Elastic and quasielastic barrier distributions for light neutron-rich nuclei: The role of neutron stripping channels

Abstract

Recent interest in the elastic and quasielastic barrier distributions of systems involving weakly bound light projectiles has concentrated on the influence of coupling to breakup. We show that, for light neutron-rich radioactive beams, single-neutron stripping also has an important effect on the calculated barrier distribution. We also show that the recent suggestion that for such systems the quasielastic barrier distribution will not be exactly equivalent to the true fusion barrier distribution seems to hold true, although in the particular case investigated here the discrepancy in the barrier peak position, $0.25$ MeV, is considerably smaller than that found experimentally for the $^{6}\mathrm{Li}+^{144}\mathrm{Sm}$ system, $1.5$ MeV, where breakup is considered to be most important.