Proton elastic and inelastic scattering at 0.8 GeV from C12,13 and Pb208

Angular distributions for the elastic and inelastic scattering of 0.8 GeV protons from C12, C13, and Pb208 have been measured. Reported are data for the ground, 4.4 MeV 2+, 7.6 MeV 0+, 9.6 MeV 3-, and 14.1 MeV 4+ states of C12; the ground, 3.1 MeV 12+, 3.7 MeV 32-, 6.9 MeV 52+, 7.6 MeV 52-, and 11.9 MeV (?) states of C13; and the ground, 2.6 MeV 3-, and 3.2 MeV 5- states of Pb208. Analyses of the elastic angular distributions are made using the partial wave formalism and the Kerman-McManus-Thaler approach to the nucleon-nucleus optical potential; a realistic spin-orbit term is included. The inelastic transitions are analyzed within the framework of the distorted-wave Born-approximation, using transition strengths consistent with previous low-energy studies of inelastic scattering. A simple single-particle-plus-excited-core model is used for C13. In terms of this analysis, an assignment of Jπ=(52, 72)+ is made for the 11.9 MeV state in C13. NUCLEAR REACTIONS C12,13, Pb208(p, p′), E=0.8 GeV; measured σ(θ); enriched targets; resolution ≥ 80 keV, θc.m.=2-40°, Δθ=0.2°. Optical potential analysis, DWBA, inelastic deformation lengths, βlR.