Optical model analysis of the elastic scattering of 12.29 MeV protons by Cu 63 and Cu 65

Abstract

A detailed optical model analysis is made of the elastic scattering of protons by Cu 63 and Cu 65. A good fit is obtained for both isotopes using the Saxon-Woods form factor for the real and imaginary parts of the potential. Surface peaking of the imaginary part and extension of the imaginary part beyond the real part of the potential lead to a deterioration in the quality of the fit. The reaction cross section measurements do not determine the radial distribution of the imaginary part of the potential. The difference between the elastic cross sections of the two isotopes cannot be attributed to a change in only one optical model parameter, but the isobaric spin dependence of the real part of the central potential has been investigated and the results are consistent with values reported elsewhere