Theoretical modification on semiclassical distorted wave model and its application to the study of spin observables

The semiclassical distorted wave (SCDW) model of nucleon inelastic and charge exchange scattering at intermediate energies is modified to take accurate account of off-the-energy-shell matrix elements of the in-medium [Formula Presented] interaction and explicit account of the exchange of colliding two nucleons, making use of the G matrix parametrized in coordinate representation. The effects of the modification on the double differential inclusive cross sections are discussed for the cases of [Formula Presented] and (p, nx) reactions on [Formula Presented] at 160 MeV. The modification enables the SCDW model to calculate spin observables. The depolarizations in [Formula Presented] at 80 MeV and [Formula Presented] and [Formula Presented] at 160 MeV by one- and two-step processes are calculated, and the result for [Formula Presented] is compared with experimental data. The calculated spin flips in [Formula Presented] and (p, nx) on [Formula Presented] are analyzed in terms of the effects of in-medium modification of the [Formula Presented] interaction and the contributions of individual components of the effective interaction.