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Proceedings Paper

Nonthermal surface chemistry: collision-induced reactions of NH3 on Pt{111}
Author(s): Greg J. Szulczewski; Robert J. Levis
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Paper Abstract

We report the collision-induced desorption and dissociation of two molecular forms of ammonia bound to a Pt{111} single crystal by a beam of translationaly energetic, neutral noble gas atoms. In this experiment the probability for desorption at low coverage is measured as a function of the collision energy between an Ar atom and chemisorbed ammonia molecule and is found to be independent of the Ar beam angle of incidence. At higher initial ammonia coverages the probability of collision-induced desorption is greater since the NH3/Pt{111} binding energy is much weaker. In addition we observe formation of surface NHx products generated in a process known as collision-induced dissociation.

Paper Details

Date Published: 21 July 1994
PDF: 10 pages
Proc. SPIE 2125, Laser Techniques for Surface Science, (21 July 1994); doi: 10.1117/12.180834
Show Author Affiliations
Greg J. Szulczewski, Wayne State Univ. (United States)
Robert J. Levis, Wayne State Univ. (United States)

Published in SPIE Proceedings Vol. 2125:
Laser Techniques for Surface Science
Hai-Lung Dai; Steven J. Sibener, Editor(s)

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