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Proceedings Paper

Simulating surface femtochemistry: coverage dependence of laser-induced desorption of CO from copper surfaces
Author(s): Clayton Springer; Martin Head-Gordon
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Paper Abstract

The method of molecular dynamics with electronic frictions is employed to simulate femtosecond laser induced desorption of CO from Cu(100), at an initial surface temperature of 95 K. The effect of adsorbate coverage is assessed by comparing simulations at low coverage, and 0.5 ML coverage. For desorption due to a single 100 fs laser pulse, a significant enhancement of desorption yield due to overlayer coverage is obtained, particularly at the highest laser fluence considered (60 J m-2). The origin of this coverage dependence is discussed. Additionally, the simulations are reported in which the exciting laser pulse is split into two components, separated by a variable time delay.

Paper Details

Date Published: 25 September 1995
PDF: 11 pages
Proc. SPIE 2547, Laser Techniques for Surface Science II, (25 September 1995); doi: 10.1117/12.221467
Show Author Affiliations
Clayton Springer, Univ. of California/Berkeley (United States)
Martin Head-Gordon, Univ. of California/Berkeley (United States)

Published in SPIE Proceedings Vol. 2547:
Laser Techniques for Surface Science II
Janice M. Hicks; Wilson Ho; Hai-Lung Dai, Editor(s)

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