The resonating-group method, together with a complex-generator-coordinate technique, is used to investigate the $n$ + ${}_{}{}^6{}_{}{}^{}\mathrm{Li}$ scattering problem. The result shows that, by including a phenomenological imaginary potential in the formulation to take approximate account of reaction effects, a good agreement with experiment can be obtained for both the differential scattering and the total reaction cross sections. The effect of the Pauli principle on the nature of the effective internuclear potential is also examined. Here it is found that the blocking effect, arising from the presence of two nucleons in the nonclosed $1p$ shell of ${}_{}{}^6{}_{}{}^{}\mathrm{Li}$, has a profound influence on the odd-even orbital-angular-momentum dependence of this potential.

[NUCLEAR REACTIONS ${}_{}{}^6{}_{}{}^{}\mathrm{Li}\mathrm{}(n,n)\mathrm{}$; calculated phase shifts and $\sigma \left(\theta \right)$. Resonating-group method with complex-generator-coordinate technique.]

• Received 10 August 1977

DOI:https://doi.org/10.1103/PhysRevC.17.447