Energy-Loss Contribution for Fast He Atoms Axially Scattered off a Silver Surface

C.A. RÍOS RUBIANO; G.A. BOCAN; J.I. JUARISTI; M.S. GRAVIELLE

Toledo

Conferencia; XXIX International Conference on Photonic, Electronic and Atomic Collisions; 2015

ICPEAC

Angle- and energy-loss- resolved distributions for He atoms axially scattered off a Ag(110) surface are calculatedin order to study the influence of inelastic processes on fast atom diffraction (FAD) spectra. Final projectile distributions areevaluated within a semi-classical formalism that includes dissipative effects due to electronic excitations. For monoenergeticbeams the model predicts the presence of multiple peaks in energy-loss spectra. But these structures disappear when the ex-perimental conditions are included, giving rise to an energy-loss distribution in good agreement with available experimentaldata. The inelastic contribution to FAD patterns is estimated.