Nuclear reaction induced by halo nuclei around the Coulomb barrier

Abstract

We investigate in the framework of the semiclassical approximation the relative importance onf the Coulomb and nuclear fields to induce the break-up of neutron rich nuclei such as LI at energies close to the Coulomb barrier. We assume that the mechanism that leads to the separation is the excitation of a low-lying dipole mode in wich the weakly-bound neutron halo performs a collective oscillation against the residual nuclear core. Consecuences of the couplings for elastic scattering and fusion processes are also discussed.