AVS 46th International Symposium
    Surface Science Division Tuesday Sessions
       Session SS-TuP

Paper SS-TuP5
Adsorption Dynamics of Oxygen on Al(111)

Tuesday, October 26, 1999, 5:30 pm, Room 4C

Session: Poster Session
Presenter: A.J. Komrowski, University of California, San Diego
Authors: A.J. Komrowski, University of California, San Diego
Y. Liu, Syagen Technologies, Inc.
A.C. Kummel, University of California, San Diego
Correspondent: Click to Email
The interaction of oxygen with aluminum has become a prominent system in the study of metal oxidation. A previous study of Al(111) reacted with thermal O@sub 2@ at low coverages observed isolated features separated by >80 Angstroms which were attributed as dissociated O atoms.@footnote 1@ We have studied the oxidation of Al(111) using supersonic molecular beam techniques and scanning tunneling microscopy. The adsorption of monoenergetic O@sub 2@ on the Al(111) surface shows a change in the chemisorption site distribution (single reacted sites vs. doubles) with incident translational energy. We will contrast the O@sub 2@--Al(111) reaction against data from the reaction of supersonic oxygen atoms with Al(111) and compare the chemisorption results between activated and non-activated processes. @FootnoteText@ @footnote 1@ Brune, H. et. al. J. Chem. Phys. v99, 2128 (1993).