Direct Interactions and theLi6+Li6→α+α+αReaction

The interaction of ${}_{}{}^6{}_{}{}^{}\mathrm{Li}$ with ${}_{}{}^6{}_{}{}^{}\mathrm{Li}$ was found to yield three ${}_{}{}^4{}_{}{}^{}\mathrm{He}$ nuclei via a direct process, as well as through intermediate ${}_{}{}^8{}_{}{}^{}\mathrm{Be}$ states. Large peaks attributed to direct interactions were observed in the experimental data at bombarding energies of 2.0, 6.0, and 13.0 MeV. These peaks were fitted using a simple model which assumed an $\alpha +d$ cluster structure for the ${}_{}{}^6{}_{}{}^{}\mathrm{Li}$ nuclei and an interaction potential which acted only between the deuterons.