Scattering of Protons by Ne²⁰ and Ne²²

Abstract

The angular distributions of protons scattered elastically and inelastically by Ne²⁰ and Ne²² have been observed at six energies from 4.95 to 5.50 Mev. The shape of angular distribution of inelastically scattered protons varies rapidly with incident energy in boths cases of Ne²⁰ and Ne²². An anomaly is found at 5.25 Mev in the reaction Ne²⁰(p, p′)Ne²⁰(Q=−1.63 Mev). The elastic scatterings also exhibit the corresponding features. These results suggest that the reaction proceeds mainly through the compound nucleus formation process. The spin and parity of the compound state seem likely to be 5/2(+).