Model calculation of n+Li-6 reactions below 20 MeV

Based on the unified Hauser-Feshbach and exciton model for light nuclei, th e calculations of reaction cross sections and the double-differential cross sections for n + Li-6 are performed. Since all of the first-particle emiss ions are from the compound nucleus to the discrete levels, the angular mome ntum coupling effect in pre-equilibrium mechanism must be taken into accoun t. The fitting of the measured data indicates that the three-body break-up process needs to be involved, and the pre-equilibrium reaction mechanism do minates the reaction processes. In light nucleus reactions the recoil effec t must be taken into account.