1. Study of fission using multi-nucleon transfer reactions.
- Author
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Shouya Tanaka, Yoshihiro Aritomo, Satoshi Chiba, Yuichiro Nagame, Sato, Tetsuya K., Atsushi Toyoshima, Masato Asai, Riccardo Orlandi, Hiroyuki Makii, Vermeulen, Mark, Kentaro Hirose, Kazuaki Tsukada, Katsuhisa Nishio, Tsutomu Ohtsuki, Igor Tsekhanovich, Petrache, Costel M., and Andreyev, Andrei
- Subjects
NUCLEON-nucleon scattering ,NUCLEAR fission ,NUCLIDES ,ENERGY dissipation ,EXCITATION energy (In situ microanalysis) - Abstract
Multi-nucleon transfer channels of the reactions of
18 O+232 Th,18 O+238 U, 18O+248Cm were used to measure fission-fragment mass distribution for various nuclides and their excitation energy dependence. 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 was shown that a reliable understanding of the observed fission fragment mass distributions can be obtained only invoking multi-chance fissions. [ABSTRACT FROM AUTHOR]- Published
- 2018
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