CO (a(3) Pi) quenching at a metal surface: Evidence of an electron transfer mediated mechanism
2014 | journal article. A publication of Göttingen
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Graetz, Fabian, Daniel P. Engelhart, Roman J. V. Wagner, Gerard Meijer, Alec Michael Wodtke, and Tim Schaefer. "CO (a(3) Pi) quenching at a metal surface: Evidence of an electron transfer mediated mechanism." The Journal of Chemical Physics 141, no. 4 (2014): 044712. https://doi.org/10.1063/1.4887777.
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Details
- Authors
- Graetz, Fabian; Engelhart, Daniel P.; Wagner, Roman J. V.; Meijer, Gerard; Wodtke, Alec Michael; Schaefer, Tim
- 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. (C) 2014 AIP Publishing LLC.
- Issue Date
- 2014
- Status
- published
- Publisher
- Amer Inst Physics
- Journal
- The Journal of Chemical Physics
- ISSN
- 1089-7690; 0021-9606
