Charge exchange and hybridization in ion-surface interactions

Level shifts and widths for hydrogenic states (nlm) interacting with a metal surface have been calculated perturbatively for large n(n=1...20) and different model perturbation potentials. The shifts approximately scale with the ion-surface distance in units of the classical orbital radius, rn, of the hydrogenic manifold. As special cases previous results were confirmed. Based on the perturbative results, self energy matrices including various n-manifolds were obtained which allowed for the calculation of diabatic and adiabatic non-perturbative level shifts and widths, and hybrid orbitals. A new close-coupling calculation is being developed around these matrix elements, that will be applied to the interaction of ions in various charge states with metal surfaces