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  CO (a(3)Pi) quenching at a metal surface: Evidence of an electron transfer mediated mechanism.

Grätz, F., Engelhart, D. P., Wagner, R. J. V., Meijer, G., Wodtke, A. M., & Schäfer, T. (2014). CO (a(3)Pi) quenching at a metal surface: Evidence of an electron transfer mediated mechanism. The Journal of Chemical Physics, 141(4): 044712. doi:10.1063/1.4887777.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-001A-2DBE-F Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-9493-8
Genre: Journal Article

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2049603.pdf (Publisher version), 2MB
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Grätz, F.1, Author              
Engelhart, D. P.1, Author              
Wagner, R. J. V.1, Author              
Meijer, G., Author
Wodtke, A. M.1, Author              
Schäfer, T.1, Author              
Affiliations:
1Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society, ou_578600              

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 Abstract: We observe a strong influence of molecular vibration and surface temperature on electron emission promoted by the de-excitation of metastable CO(a(3)Pi) on a clean Au(111) surface using a molecular beam surface scattering apparatus. The de-excitation is independent of incidence translational energy. These observations appear incompatible with existing theories of metastable particle de-excitation on metal surfaces, which are based on the Auger effect. Instead, they strongly suggest a mechanism involving formation of a transient anion whose lifetime is similar to the vibrational period of the CO molecule.

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Language(s): eng - English
 Dates: 2014-07-29
 Publication Status: Published online
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 Rev. Method: Peer
 Identifiers: DOI: 10.1063/1.4887777
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Title: The Journal of Chemical Physics
Source Genre: Journal
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Pages: 8 Volume / Issue: 141 (4) Sequence Number: 044712 Start / End Page: - Identifier: -