Desorption by electronically stimulated adsorbate rotation

A. R. Burns, Ellen Stechel, D. R. Jennison

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Abstract

Time-of-flight laser resonance ionization is used to measure state-selective translational energies of neutral NO, CO, and metastable CO (a3 ) desorbed from Pt(111) upon electron impact. A novel and dominant NO channel has a threshold of 1/46 eV and a peak translational energy of 0.05 eV. Lifetime calculations reveal a long-lived simple excitation (5-1). Dynamical calculations reproduce translational and rotational energy distributions and suggest that the excitation frees the hindered rotation of NO.

Original languageEnglish
Pages (from-to)250-253
Number of pages4
JournalPhysical Review Letters
Volume58
Issue number3
DOIs
Publication statusPublished - 1987

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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