Direct Radiative Capture ofHe3by Tritons andt+He3Cluster States inLi6

Abstract

A direct-capture model is used to calculate the cross section for the capture of ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ by tritons. Comparisons with data to 20 MeV show that the energy dependence of the ground-state capture cross section is well accounted for and that there exists substantial $t+{}_{}{}^3{}_{}{}^{}\mathrm{He}$ clustering in the first three ${}_{}{}^6{}_{}{}^{}\mathrm{Li}$ states.