Theoretical calculation of the $p-{}^6\mathrm{Li}$ radiative capture reaction

Abstract

We present a new calculation of the ${}^6\mathrm{Li}(p,\gamma ){}^7\mathrm{Be}$ radiative capture astrophysical $S$-factor in a cluster model framework. We consider several intercluster potentials, adjusted to reproduce the ${}^7\mathrm{Be}$ bound state properties and the $p-{}^6\mathrm{Li}$ elastic scattering phase shifts. Using these potentials, we calculate the astrophysical $S$-factor, obtaining a good agreement with available data, and the photon angular distribution. Finally, we discuss the consequences of a hypothetical resonance-like structure on the $S$-factor.

Comments: 27 pages, 9 figures