Channel-coupling effects on the properties of the n + ${}_{}{}^6{}_{}{}^{}\mathrm{Li}$ system are studied. The channels included are n + ${}_{}{}^6{}_{}{}^{}\mathrm{Li}$, n + ${}_{}{}^6{}_{}{}^{}\mathrm{Li}_{}^{*}{}_{}{}^{}$, and ${}_{}{}^3{}_{}{}^{}\mathrm{H}+\alpha$ channels. The calculation shows that there exist $S=\frac{1}{2}$, $L=0\mathrm{} \mathrm{and} 1$ resonance states in the n + ${}_{}{}^6{}_{}{}^{}\mathrm{Li}$ continuum, in agreement with the result of a recent $R$-matrix study. In addition, it is found that the ${}_{}{}^3{}_{}{}^{}\mathrm{H}+\alpha$ channel has a substantial influence, indicating that the energetically most-favored cluster configuration must always be considered in a resonating-group investigation. The coupling between n + ${}_{}{}^6{}_{}{}^{}\mathrm{Li}$ and n + ${}_{}{}^6{}_{}{}^{}\mathrm{Li}_{}^{*}{}_{}{}^{}$ channels turns out generally to be fairly weak, although it does become somewhat enhanced when the ${}_{}{}^3{}_{}{}^{}\mathrm{H}+\alpha$ channel is included in the calculation.

• Received 17 February 1984

DOI:https://doi.org/10.1103/PhysRevC.29.2025