Inelastic scattering of polarized protons at 30.3 MeV by 54, 56Fe, 58Ni, 120Sn and 208Pb

Abstract

Experimental differential cross sections and asymmetries were measured for proton inelastic scattering at 30.3 MeV from strongly excited 2 + states in 54, 56Fe, 58Ni and 120Sn and 3 − states in 58Ni, 120Sn and 208Pb. A coupled-channels analysis was performed using both the collective and shell-model descriptions of the nuclei. A good fit was obtained to all the data with the vibrational model when the whole optical potential was deformed; the deformation parameters deduced here are in agreement with those reported elsewhere. A microscopic description of the interaction using effective nucleon-nucleon forces was less successful and some aspects of the problem are discussed.