Laser-induced thermal desorption of CO on Ni(111): Determination of pre-exponential factor and heat of desorption

X. D. Zhu, Th Rasing, Y. R. Shen

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

We show that by combining laser-induced thermal desorption with conventional thermal desorption spectroscopy, one can determine separately the activation energy Ed and the pre-exponential factor ν for desorption with good accuracy. Results on CO on Ni(111) yield Ed≈ 25.5 kcal/mol and ν≈ 1013/s. They agree well with values obtained by other techniques and suggest that above room temperature, CO on Ni(111) is in a highly mobile gas-like phase.

Original languageEnglish (US)
Pages (from-to)459-462
Number of pages4
JournalChemical Physics Letters
Volume155
Issue number4-5
DOIs
StatePublished - Mar 10 1989

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces

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