Multi-parameter global calculations of fission fragments using a simplified two-dimensional scission-point model *

Abstract

Exploiting the concept of the dinuclear system, the interaction potential energy of two fragments that are quite close to each other is analyzed. A semi-classical method is used to calculate fission fragment yields using a simplified two-dimensional scission-point model. By considering the tip-to-tip orientation at the scission point of the fission process, we investigate the mass, charge, and kinetic-energy distributions of the fission fragments, for excitation energies in the 0-20 MeV range. Our results show that the fission fragment distributions are reproduced quite well, including the recent experimental results for the isotone chain [D Ramos et al. Phys. Rev. C 97, 054612 (2018)]. Thus, the simplified model is useful for multi-parameter global measurements of fission products.

Deformation parameter changes in fission mass yields within the systematic statistical scission-point model

“…Wei [53] has recently calculated mass distribution using a simplified scission-point model. In these calculations, the deformation values of the fission fragments are equal to the ground state deformation values (such as [47]).…”