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

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