$p+^{4,6,8}He elastic scattering at intermediate energies
  Using a relativistic nuclear optical potential consisting of a Lorentz scalar, $V_{s}$, and the time-like component of a four-vector potential, $V_{0}$, we calculate elastic scattering differential cross sections and polarizations for $p+^{4}$He at intermediate energies for which experimental data are available. We also calculate the differential cross sections and analyzing powers for $p+^{6,8}$He at intermediate energies and compare with the few available experimental data. 
E.Baldini-Neto, B.V. Carlson, R.A. Rego and M.S. Hussein