Abstract
The vector analyzing power and differential cross-section for the elastic scattering of He-8 nucleus from polarized protons at 71MeV/nucleon have been analyzed in the framework of the optical model potentials. Microscopic single folding (SF) optical potentials (OP) have been constructed based upon two different effective nucleon-nucleon (NN) interactions, namely Jeukenne-Lejeune-Mahaux (JLM) and BDM3Y1 effective interactions. The effect of He-8 nuclear structure has been tested through two different choices of the nuclear density distribution. It is concluded that the nucleus He-8 may be considered as a thick skin exotic nucleus. In order to investigate the vector analyzing power data, besides the Thomas phenomenological representation, three different forms of the spin-orbit (SO) part of the OP have been considered. These forms are based directly or indirectly upon the density distribution of He-8 nucleus. It is found that SO potentials of larger root mean square radii are able to successfully describe the vector analyzing power data more than those of shorter radii.