SCATTERING OF POLARIZED PROTONS FROM LI-7 AT 200 MEV

New cross-section and analyzing-power data are presented for elastic and inelastic scattering of 200-MeV protons from Li-7, which has a 3/2-, T = 1/2 ground state. A microscopic folding-model optical potential, obtained by convoluting a Pauli-corrected effective nucleon-nucleon (NN) interaction with Li-7 ground-state densities constrained by weak and electromagnetic data, produces a satisfactory description of the elastic data. The effects of the nonspherical terms in the optical potential, estimated via the distorted-wave approximation (DWA), are appreciable. The inelastic transitions leading to the 1/2-, T = 1/2 and 7/2-, T = 1/2 states at 0.48 and 4.63 MeV, respectively, are also examined within the framework of the microscopic folding model and the DWA. Transition potentials are generated by convoluting the effective NN interaction considered with target transition densities constrained by weak, electromagnetic, and low-energy proton and neutron scattering data. These potentials are employed in DWA calculations along with the folded optical potential that is consistent with the transition potentials. These self-consistent calculations also provide a good description of the inelastic data. The results provide a clear indication that there are important shape differences between the Li-6 and Li-7 radial densities and that the two inelastic transitions in Li-7, which are primarily quadrupole in character, have rho-2n(m)/rho-2p(m) almost-equal-to 0.9 and 0.9-1.2, respectively.