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A molecular-beam study of the dissociative chemisorption of O2 on Ir(110)-(1×2)

Mullins, C. B. and Wang, Y. and Weinberg, W. H. (1989) A molecular-beam study of the dissociative chemisorption of O2 on Ir(110)-(1×2). Journal of Vacuum Science and Technology A, 7 (3). pp. 2125-2126. ISSN 0734-2101. http://resolver.caltech.edu/CaltechAUTHORS:MULjvsta89

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Abstract

The zero-coverage probability of dissociative chemisorption of O2 on Ir(110)-(1×2) has been measured using molecular-beam techniques for a wide range of incident kinetic energies, incident angles, and surface temperatures. The data indicate that a trapping-mediated mechanism is responsible for dissociative chemisorption at low energies, whereas at high energies a direct mechanism accounts for dissociative adsorption. Total energy scaling approximately describes the dissociative dynamics on the very corrugated Ir(110)-(1×2) surface.


Item Type:Article
Additional Information:© 1989 American Vacuum Society. (Received 14 October 1988; accepted 31 October 1988) This work was supported by the National Science Foundation under Grant No. CHE-8617826. [C.B.M. was an] IBM Predoctoral Fellow.
Subject Keywords:OXYGEN; CHEMISORPTION; DISSOCIATION; MOLECULAR BEAMS; CHEMICAL REACTION KINETICS; IRIDIUM; SURFACE REACTIONS; HIGH TEMPERATURE; PROBABILITY; EXPERIMENTAL DATA; MEDIUM TEMPERATURE
Record Number:CaltechAUTHORS:MULjvsta89
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:MULjvsta89
Alternative URL:http://dx.doi.org/10.1116/1.575985
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10790
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:10 Jun 2008
Last Modified:26 Dec 2012 10:05

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