Stability of heated nuclei against mass-asymmetric deformations in the fission process
The fission-fragment mass distributions for3He-induced reactions on162Dy,169Tm,176Hf,181Ta, and180W were measured at a bombarding energy of 60–65 MeV. The parameters of stability of the saddle-point configurations with respect to the mass-asymmetric deformationsQ have been estimated from the data on the distribution variances and compared with the LDM predictions. Quantitative analysis of the fission barriers andQ(X)-dependence has shown inconsistencies in the modern description of the mass and energy macroscopic component.