Proton inelastic scattering at intermediate energies and Dirac-equation-based optical potentials

Abstract

The Dirac-equation-based (DEB) optical potential is extended to the study of inelastic excitation of collective states using intermediate-energy protons. Comparison is made with standard calculations using Woods-Saxon potentials. In the energy range 150–800 MeV, the two models give cross sections in close agreement when equal deformation lengths are used. The inelastic polarizations and analyzing powers also agree (to a lesser degree) near or below 200 MeV and at 800 MeV, but show differences at 300 and 500 MeV. We also point out the importance of the deformed spin-orbit terms in inelastic cross section calculations.