We report evidence for the occurrence of sub-surface oxygen incorporation during the dissociation process of admolecules. The process is observed for O-2 chemisorbed on Ag(001) at a surface temperature of 100 K, where thermally activated sub-surface diffusion is inactive. The phenomenon occurs both when dissociation is induced thermally or by electron bombardment. EELS peaks corresponding to the vibration of adatoms and of sub-surface oxygen are observed. (C) 1999 Elsevier Science B.V. All rights reserved.
Sub-surface incorporation of oxygen on Ag(001) during molecular dissociation
CUPOLILLO, Anna;
1999
Abstract
We report evidence for the occurrence of sub-surface oxygen incorporation during the dissociation process of admolecules. The process is observed for O-2 chemisorbed on Ag(001) at a surface temperature of 100 K, where thermally activated sub-surface diffusion is inactive. The phenomenon occurs both when dissociation is induced thermally or by electron bombardment. EELS peaks corresponding to the vibration of adatoms and of sub-surface oxygen are observed. (C) 1999 Elsevier Science B.V. All rights reserved.File in questo prodotto:
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