Fission modes of neutron-rich nuclei in the r-process nucleosynthesis

摘要

The fission fragments mass distribution (FFMD) which is the important nuclear information in the study of the r-process nucleosynthesis is estimated for the neutron-rich nuclei (Z>85) according to the theoretical investigation of Ihe potential energy surface. The details for determining FFMD are discussed In this paper, the network calculation on the r-process nucleosynthesis is also performed including the data of FFMD The comparison of the results of the network calculation, with and without Ihe fission processes, is shown.