BREAKUP PROCESSES IN THE SYSTEMS 6LI, 17F+208PB

Recent data on inclusive and exclusive breakup and on fusion at Coulomb barrier energies are presented and comparatively discussed for the systems 6Li,17F+208Pb. Both projectiles are very loosely bound and moreover 17F is an unstable beam. The breakup strength in 6Li, bound by 1.47 MeV, is one order of magnitude larger than in 17F, bound by 0.60 MeV; this is at contrary to simple expectations and suggests that other effects, maybe connected to the specific structure of the nuclei (e.g. 6Li cluster structure ?), in addition to the binding energies, influence the breakup process.