Intramolecular motion during stimulated surface processes

A. R. Burns, D. R. Jennison, E. B. 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
Pages (from-to)3895-3898
Number of pages4
JournalPhysical review letters
Volume72
Issue number24
DOIs
Publication statusPublished - 1994

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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