Ion-Surface Interaction Potentials from Alkali-Ion-Metal Scattering below 500 eV.

摘要

Classical-trajectory calculations using an ion-surface potential which is represented as a sum of ion-atom pair potentials plus an attractive imagelike potential are compared to experimental results for the scattering of Na+ and K+ from Cu(110) in the energy range 100 eV < or = EO < or = 400 eV. The strong focusing of ion trajectories on this surface greatly enhances the sensitivity of the scattering to the form of the ion-surface interaction potential. We achieve very good agreement between calculated and experimental spectra using pair potentials computed within the Hartree-Fock approximation. Reprint, Ion, Ion interactions. (jes)