Crapone a Fortran IV code for the automatic search for local and non local optical potential parameters for neutrons

Crapone is a Fortran IV code designed to search automatically for neutron optical model parameters. The fitting procedure can be applied to different sets of experimental data depending on the local or non local approximations choice. In any case total, elastic, differential elastic cross sections, e=0, e=1 strength functions and scattering length can be considered. In the non local approximation the fitting procedure can be simultaneously performed over the whole energy range. (authors)