Continuum protons from the inclusive reaction197Au(p,p?) at incident energies between 100 and 200 MeV

Abstract

Continuum spectra from the reaction 197Au(p, p') at incident energies of 100, 120, 150, 175 and 200 MeV have been measured at scattering angles from 15 ~ to 120 ~ . The angular distributions at representative ejectile energies are compared with a phenomenological parametrization. Reasonable agreement between calculations and experimental data is obtained, but the comparison clearly indicates a need for modification to the parametrization to incorporate a smooth rather than a sharp transition in the energy dependence over the range investigated. This is physically more realistic and is therefore to be expected. The parametrization facilitates the identification of a contribution which behaves in accordance with a quasifree reaction mechanism. The magnitude and angular extent of the quasifree contribution are much larger than that inferred from earlier experiments.