Multichannel optical mole theory of proton-hydrogen and proton-helium elastic scattering at intermediate energies

The elastic scattering of intermediate velocity protons by atomic hydrogen and helium is analysed within the framework of the second-order optical potential method, taking into account the charge-exchange channel. For H +-H scattering the results are in good agreement with the measurements by Rille et al. (1984), while for the H+-He case there is a significant discrepancy with the experimental data of Peacher of el. (1982). Results for incident antiprotons are also presented.