Non - localities in nucleon - nucleus potentials and their effects in nucleon - nucleus scattering

Two causes of non-locality inherent in nucleon-nucleus scattering are considered. They are the results of two-nucleon antisymmetry of the projectile with each nucleon in the nucleus and the dynamic polarization potential representation of channel coupling. For energies ∼ 40− 300 MeV, a g-folding model of the optical potential is used to show the influence of the knock-out process that is a result of the two-nucleon antisymmetry. To explore the dynamic polarization potential caused by channel coupling, a multichannel algebraic scattering model has been used for low-energy scattering. PACS. 24.10.-i Nuclear reactions models and methods – 24.10.Eq Coupled channel and distorted wave methods – 24.10.Ht Optical and diffraction models