Koyuncu F.Soylu A.2019-08-012019-08-0120170218-3013https://dx.doi.org/10.1142/S0218301317500860https://hdl.handle.net/11480/1765In this study, microscopic nucleon-nucleon Double Folding (DF) and phenomenological potentials have been used to investigate ? +40Ca reaction observables at sub-barrier energies. In the calculations, semi-classical Wentzel-Kramers-Brillouin (WKB) approach has been used in order to obtain the cross-sections and reaction rates of ? +40Ca. 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 ?+40Ca have been used. Herewith, differences between models and potentials have been demonstrated using the reaction rate estimates. © 2017 World Scientific Publishing Company.eninfo:eu-repo/semantics/closedAccessAstrophysical S-factorreaction rateWKB methodArticle261210.1142/S02183013175008602-s2.0-85039167111Q3WOS:000419375100007Q3