Multinucleon transfer reactions for the (sup 50)Ti+(sup 93)Nb system at sub- and near-barrier energies

摘要

A significant yield of multinucleon-transfer products is observed at back angles in quasielastic reactions between (sup 50)Ti and (sup 93)Nb at sub- and near-barrier energies. A variety of nuclidic species that require transfers of up to four nucleons are observed for E(sub c.m.) (ge) 103.9 MeV. The internuclear separation distance where the multinucleon-transfer products first emerge nearly coincides with the closest approach distance of the experimentally established fusion threshold energy, indicating a common origin for the fusion enhancement and multinucleon-transfer reactions.