Level-crossing spectroscopy with an electric field: Stark shift of the 3P2 term in lithium

B. Budick, S. Marcus, R. Novick

    Research output: Contribution to journalArticle

    Abstract

    The method of level-crossing spectroscopy has been extended to a study of the Stark effect on the 3P term of lithium. Lithium atoms in a broad atomic beam are subjected to collinear electric and magnetic fields. The field values required to produce a level crossing or degeneracy are determined by observing the change in the angular distribution of the fluorescence resulting from the optical excitation of the 3P term. The magnetic field required to produce the crossing is found to shift to higher values as the electric field is applied. The shift increases as the square of the electric field and is given by ΔH=+0.056(11)E2, where ΔH is in gauss and E is in kilovolts per centimeter. The coefficient is in good agreement with the value 0.048 obtained from second-order perturbation theory and the Bates and Damgaard approximation.

    Original languageEnglish (US)
    JournalPhysical Review
    Volume140
    Issue number4A
    DOIs
    StatePublished - 1965

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    lithium
    electric fields
    shift
    spectroscopy
    atomic beams
    Stark effect
    magnetic fields
    angular distribution
    perturbation theory
    fluorescence
    coefficients
    approximation
    excitation
    atoms

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Level-crossing spectroscopy with an electric field : Stark shift of the 3P2 term in lithium. / Budick, B.; Marcus, S.; Novick, R.

    In: Physical Review, Vol. 140, No. 4A, 1965.

    Research output: Contribution to journalArticle

    Budick, B. ; Marcus, S. ; Novick, R. / Level-crossing spectroscopy with an electric field : Stark shift of the 3P2 term in lithium. In: Physical Review. 1965 ; Vol. 140, No. 4A.
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