Dynamical steering in an electron transfer surface reaction: Oriented NO(v=3, 0.08 < E-i < 0.89 eV) relaxation in collisions with a Au(111) surface
2014 | journal article. A publication of Göttingen
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Dynamical steering in an electron transfer surface reaction: Oriented NO(v=3, 0.08 < E-i < 0.89 eV) relaxation in collisions with a Au(111) surface
Bartels, N.; Golibrzuch, K.; Bartels, C.; Chen, L. I.; Auerbach, D. J.; Wodtke, A. M. & Schaefer, T. (2014)
The Journal of Chemical Physics, 140(5) art. 054710. DOI: https://doi.org/10.1063/1.4863862
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- Authors
- Bartels, Nils; Golibrzuch, Kai; Bartels, Christof; Chen, L. I.; Auerbach, Daniel J.; Wodtke, Alec Michael; Schaefer, Tim
- Abstract
- We report measurements of the incidence translational energy dependence of steric effects in collisions of NO(v = 3) molecules with a Au(111) surface using a recently developed technique to orient beams of vibrationally excited NO molecules at incidence energies of translation between 0.08 and 0.89 eV. Incidence orientation dependent vibrational state distributions of scattered molecules are detected by means of resonance enhanced multiphoton ionization spectroscopy. Molecules oriented with the N-end towards the surface exhibit a higher vibrational relaxation probability than those oriented with the O-end towards the surface. This strong orientation dependence arises from the orientation dependence of the underlying electron transfer reaction responsible for the vibrational relaxation. At reduced incidence translational energy, we observe a reduced steric effect. This reflects dynamical steering and re-orientation of the NO molecule upon its approach to the surface. (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
- Sponsor
- Alexander von Humboldt Foundation