Closure approximation to the absorptive potential in heavy ion scattering

We propose a simple model which is based on the Feshbach's theory of the optical potential. The use of closure relation in both nuclei implies that we implicitly include all possible channels, in particular inelastic scattering and one-nucleon transfer processes. The local absorptive potential is calculated at large distances and its energy dependence is studied. The results are compared with other theoretical works and with phenomenological potentials.