Reflection of hydrogen atoms from the surface of superfluid helium

E. Tiesinga, H.T.C. Stoof, B.J. Verhaar

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    Abstract

    We propose a new method for studying the reflection of a hydrogen atom from a superfluid-helium film. Starting from the narrow width of the reflected angular distribution recently found experimentally, we tentatively extrapolate to the extreme limit of low ripplon wave numbers in which the adiabatic or degenerate-internal-states approximation becomes valid. We obtain simple closed expressions for single- and multiple-ripplon processes, which do not require the integration of a Schrödinger equation for their evaluation and do not depend on the specific form of the potential.
    Original languageEnglish
    Pages (from-to)8886-8890
    Number of pages5
    JournalPhysical Review B: Condensed Matter
    Volume41
    Issue number13
    DOIs
    Publication statusPublished - 1990

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