Effect of Diffuseness Parameter on the Fusion Cross-Section of Closed-Shell Nuclei

Abstract

Heavy-ion fusion reactions are important and essential to express the dynamical properties of colliding nuclei, and to address the tunneling effect in quantum mechanics. In the fusion process, the ion-ion potential plays an important role in approaching the measured cross section with the experimental value by influencing the tunneling probability of interacting nuclei. In this work, the fusion cross-sections of closed-shell heavy-ion fusion systems have been calculated and analyzed in the framework of coupled channel theory, using the code CCFULL, by fixing the potential depth value = 102.9 MeV and the fusion radius = 1.096 , while, the diffuseness parameter of Wood--Saxon potential is varied from 0.6 to 1.1 to fitting the fusion cross-section data at energies near and below the Coulomb barrier. It was observed that our approach is able to estimating the experimentally observed cross-sections of closed-shell colliding nuclei.