Inelastic Neutron Scattering and Separation Coefficient of Absorbed Hydrogen: Molecular Alignment and Energy Levels

I. F. Silvera, Mourits Nielsen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Inelastic neutron scattering and measurement of the ortho-para separation coefficient have been used to study the low lying rotational states of molecular hydrogen adsorbed on activated alumina. The observations are consistent with a picture in which the orientational motion of the molecules is severely hindered. Results are analyzed in terms of two models: a two-dimensional rotor and an axially constrained rotor. The latter which is more consistent with the data serves to explain preferential adsorption of orthohydrogen.
    Original languageEnglish
    JournalPhysical Review Letters
    Volume37
    Issue number19
    Pages (from-to)1275-1278
    ISSN0031-9007
    DOIs
    Publication statusPublished - 1976

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