A Common Optical Potential for ${}^4$He+${}^{12}$C at Intermediate Energies

Abstract

A common optical potential for ${}^4$He+${}^{12}$C at intermediate bombarding energies, which is essential in analyzing exotic nuclei with ${}^4$He clusters, was obtained based on the São Paulo potential (SPP). Among systematic optical potentials for ${}^4$He+${}^{12}$C, this potential has the merit of using a fixed imaginary part of Woods-Saxon form. By optical-model calculations, this potential reproduced the experimental elastic scattering angular distributions of ${}^4$He+${}^{12}$C well within the energy range of 26\,$A$--60\,$A$ MeV. It was also applied successfully in calculations of the breakup reactions of ${}^6$Li+${}^{12}$C and ${}^6$He+${}^{12}$C with a three-body continuum discretized coupled-channels method.