Observation of Direct Vibrational Excitation in Gas-Surface Collisions: NO on Ag(111)

C. T. Rettner; F. Fabre; J. Kimman; D. J. Auerbach

doi:10.1103/PhysRevLett.55.1904

Observation of Direct Vibrational Excitation in Gas-Surface Collisions: NO on Ag(111)

C. T. Rettner, F. Fabre^*, J. Kimman^†, and D. J. Auerbach

IBM Research Laboratory, San Jose, California 95193

^*Permanent address: Service de Physique des Atomes et des Surfaces, Commissariat à l'Energie Atomique, Centre d'Etudes Nucléaires de Saclay, F-91191 Gif-sur-Yvette Cedex, France.
^†Permanent address: Fundamenteel Onderzoek der Materie-Instituut voor Atoom- en Molecuulfysica, Postbus 41883, 1009 DB Amsterdam, The Netherlands.

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Phys. Rev. Lett. 55, 1904 – Published 28 October, 1985

DOI: https://doi.org/10.1103/PhysRevLett.55.1904

Abstract

Vibrationally excited NO molecules have been observed in the scattering of $NO (v = 0)$ from Ag(111). A direct mechanism is inferred based on the observation of $v = 1$ angular distributions, which are quasispecular, and rotational-state distributions, which depend on beam energy. Vibrational excitation is found to depend strongly on surface temperature, $T_{S}$ , and relatively weakly on incident kinetic energy, $E$ , reaching (∼7±5)% at $T_{S} = 760$ K and $E = 120$ kJ ${mol}^{- 1}$ . These results are discussed in terms of an electronic mechanism for vibrational excitation.

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Observation of Direct Vibrational Excitation in Gas-Surface Collisions: NO on Ag(111)

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Observation of Direct Vibrational Excitation in Gas-Surface Collisions: NO on Ag(111)

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