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Systematic study of fission fragment mass distribution by a semi-empirical model

Ota, Masahisa*; Tatsuda, Sayuki*; Wada, Takahiro*; Chiba, Satoshi; Koura, Hiroyuki  ; Maruyama, Toshiki ; Kajino, Toshitaka*; Otsuki, Kaori*

We propose a systematical method to calculate the fission fragment mass distribution (FFMD) for nuclear energy and astrophysical applications. The potential energy surface (PES) of fissionable nuclei is calculated by two-center shell model taking the mass-asymmetry, fragment deformation and distance of the fragments as parameters. Then, the ratio of symmetric and asymmetric fission modes is determined in a semi-empirical way. The present model can predict FFMD for a broad range of fissionable nuclei; Z=88 to 120. We compare the present results with measured data and systematics proposed by Katakura et al.

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