Microscopic description of elastic scattering and reaction cross sections of 6Li and 11Li

Abstract

Abstract An attempt to a consistent description of both 6 Li and 11 Li scattering on 12 C and 28 Si is carried out in an optical model analysis. The optical potential results from a double folding calculation with G-matrix effective nucleon-nucleon interactions. With two renormalization parameters for the real and the imaginary parts of the potential, we describe the 6 Li-scattering and extract the energy dependence of the multiplicative factors. The renormalization procedure provides a satisfactory description of the elastic and reaction cross section for the 11 Li+ 12 C case. A simultaneous description of 11 Li+ 28 Si elastic and reaction cross sections requires a large renormalization of the optical model potential. At small angles, the magnitude and the phase of the 11 Li cross sections on both targets cannot be explained in terms of simple optical model amplitudes.