Dissociative and nondissociative sticking of O sub 2 at the Ag(111) surface

A molecular oxygen beam has been used to study the dissociative and molecular sticking probability at the Ag(111) surface as a function of incidence energy and angle, surface temperature and surface coverage. Two mechanisms are seen to play a role in the dissociative sticking: a direct and a precurs...

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Bibliographic Details
Published in:Surface science 1996-02, Vol.347 (1-2), p.151-168
Main Authors: Raukema, A, Butler, D A, Box, F M A, Kleyn, A W
Format: Article
Language:English
Online Access:Get full text
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Summary:A molecular oxygen beam has been used to study the dissociative and molecular sticking probability at the Ag(111) surface as a function of incidence energy and angle, surface temperature and surface coverage. Two mechanisms are seen to play a role in the dissociative sticking: a direct and a precursor mediated one. Both are strongly activated by the incidence energy. The molecular chemisorption state is shown to be the precursor to dissociation. Results on oxygen desorption are also discussed.
ISSN:0039-6028