Aims of this work are: (i) Investigation of the production of some radioisotopes that could be used in nuclear battery technology with neutron-induced reaction processes, (ii) Estimation of the cross-section curves of (n, gamma) reactions for astrophysical processes in the energy region between 1 eV and 1 MeV, (iii) Determination of suitable level density models for the (n, gamma) reaction processes. Additionally, the obtained results were compared with the experimental data and recommended data. Based on the calculated results, to eliminate lack of nuclear data in the literature, we recommend new experiments for some reaction processes to be performed by the experimenters. Moreover, for the (n, gamma) reaction processes, suitable level density models were proposed.