Investigation of16O+16O elastic scattering using theα-cluster folding model

Abstract

Angular distributions of ${}^{16}\mathrm{O}\phantom{\rule{0.16em}{0ex}}+{\phantom{\rule{0.16em}{0ex}}}^{16}$O 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 \ensuremath{\alpha}-cluster structure of the ${}^{16}$O nucleus, two different versions of the real DF optical potential have been generated by using three effective \ensuremath{\alpha}-\ensuremath{\alpha}, \ensuremath{\alpha}-nucleon ($N$) and nucleon-nucleon ($\mathit{NN}$) interactions. A microscopic optical potential built upon the M3Y effective $\mathit{NN}$ interaction and the matter density distribution of the ${}^{16}$O 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 \ensuremath{\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.