Theoretical description of keV hydrogen interaction with jellium metal

The shift and broadening of the valence and affinity levels of an atom interacting with a metal surface are calculated at all distances outside the surface using a linearized Fermi-Thomas approximation to calculate the Hamiltonian of the bond electron, and first order perturbation theory. The effective charges on both levels are then calculated for all distances from jellium metal at zero temperature. A semi-classical approach is then used to illustrate the relative importance of the charge state in the bulk, the surface and near surface regions to the final charge state of hydrogen reflected from gold in the energy region 0.1-8 keV. (Auth.)