Study of fission using multi-nucleon transfer reactions

Katsuhisa Nishio, Kentaro Hirose, Vermeulen Mark, Hiroyuki Makii, Riccardo Orlandi, Kazuaki Tsukada, Masato Asai, Atsushi Toyoshima, Tetsuya K. Sato, Yuichiro Nagame, Satoshi Chiba, Yoshihiro Aritomo, Shouya Tanaka, Tsutomu Ohtsuki, Igor Tsekhanovich, Costel M. Petrache, Andrei Andreyev

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

It is shown that multi-nucleon transfer reaction is a powerful tool to study fission of exotic neutronrich actinide nuclei, which cannot be accessed by particle-capture or heavy-ion fusion reactions. In this work, multi-nucleon transfer channels of the reactions of 18O+232Th, 18O+238U, 18O+248Cm, and 18O+237Np were used to measure fission-fragment mass distribution for each transfer channel. Predominantly asymmetric fission is observed at low excitation energies for all the studied cases, with an increase of the symmetric fission towards high excitation energies. Experimental data are compared with predictions of the fluctuation-dissipation model, where effects of multi-chance fission (neutron evaporation prior to fission) was introduced. It is shown that mass-asymmetric structure remaining at high excitation energies originates from low-excited and less neutronrich excited nuclei due to higher-order chance fissions.

Original languageEnglish
Article number00041
JournalEPJ Web of Conferences
Volume163
DOIs
Publication statusPublished - Nov 22 2017
Externally publishedYes
EventFUSION 2017 - Hobart, Australia
Duration: Feb 20 2017Feb 24 2017

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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