DYNAMIC POLARIZATION POTENTIAL FOR LI-11 SCATTERING

We calculate the dynamic polarization potential for Li-11 scattering f rom C-12 at 637 MeV using both two- and three-body descriptions of the Li-11 structure and the Glauber theoretical treatment of the scatteri ng and breakup processes. We conclude that the recent observation of M ermaz, that the quasielastic scattering data for this system require a Li-11 optical potential with long range attractive surface terms in t he real and imaginary parts of the interaction, cannot be attributed t o inelastic excitation and breakup of the weakly bound neutron halo. S uch a strong surface attraction is difficult to reconcile with the bes t few-body description of the reaction where the real part of the dyna mic polarization potential is found to be consistently repulsive in th e far nuclear surface over a wide range of theoretical inputs.