PHOTODISINTEGRATION OF THE LI-7 NUCLEUS THROUGH THE N(6)LI CHANNEL INTHE POTENTIAL CLUSTER MODEL INVOLVING FORBIDDEN STATES

The photodisintegration of the Li-7 nucleus through the n(6)Li channel is considered on the basis of a potential two-cluster model. Interclu ster-interaction potentials involve forbidden states and reproduce the phase shifts of low-energy elastic scattering that are obtained by th e resonating-group method. The proposed model is shown to describe the total cross section for photodisintegration in the energy range under consideration. Complete classification of allowed and forbidden state s in cluster channels is given for nuclei with atomic numbers A = 7 an d 8.