Phenomenological and microscopic optical potentials for 88 MeV7Li scattering

Abstract
The elastic scattering cross sections for 88 MeV 7Li ions have been measured for targets of 24,26Mg and 40,48Ca. Analyses using both phenomenological and microscopic optical potentials provide information on the energy dependence of optical parameters, and the extent to which the potentials are determined for these light ions. The use of a double-folding microscopic model demonstrates the need for normalisation of the real potential by a factor of 0.5 in contrast to measurements at lower energies. The contribution of exchange effects density dependence and break-up are discussed.