ANGULAR-DISTRIBUTIONS OF NEUTRONS EMITTED IN THE FRAGMENTATION REACTIONS OF BE-11

We investigate the interplay of Coulomb dissociation and the nuclear breakup mechanisms in describing the angular distributions of the neutrons emitted in the exclusive (Be-11, Be-10+n) as well as the inclusive (Be-11, n) reactions on several targets measured recently. Experimental data for both types of reactions can be well understood within these mechanisms. The ''inelastic'' interactions of the Be-10 fragment with the target nucleus are found to be crucial for describing both shapes and the absolute magnitudes of the inclusive neutron angular distributions. The exclusive angular distributions appear to be better suited for extracting information about the structure of the projectile.