Investigation of Sub-Coulomb barrier fusion reaction of alpha+Ca-40 in different models

In this study, microscopic nucleon-nucleon Double Folding (DF) and phenomenological potentials have been used to investigate alpha+Ca-40 reaction observables at sub-barrier energies. In the calculations, semi-classicalWentzel-Kramers-Brillouin ( WKB) approach has been used in order to obtain the cross-sections and reaction rates of alpha+Ca-40. Besides WKB approximation, we have also utilized Talys code in order to get the comparative results and find out the method differences. To estimate the reaction rates, energy-dependent cross-sections and astrophysical S-factors of alpha+Ca-40 have been used. Herewith, differences between models and potentials have been demonstrated using the reaction rate estimates.