Role of vibrational and translational energy in the activated dissociative adsorption of D2 on Cu(111)

C. T. Rettner, D. J. Auerbach, and H. A. Michelsen
Phys. Rev. Lett. 68, 1164 – Published 24 February 1992
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Abstract

We report the relative efficacy of vibrational and translational energy in overcoming the barrier to dissociative adsorption of D2 on a Cu(111) surface. This is determined by measuring variation of adsorption probability with kinetic energies, Ei, and vibrational temperature. At the highest energy (Ei=0.83 eV) adsorption is predominantly due to ground-state D2; molecules in excited vibrational states play the dominant role for Ei below ∼0.5 eV. A detailed analysis provides estimated adsorption probability versus energy functions for D2 in vibrational states v=0 to v=3.

  • Received 23 August 1991

DOI:https://doi.org/10.1103/PhysRevLett.68.1164

©1992 American Physical Society

Authors & Affiliations

C. T. Rettner, D. J. Auerbach, and H. A. Michelsen

  • IBM Research Division, Almaden Research Center, San Jose, California 95120-6099

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Vol. 68, Iss. 8 — 24 February 1992

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