Nuclear level density in Hauser-Feshbach calculations for the p-process

Abstract

In this work we have determined the cross sections of the reactions 102Pd(p,γ)103Ag,105Pd(p,γ)106Ag in the framework of Hauser-Feshbach statistical model using the TALYS [1] code. The sensitivity of these calculations to various nuclear level density (NLD) models (both phenomenological and microscopic) was studied using the global nucleon optical model potential of Koning and Delaroche (2003). It has been found that very good agreement with the experimental data is obtained using the NLD model of [2], In case of 102Pd(p,γ)103Ag the other NLD models are in agreement with the experimental data at low energies but large discrepancies are observed at high energies. However for 105Pd(p,γ)106Ag reaction there is a large discrepancy between the experimental and theoretical results except when NLD model of [2] was used for calculation. Hence these theoretically derived cross sections could be used to calculate reaction rates in reaction networks for the inverse (γ,p) reaction using the principle of detailed balance.