Dissociative attachment and surface reactions induced by low-energy electrons

DOI PDF 被引用文献1件
  • Léon Sanche
    MRC Group in the Radiation Sciences, University of Sherbrooke, Quebec J1H 5N4, Canada

書誌事項

公開日
1992-01-01
DOI
  • 10.1116/1.586299
公開者
American Vacuum Society

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説明

<jats:p>The mechanisms leading to anion electron stimulated desorption (ESD) at low energies (0–20 eV) are discussed with emphasis on the formation of transitory anions at surfaces decaying by dissociative attachment (DA). The results of recent measurements are summarized and briefly explained using as examples data on O− ESD from O2 condensed on Pt and H−, CH−, and CH−2 desorption from hydrocarbons also physisorbed on Pt. It is shown that, when O2 and hydrocarbons are coadsorbed on Pt, O− ions formed by DA can undergo reactive scattering with other surface molecules; this reaction leads to the product OH− some of which desorb from the surface.</jats:p>

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