ENHANCED COLLISION-INDUCED DESORPTION AND DISSOCIATION OF O-2 CHEMISORBED ON AG(001) AT GRAZING-INCIDENCE

Authors
VATTUONE L GAMBARDELLA P CEMIC F VALBUSA U ROCCA M
Citation
L. Vattuone et al., ENHANCED COLLISION-INDUCED DESORPTION AND DISSOCIATION OF O-2 CHEMISORBED ON AG(001) AT GRAZING-INCIDENCE, Chemical physics letters, 278(4-6), 1997, pp. 245-250
Citations number
17
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics letters → ACNP
ISSN journal
00092614
Volume
278
Issue
4-6
Year of publication
1997
Pages
245 - 250
Database
ISI
SICI code
0009-2614(1997)278:4-6<245:ECDADO>2.0.ZU;2-3
Abstract
We have investigated desorption and dissociation of O-2 chemisorbed on Ag(001) induced by collision with hyperthermal Xe and Ar atoms provid ed by a supersonic molecular beam. We find that the cross section for both processes increases rapidly with impact energy and with angle of incidence of the inert gas atom. A model is presented which accounts f or the observed energy threshold and for the trend in the cross sectio n. (C) 1997 Elsevier Science B.V.