Equipartition and transport in two-dimensional electrostatic turbulence

    Research output: Contribution to journalJournal articleResearch

    Abstract

    Turbulent equipartition is investigated for the nonlinear evolution of pressure driven flute modes of a plasma in an inhomogeneous magnetic field. The Rayleigh-Taylor instability is recovered by linear stability analysis, and occurs when the pressure profile is more peaked than the profile of the magnetic field. Numerical solutions of the model equations on a bounded domain with sources and sinks show that the flux-driven turbulent fluctuations give rise to up-gradient transport, a “pinch flux,” of heat or particles. The averaged equilibrium density and temperature profiles approach n∼B and T∼B2/3, as predicted by turbulent equipartition.

    © 1998 The American Physical Society
    Original languageEnglish
    JournalPhysical Review Letters
    Volume81
    Issue number19
    Pages (from-to)4148-4151
    ISSN0031-9007
    DOIs
    Publication statusPublished - 9 Nov 1998

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