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Chemisorption of halogens on silver a critical comparison of results from photqemission and thermal desorption spectroscopy

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Abstract

Conflicting thermal desorption (TDS) results from submonolayer coverages of atomic Cl, Br or I on Ag(100), Ag(110) or Ag(111) stimulated us to check for the possible influence of different sample preparation procedures. We present experimental evidence, that a combined approach using TDS and angle-resolved ultraviolet photoemission may help to distinguish between “better” and “worse” surface preparation. We present detailed new results for the Cl/Ag(110) system. From our observations we conclude that all three halogens listed above give one and only one TDS peak in the submonolayer regime and show very similar adsorption/desorption-characteristics. This fact removes the apparent contradictions reported in the literature and demonstrates that the halogen-Ag bond is not very sensitive to the surface crystallography.

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Author notes

  1. H. Hinzert

    Present address: Flachglas AG, D-5810, Witten, Ruhr, FR Germany

  2. K. K. Kleinherbers

    Present address: Hoechst AG, Werk Ruhrchemie, D-4200, Oberhausen, FR Germany

Authors and Affiliations

  1. Laboratorium für Festkörperphysik, Universität, D-4100, Duisburg, Fed. Rep. Germany

    H. Hinzert & K. K. Kleinherbers

  2. Fachbereich Physik, Universität, D-3500, Kassel, Fed. Rep. Germany

    E. Janssen & A. Goldmann

Authors
  1. H. Hinzert
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  2. K. K. Kleinherbers
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  3. E. Janssen
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  4. A. Goldmann
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Hinzert, H., Kleinherbers, K.K., Janssen, E. et al. Chemisorption of halogens on silver a critical comparison of results from photqemission and thermal desorption spectroscopy. Appl. Phys. A 49, 313–320 (1989). https://doi.org/10.1007/BF00616860

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  • DOI: https://doi.org/10.1007/BF00616860

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