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Título

Second-Order Semiclassical Perturbation Theory for Diffractive Scattering from a Surface

AutorPollak, E.; Miret-Artés, Salvador
Fecha de publicación17-nov-2014
EditorAmerican Chemical Society
CitaciónJournal of Physical Chemistry C 119: 14532-14541 (2015)
ResumenA second-order semiclassical perturbation theory is developed and applied to the elastic scattering of an atom from a corrugated surface. Analytical expressions for the diffraction pattern in the momentum space are obtained based on a sine corrugation function and a Morse potential for the interaction of the particle with the surface. The theory is implemented for a model of the in-plane scattering of Ar atoms from a LiF(100) surface. The resulting diffraction intensities are compared with second-order perturbation theory classical distributions and close-coupling results for two incident energies of 300 and 700 meV. The previous first-order perturbation theory predicts a symmetric diffraction pattern about the elastic peak, while the second-order semiclassical perturbation theory accounts correctly for the asymmetry in the diffraction pattern. © 2014 American Chemical Society
Descripción10 págs.; 3 figs.; 2 apps.
Versión del editorhttp://dx.doi.org/10.1021/jp509500v
URIhttp://hdl.handle.net/10261/135364
DOI10.1021/jp509500v
Identificadoresdoi: 10.1021/jp509500v
issn: 1932-7455
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