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  Electron hole pair mediated vibrational excitation in CO scattering from Au(111): Incidence energy and surface temperature dependence.

Shirhatti, P. R., Werdecker, J., Golibrzuch, K., Wodtke, A. M., & Bartels, C. (2014). Electron hole pair mediated vibrational excitation in CO scattering from Au(111): Incidence energy and surface temperature dependence. Journal of Chemical Physics, 141(12): 124704. doi:10.1063/1.4894814.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-27EC-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-948E-5
Genre: Journal Article

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2069813.pdf (Publisher version), 788KB
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Shirhatti, P. R.1, Author              
Werdecker, J., Author
Golibrzuch, K.1, Author              
Wodtke, A. M.1, Author              
Bartels, C.1, Author              
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1Department of Dynamics at Surfaces, MPI for biophysical chemistry, Max Planck Society, ou_578600              

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 Abstract: We investigated the translational incidence energy (E i ) and surface temperature (T s ) dependence of CO vibrational excitation upon scattering from a clean Au(111) surface. We report absolute v = 0 → 1 excitation probabilities for E i between 0.16 and 0.84 eV and T s between 473 and 973 K. This is now only the second collision system where such comprehensive measurements are available – the first is NO on Au(111). For CO on Au(111), vibrational excitation occurs via direct inelastic scattering through electron hole pair mediated energy transfer – it is enhanced by incidence translation and the electronically non-adiabatic coupling is about 5 times weaker than in NO scattering from Au(111). Vibrational excitation via the trapping desorption channel dominates at E i = 0.16 eV and quickly disappears at higher E i

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Language(s): eng - English
 Dates: 2014-09-242014-09-28
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1063/1.4894814
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Title: Journal of Chemical Physics
Source Genre: Journal
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Pages: 8 Volume / Issue: 141 (12) Sequence Number: 124704 Start / End Page: - Identifier: -