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タイトル: | Fission fragments mass distributions of nuclei populated by the multinucleon transfer channels of the 18O+232Th reaction |
著者: | Léguillon, R. Nishio, K. Hirose, K. Makii, H. Nishinaka, I. Orlandi, R. Tsukada, K. Smallcombe, J. Chiba, S. Aritomo, Y. Ohtsuki, T. Tatsuzawa, R. Takaki, N. Tamura, N. Goto, S. Tsekhanovich, I. Petrache, C.M. Andreyev, A.N. |
著者名の別形: | 大槻, 勤 |
キーワード: | Fission Multinucleon transfer reaction Fission fragment mass distribution [231–234]Th [232–236]Pa [234–238]U |
発行日: | 10-Oct-2016 |
出版者: | Elsevier BV |
誌名: | Physics Letters B |
巻: | 761 |
開始ページ: | 125 |
終了ページ: | 130 |
抄録: | It is shown that the multinucleon transfer reactions is a powerful tool to study fission of exotic neutron-rich actinide nuclei, which cannot be accessed by particle-capture or heavy-ion fusion reactions. In this work, multinucleon transfer channels of the [18]O + [232]Th reaction are used to study fission of fourteen nuclei [231, 232, 233, 234]Th, [232, 233, 234, 235, 236]Pa, and [234, 235, 236, 237, 238]U. Identification of fissioning nuclei and of their excitation energy is performed on an event-by-event basis, through the measurement of outgoing ejectile particle in coincidence with fission fragments. Fission fragment mass distributions are measured for each transfer channel, in selected bins of excitation energy. In particular, the mass distributions of [231, 234]Th and [234, 235, 236]Pa are measured for the first time. Predominantly asymmetric fission is observed at low excitation energies for all studied cases, with a gradual increase of the symmetric mode towards higher excitation energy. The experimental distributions are found to be in general agreement with predictions of the fluctuation–dissipation model. |
著作権等: | © 2016 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3. |
URI: | http://hdl.handle.net/2433/226449 |
DOI(出版社版): | 10.1016/j.physletb.2016.08.010 |
出現コレクション: | 学術雑誌掲載論文等 |
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