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  Incidence energy dependent state-to-state time-of-flight measurements of NO(v=3) collisions with Au(111): the fate of incidence vibrational and translational energy.

Golibrzuch, K., Shirhatti, P. R., Rahinov, I., Auerbach, D. J., Wodtke, A. M., & Bartels, C. (2014). Incidence energy dependent state-to-state time-of-flight measurements of NO(v=3) collisions with Au(111): the fate of incidence vibrational and translational energy. Physical Chemistry Chemical Physics, 16(16), 7602-7610. doi:10.1039/c3cp55224a.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-133F-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-CBEF-9
Genre: Journal Article

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Golibrzuch, K.1, Author              
Shirhatti, P. R.1, Author              
Rahinov, I., Author
Auerbach, D. J.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 report measurements of translational energy distributions when scattering NO(v(i) = 3, J(i) = 1.5) from a Au(111) surface into vibrational states v(f) = 1, 2, 3 and rotational states up to J(f) = 32.5 for various incidence energies ranging from 0.11 eV to 0.98 eV. We observed that the vibration-to-translation as well as the translation-to-rotation coupling depend on translational incidence energy, E-I. The vibration-to-translation coupling, i.e. the additional recoil energy observed for vibrationally inelastic (v = 3 -> 2, 1) scattering, is seen to increase with increasing E-I. The final translational energy decreases approximately linearly with increasing rotational excitation. At incidence energies E-I > 0.5 eV, the slopes of these dependencies are constant and identical for the three vibrational channels. At lower incidence energies, the slopes gradually approach zero for the vibrationally elastic channel while they exhibit more abrupt transitions for the vibrationally inelastic channels. We discuss possible mechanisms for both effects within the context of nonadiabatic electron-hole pair mediated energy transfer and orientation effects.

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Language(s): eng - English
 Dates: 2014-04-28
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1039/c3cp55224a
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Title: Physical Chemistry Chemical Physics
Source Genre: Journal
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Pages: - Volume / Issue: 16 (16) Sequence Number: - Start / End Page: 7602 - 7610 Identifier: -