COMPLETE AND INCOMPLETE FUSION IN HEAVY-ION COLLISIONS

We develop a formalism to study the influence of the breakup process o f a weakly bound projectile on the complete fusion cross section. We s how that the complete fusion and the resulting incomplete fusion cross sections can be expressed in terms of breakup and survival probabilit ies, which are evaluated with the help of appropriate polarization pot entials. The effects of the finite size of the projectile and of Fermi motion are estimated. As examples, we consider light-heavy-ion collis ions where threshold effects play an interesting role.