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  CO (a 3Π) 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 3Π) 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-0000-0023-D103-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0025-09D4-2
Genre: Journal Article

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 Creators:
Grätz, Fabian1, 2, 3, Author              
Engelhart, Dan P.1, 3, Author              
Wagner, Roman J. V.1, Author
Meijer, Gerard2, Author              
Wodtke, Alec M.1, Author
Schäfer, Tim1, 3, Author
Affiliations:
1Department of Dynamics and Surfaces, MPI for biophysical chemistry, Max Planck Society, ou_578600              
2Molecular Physics, Fritz Haber Institute, Max Planck Society, ou_634545              
3Georg-August-Universität Göttingen, Institut für Physikalische Chemie, Tammannstr. 6, 37077 Göttingen, Germany , ou_persistent22              

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Free keywords: Electron emission Electron surface collisions Metal surfaces Surface states Electron transfer
 Abstract: We observe a strong influence of molecular vibration and surface temperature on electron emission promoted by the de-excitation of metastable CO (a 3Π) 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: 2014-04-302014-06-202014-07-292014-07-28
 Publication Status: Published in print
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1063/1.4887777
 Degree: -

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Title: The Journal of Chemical Physics
  Other : J. Chem. Phys.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Institute of Physics
Pages: - Volume / Issue: 141 (4) Sequence Number: 044712 Start / End Page: - Identifier: ISSN: 0021-9606
CoNE: /journals/resource/954922836226