The effect of the exclusion principle on the real part of the optical potential

Abstract

The real part of the optical potential for nucleon-nucleus scattering was calculated in the frame of the Watson theory. The Pauli principle was taken into account by excluding the intermediate states occupied by target nucleons from the scattering equation. The first correction to the real part of the optical potential, resulting from the Pauli principle, was expressed by the nucleon-nucleon phase shifts. Numerical results were obtained for the SignellMarshak phase shifts. At medium energies the depth of the real part of the optical potential increased appreciably because of the Pauli principle. (auth)