Cross sections and analyzing powers for quasielastic scattering at 795 and 495 MeV using the (p→,n) reaction

Abstract

Double differential cross sections and analyzing powers over the quasielastic region have been measured using the (p\ensuremath{\rightarrow},n) reaction on $^{12}\mathrm{C}$ and $^{\mathrm{nat}}\mathrm{Pb}$. The data were obtained at proton energies of 495 and 795 MeV and cover momentum transfers from 1.0--2.1 ${\mathrm{fm}}^{\mathrm{\ensuremath{-}}1}$ at 495 MeV data and from 0.0--3.5 ${\mathrm{fm}}^{\mathrm{\ensuremath{-}}1}$ at 795 MeV. The cross section data are compared to results from a nonrelativistic reaction model that includes contributions from two-step scattering. The analyzing power measurements are compared to a recent relativistic plane-waves model.