Band effect on inelastic scattering of low-energy He+ from ionic crystals

R. Souda, T. Aizawa, C. Oshima, Y. Ishizawa

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    Inelastic scattering of He+ in the kinetic energy range 100 1000 eV from the surface of ionic compounds as well as metallic elements has been investigated. The inelastic He+ scattering at the surface of ionic crystals sometimes exceeds the elastic scattering even for kinetic energy below a few hundred eV. It can be ascribed to the excitation of surface valence electrons to the conduction band because of the interaction of the surface p-band with the He 1s orbital which is promoted in the quasimolecular state.

    Original languageEnglish
    Pages (from-to)2705-2708
    Number of pages4
    JournalPhysical Review Letters
    Issue number23
    Publication statusPublished - 1988


    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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