Comparison of rotating finite range model and Thomas-Fermi fission barriers in the A~190 mass region

Abstract

Statistical model calculations have been performed using the rotating finite range and the Thomas-Fermi models for fission barriers. The results have been compared with the existing cross sections for ⁴⁰Ar+¹⁴⁸Sm and ⁸⁶Kr+¹⁰⁴Ru systems. Analyses show that the use of Thomas-Fermi fission barrier without any shell correction gives the best fit to the experimental cross sections. This observation is in contrast to the conclusion drawn from γ-ray fold measurements for ⁴⁸Ca+¹⁴²Nd and ⁸⁰Se+¹¹⁰Pd systems reported earlier.