio, Katsuhisa; Hirose, Kentaro; Vermeulen, M. J.; Makii, Hiroyuki; Orlandi, R.; Tsukada, Kazuaki; Andreyev, A.; Tsekhanovich, I.*; Chiba, Satoshi*

The validity of the multinucleon transfer (MNT) approach for deduction of fission barrier heights was investigated in an experiment carried out at the JAEA tandem accelerator facility. By using the $$^{18}$$O+$$^{237}$$Np reaction, fission barrier heights were inferred from fission probabilities of the nuclei $$^{239}$$Np and $$^{239,240}$$Pu produced in the $$2n$$ and $$pn/p2n$$ transfer channels, respectively. The deduced values of fission barriers agree well with the literature data, thus demonstrating the potential of the MNT reactions for obtaining fission-barrier data for nuclei not accessible for fission studies via neutron- or light charged particle-induced reactions.

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