Elastic scattering of 6He based on a cluster description

Elastic scattering observables (differential cross section and analyzing power) are calculated for the reaction He-6(p,p)He-6 at projectile energies starting at 71 MeV/nucleon. The optical potential needed to describe the reaction is derived by describing He-6 in terms of a He-4 core and two neutrons. The Watson first-order multiple-scattering ansatz is extended to accommodate the internal dynamics of a composite cluster model for the He-6 nucleus scattering from a nucleon projectile. The calculations are compared with recent experiments at the projectile energy of 71 MeV/nucleon. In addition, differential cross sections and analyzing powers are calculated at selected higher energies.