Fission fragment mass yield deduced from density distribution in the pre-scission configuration

Abstract

Static self-consistent methods usually allow one to determine the most probable fission fragments mass asymmetry. We have applied random neck rupture mechanism to the nuclei in the configuration at the end of fission paths. Fission fragment mass distributions have been deduced from the pre-scission nuclear density distribution obtained from the self-consistent calculations. Potential energy surfaces as well as nuclear shapes have been calculated in the fully microscopic theory, namely the constrained Hartree–Fock–Bogoliubov model with the effective Gogny D1S density-dependent interaction. The method has been applied for analysis of fission of Fm, 252Cf and 180Hg and compared with the experimental data.