R. W. Fergerson

Polarized proton inelastic scattering from 40Ca and 48Ca at 500 MeV

Abstract Differential cross sections and analyzing powers for inelastic scattering of 500 MeV polarized protons to several low-lying states in 40 Ca and 48 Ca are presented. Phenomenological optical potentials (including density squared terms) have been determined and the data have been analyzed to obtain mass deformation parameters. It is expected that these data will be useful in further testing the recently developed relativistic impulse approximation formalisms and in studying the need for medium modification of the interaction.

Inclusive (p, p′) cross sections and analyzing powers for 1H and 12C in the delta region☆

Abstract Cross sections and analyzing powers have been measured at 800 MeV for inclusive (p, p′) reactions on 1H and 12C in the 300 MeV excitation region. The data for 1H and 12C are qualitatively similar, but differ in detail. A Born approximation model reproduces the cross sections for p + p scattering, but fails to fit the Ay data. Further, while a plane wave impulse approximation calculation reproduces the general features of the 12C(p, p′) cross sections, significant details are not accounted for.

Inclusive quasielastic spin observables for p+2H, 12C at 500 Me V☆

Abstract Analyzing powers (Ay) and spin-rotation-depolarization parameters (DSS, DSL, DLS, DLL, DNN) were determined for 500 MeV p + 2 H and p + 12 C inclusive quasielastic scattering at 10°, 15°, and 20° laboratory scattering angles. The p + 2 H data are consistent with the isospin-average of the proton-proton and proton-neutron scattering observables; the p + 12 C data are not. A relativistic plane wave impulse approximation calculation leads to better agreement with the p + 12 C spin-observables.