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

We investigate the interplay of Coulomb dissociation and the nuclear b reakup mechanisms in describing the angular distributions of the neutr ons emitted in the exclusive (Be-11, Be-10+n) as well as the inclusive (Be-11, n) reactions on several targets measured recently. Experiment al data for both types of reactions can be well understood within thes e mechanisms. The ''inelastic'' interactions of the Be-10 fragment wit h the target nucleus are found to be crucial for describing both shape s and the absolute magnitudes of the inclusive neutron angular distrib utions. The exclusive angular distributions appear to be better suited for extracting information about the structure of the projectile.