Abstract
Angular distributions of O-16 + O-16 elastic scattering at energies that range from 124 to 1120 MeV have been analyzed in the framework of the double folding (DF) optical model. Based upon the alpha-cluster structure of the O-16 nucleus, two different versions of the real DF optical potential have been generated by using three effective alpha-alpha, alpha-nucleon (N) and nucleon-nucleon (NN) interactions. A microscopic optical potential built upon the M3Y effective NN interaction and the matter density distribution of the O-16 nucleus has also been extracted. The obtained real potentials, in conjunction with phenomenological squared Woods-Saxon imaginary parts, have successfully reproduced seven sets of elastic-scattering data. No renormalization of the real folded alpha-cluster potentials is required to fit the data. The energy dependence of the extracted real and imaginary volume integrals and total reaction cross section has also been investigated.