Drift wave turbulence in low-β plasmas

Torben Mikkelsen, Søren Ejling Larsen, Hans Pécseli

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Experimental investigations of strong turbulence associated with the radial density gradient of a rotating magnetized plasma column are reported. The experiment is designed to make Taylor's hypothesis effective, in order to allow a simple interpretation of measured frequency spectra in terms of wavenumber spectra. The spectral index of the turbulent potential fluctuations is determined and the variation of the spectral intensity is investigated for varying magnetic fields. The results compare favourably with theoretical predictions. The importance of distinguishing subranges in the turbulent spectrum is demonstrated. Some aspects of the relative diffusion of a test-cloud of charged particles released in the turbulent field are discussed.
    Original languageEnglish
    JournalPlasma Physics and Controlled Fusion
    Volume25
    Issue number11
    Pages (from-to)1173-1197
    ISSN0741-3335
    DOIs
    Publication statusPublished - 1983

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