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Diffraction of swift atoms after grazing scattering from metal surfaces: N/Ag(111) system

AutorGravielle, M. S.; Bocan, Gisela A.; Díez Muiño, Ricardo
Fecha de publicación2010
EditorAmerican Physical Society
CitaciónPhysical Review A 82(5): 052904 (2010)
ResumenDiffraction patterns produced by grazing scattering of fast N atoms from a Ag(111) surface are investigated by employing the surface eikonal approximation. This method is a distorted-wave theory that takes into account the coherent addition of contributions coming from different projectile paths. In the model the projectile-surface potential is obtained from an accurate density-functional theory calculation. The dependence of the scattered projectile spectra on impact energy and incidence channel is analyzed, and possible incident direction and energy range for the observation of the interference patterns are predicted. In addition, it is found that as a result of the high reactivity of N atoms, asymmetries of the surface potential might be detected through their effects on diffraction patterns.
Descripción6 páginas, 6 figuras.-- PACS number(s): 79.20.Rf, 79.60.Bm, 34.20.Cf, 61.85.+p
Versión del editorhttp://dx.doi.org/10.1103/PhysRevA.82.052904
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