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Desorption by Resonant Multiphoton Excitation of Internal Adsorbate Vibration

  • J. Heidberg
  • H. Stein
  • E. Riehl

Abstract

Infrared laser induced desorption by resonant excitation of internal adsorbate vibration is demonstrated. Fast desorption takes place at low fluences D < 0.1 J cm−2 by multiphoton absorption from TEA CO2 laser pulses in CH3F-NaCl. Desorption yield versus excitation frequency and Φ versus fluence plots as well as linear absorption spectra are presented. Considering localized and nonlocalized excitation a model of unimolecular desorption induced by monochromatic infrared is presented and found to be in concert with first experiments. The apparatus with the ultra high vacuum cryostat developed is described briefly.

Keywords

Vibrational Excitation Resonant Excitation Constant Coverage Infrared Pulse Linear Absorption Spectrum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • J. Heidberg
    • 1
  • H. Stein
    • 1
  • E. Riehl
    • 1
  1. 1.Institut für Physikalische und Theoretische ChemieUniversität Erlangen-NürnbergErlangenFR Germany

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