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Title

Dissociative adsorption of N2 on W(110): Theoretical study of the dependence on the incidence angle

AuthorsAlducin Ochoa, Maite ; Díez Muiño, Ricardo ; Busnengo, Heriberto Fabio; Salin, Antoine
KeywordsGas/surface dynamics
Nitrogen molecule
W surface
Dissociative adsorption
Issue DateSep-2007
PublisherElsevier
CitationSurface Science 601(18): 3726-3730 (2007)
AbstractThe dissociative adsorption of N2 on W(110) is studied using classical dynamics on a six-dimensional potential energy surface obtained from density functional theory calculations. Two distinct channels are identified in the dissociation process: a direct one and an indirect one. It is shown that the direct channel is inhibited for low energy molecules (Ei < 400 meV) and low incidence angles. The indirect channel includes long-lasting dynamic trapping of the molecule at the surface before dissociation. The dependence of the sticking coefficient on the initial incidence angle is analyzed. The theoretical results compare well with values measured using molecular beam techniques.
Description5 páginas, 2 figuras.-- El Pdf del artículo es la versión post-print.
Publisher version (URL)http://dx.doi.org/10.1016/j.susc.2007.04.016
URIhttp://hdl.handle.net/10261/45975
DOI10.1016/j.susc.2007.04.016
ISSN0039-6028
Appears in Collections:(CFM) Artículos
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