The elastic scattering of nucleons by carbon, at incident energies of 142, 210, and 330 MeV, is calculated from an optical potential retaining all terms to second order in the $N-N$ amplitudes. The amplitudes are calculated using recent $N-N$ phase-parameter sets obtained by the Yale, Livermore, and Michigan State Groups. Nuclear correlation functions of both the Fermi and Brueckner-Gammel types are used to represent nuclear structure. Comparison with experiment is made in order to distinguish among different $N-N$ phase-parameter sets, and among different types of nuclear correlation functions.

• Received 15 October 1970

DOI:https://doi.org/10.1103/PhysRevC.3.968