Atom scattering from isolated molecular adsorbates on surfaces: Effects of adsorbate orientation

G. Petrella*, A. T. Yinnon, R. B. Gerber

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The scattering of He atoms from O2 molecules adsorbed on a flat surface is studied, and comparison is made of models in which the O2 is respectively perpendicular and parallel to the surface. The sudden approximation is used to calculate both the angular intensity distribution of the scattered atoms at fixed incidence energy, and the integral cross section for scattering by the adsorbate as a function of collision energy. Significant differences are found in both the cross sections and the angular intensities between scattering by the parallel and by the perpendicular adsorbate. The possible use of He scattering to study adsorbate orientation is discussed in the light of the results.

Original languageEnglish
Pages (from-to)250-256
Number of pages7
JournalChemical Physics Letters
Volume158
Issue number3-4
DOIs
StatePublished - 9 Jun 1989

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