Semiclassical treatment of the nucleon-nucleus optical potential

This investigation deals with a semiclassical expansion of the microscopic nucleon-nucleus optical potential utilizing the Green's function approach. By expanding the relevant system of equations for the single-particle propagator, the nucleon self-energy, and the effective interaction in the mixed position-momentum representation, a quasi-h expansion is obtainable which is treated, in more detail, theoretically and numerically up to the second order. The resulting corrections to the standard local-density folding approach change the optical potential in the surface region and are important, it seems, in the energy region below 100 MeV