STP1028

    Layer-Dependent Laser Sputtering of BaF2 (111)

    Published: Jan 1988


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    Abstract

    Laser-induced sputtering from the (111) surface of BaF2 was investigated under ultrahigh vacuum conditions, applying fluences well below the macroscopic damage threshold. Measurement of the wavelength dependent desorption of Ba+ indicates that Ba+ is emitted from two chemically different surroundings at the surface. For a fixed wavelength, the emission rate of Ba+ and F+ as functions of time show a distinct anticorrelation, confirming the existence of two different chemical states of the surface, and suggesting that the sputtering takes place layer by layer.

    Keywords:

    chemical state of film surfaces, laser induced sputtering, ultrahigh vacuum


    Author Information:

    Reif, J
    Institut fur Atom und Festkorperphysik Freie Universitat Berlin, Berlin 33,

    Fallgren, H
    Institut fur Atom und Festkorperphysik Freie Universitat Berlin, Berlin 33,

    Nielsen, HB
    Institut fur Atom und Festkorperphysik Freie Universitat Berlin, Berlin 33,

    Matthias, E
    Institut fur Atom und Festkorperphysik Freie Universitat Berlin, Berlin 33,


    Paper ID: STP18588S

    Committee/Subcommittee: F01.10

    DOI: 10.1520/STP18588S


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