[2N11-16] Nuclear Reaction Theory

[2N15] Semi-empirical fission yield model for the R-process nucleosynthesis

*Chikako Ishizuka¹, Kohsuke Tsubakihara², Taiki Kouno¹, Satoshi Chiba¹, Shinya Wanajo³ (1. Tokyo Tech, 2. NIT Asahikawa College, 3. AEI)

Keywords:nuclear fission, super heavy element, nucleosynthesis

The fission recycling process is expected to play an essential role in the r-process nucleosynthesis, the origin of gold and uranium. Superheavy nuclei produced via the r-process will be the seed nuclei of the r-process. That is called the fission recycling process. However, its contribution to the r-process depends on the nuclear model to provide the fission yields. We construct a semi-empirical model using the charge distribution formula adopted in the JENDL-5 and a four-dimensional Langevin model consistent with experimental data. We present our semi-empirical fission yield model and its influence on the r-process simulations.