DOI: 10.1063/1.462220. Photoinduced dissociative electron attachment of CH3Br on Pt(111): The role of the local work function

Photoinduced dissociative electron attachment of CH3Br on Pt(111): The role of the local work function

10.1063/1.462220

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

The photoinduced dissociative electron attachment of CH3Br on Pt(111) has been examined by measuring CH3 photofragment translational energy distributions from CH3Br adsorbed on Xe multilayers deposited upon CH3Br covered Pt(111). Subvacuum level, photoexcited substrate electrons produced by 308 nm laser irradiation were found to propagate through the Xe layer where attachment to CH3Br led to fragmentation. A simple model for surface dissociative electron attachment, DEA, was found to quantitatively predict the observed fragmentation dynamics for the CH3Br/Xe/CH3Br/Pt(111) system. The role of the local work function in surface DEA processes was explored by examining the dependence of the photofragment yield upon the thickness of the intermediate Xe layer and the fractional coverage of the Pt(111) bound first layer of CH3Br. Three dimensional variation of the local work function above the substrate was required to account for the observed DEA dynamics.

Bibliography

Ukraintsev, V. A., Long, T. J., Gowl, T., & Harrison, I. (1992). Photoinduced dissociative electron attachment of CH3Br on Pt(111): The role of the local work function. The Journal of Chemical Physics, 96(12), 9114â9121.

Authors 4

V. A. Ukraintsev (first)
T. J. Long (additional)
T. Gowl (additional)
I. Harrison (additional)

References 25 Referenced 26

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Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 8:21 a.m.)
Deposited	1 year, 6 months ago (Feb. 10, 2024, 9:30 a.m.)
Indexed	1 year, 6 months ago (Feb. 10, 2024, 4:46 p.m.)
Issued	33 years, 2 months ago (June 15, 1992)
Published	33 years, 2 months ago (June 15, 1992)
Published Print	33 years, 2 months ago (June 15, 1992)

Funders 0

None

BibTeX

@article{Ukraintsev_1992, title={Photoinduced dissociative electron attachment of CH3Br on Pt(111): The role of the local work function}, volume={96}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.462220}, DOI={10.1063/1.462220}, number={12}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Ukraintsev, V. A. and Long, T. J. and Gowl, T. and Harrison, I.}, year={1992}, month=jun, pages={9114–9121} }

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