Vibrational relaxation at surfaces

Richard R. Cavanagh; J. D. Beckerle; Michael P. Casassa; Edwin J. Heilweil; John C. Stephenson

doi:10.1117/12.17893

1 April 1990 Vibrational relaxation at surfaces

Richard R. Cavanagh, J. D. Beckerle, Michael P. Casassa, Edwin J. Heilweil, John C. Stephenson

Proceedings Volume 1209, Picosecond and Femtosecond Spectroscopy from Laboratory to Real World; (1990) https://doi.org/10.1117/12.17893
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

Time-resolved techniques are applied to issues of vibrational energy transfer at surfaces. Primary attention is given to the relaxation of vibrationally excited diatomic adsorbates on metals. The sensitivity of the vibrational decay rate to the number of metal atoms in the solid is demonstrated. Preliminary results for the transient response of CO on Pt(111) are also reported. This latter measurement demonstrates the recently developed capability of monitoring adsorbate energy transfer processes at well defined surface sites. The observations appear to be consistent with relaxation through the excitation of electron/hole pairs in the substrate.

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Richard R. Cavanagh, J. D. Beckerle, Michael P. Casassa, Edwin J. Heilweil, and John C. Stephenson "Vibrational relaxation at surfaces", Proc. SPIE 1209, Picosecond and Femtosecond Spectroscopy from Laboratory to Real World, (1 April 1990); https://doi.org/10.1117/12.17893

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