Intramolecular motion during stimulated surface processes

A. R. Burns, D. R. Jennison, Ellen Stechel, Y. S. Li

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

Ammonia and deuterated ammonia exhibit an anomalously large isotope effect in their relative yields and rotational spinning energy for electron-stimulated desorption from Pt(111). Quantum-resolved desorption measurements and ab initio, two-dimensional, potential energy calculations suggest that the desorbate undergoes a geometry change (molecular inversion) induced by the excited state. Inverted molecules deexcite to a repulsive hard wall potential and desorb. In general, multidimensional potential energy surfaces determine the dynamics of stimulated surface processes.

Original languageEnglish (US)
Pages (from-to)3895-3898
Number of pages4
JournalPhysical Review Letters
Volume72
Issue number24
DOIs
StatePublished - 1994
Externally publishedYes

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ammonia
desorption
potential energy
isotope effect
metal spinning
inversions
geometry
excitation
molecules
electrons
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Intramolecular motion during stimulated surface processes. / Burns, A. R.; Jennison, D. R.; Stechel, Ellen; Li, Y. S.

In: Physical Review Letters, Vol. 72, No. 24, 1994, p. 3895-3898.

Research output: Contribution to journalArticle

Burns, A. R. ; Jennison, D. R. ; Stechel, Ellen ; Li, Y. S. / Intramolecular motion during stimulated surface processes. In: Physical Review Letters. 1994 ; Vol. 72, No. 24. pp. 3895-3898.
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