Hood, E. S. and Toby, B. H. and Weinberg, W. H. (1985) Summary Abstract: A theoretical study of the effect of lateral interactions on molecular adsorption and desorption. Journal of Vacuum Science and Technology A, 3 (3). pp. 1564-1565. ISSN 0734-2101 http://resolver.caltech.edu/CaltechAUTHORS:HOOjvsta85
- Published Version
See Usage Policy.
Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:HOOjvsta85
The effect of lateral interactions between coadsorbed molecules on adsorbate island growth and the kinetics of adsorption and desorption have been studied within the constraints of a lattice gas model incorporating a combination of deterministic rate equations with a stochastic formulation. The adsorption and desorption of molecular nitrogen on Ru(001) has been investigated in detail. Recent experiments performed at 77 K reveal an unusual functional dependence of the probability of adsorption which displays a maximum at a coverage of approximately 0.2 monolayer [1,2]. EEL spectra indicate chemisorption of molecular nitrogen occurs only at atop sites with the molecular axis oriented perpendicular to the surface plane . Saturation coverage is achieved at approximately 0.5 monolayer [1,2]. Thermal desorption spectra suggest the presence of two distinct chemisorption states at coverages greater than 0.25 monolayer. Quantitative agreement between calculated and experimental thermal desorption spectra as well as the coverage-dependent probability of adsorption is obtained.
|Additional Information:||© 1985 American Vacuum Society. Received 1 November 1984; accepted 13 January 1985. Supported by the National Science Foundation under Grant No. CHE82-06487. [E.S.H. was a] Bantrell Postdoctoral Fellow.|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||15 Dec 2008 19:07|
|Last Modified:||26 Dec 2012 10:36|
Repository Staff Only: item control page