Large angle scattering of 0.8 GeV protons fromC12

Abstract

Experimental elastic and inelastic angular distributions for 0.8 GeV $p+^{12}\mathrm{C}$ are reported for momentum transfers up to $q=7.1$ ${\mathrm{fm}}^{\ensuremath{-}1}$. At the largest angle the elastic cross section is \ensuremath{\sim}2.0\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}8}$ mb/sr. The data are analyzed using the distorted-wave Born approximation and the coupled-channels formalism, where phenomenologically deformed optical potentials are used in the latter analysis. The multipole moments extracted from the optical potentials are found to be in fair agreement with those of the charge densities as obtained from electron scattering.NUCLEAR REACTIONS $^{12}\mathrm{C}(p,{p}^{\ensuremath{'}})$, $E=0.8$ GeV; measured $\ensuremath{\sigma}(\ensuremath{\theta})$; natural targets; resolution 100 to 650 keV, ${\ensuremath{\theta}}_{\mathrm{c}.\mathrm{m}.}=3.9\ifmmode^\circ\else\textdegree\fi{}\ensuremath{-}67.2\ifmmode^\circ\else\textdegree\fi{}$, ${q}_{max}=7.1$ ${\mathrm{fm}}^{\ensuremath{-}1}$. Optical model potential, DWBA and coupled channels analyses, rotational model, coupling parameters, multipole moments, inelastic deformation lengths ${\ensuremath{\beta}}_{l}R$.