Measurements of wave-particle interaction in a single-ended Q machine

S.A. Andersen, G.B. Christoffersen, Vagn Orla Jensen, Poul Michelsen, P. Nielsen

    Research output: Contribution to journalJournal articleResearchpeer-review


    A Green-function technique is used to solve the linearized Vlasov equation for the perturbed ion velocity distribution function, f( x,v,t), in a case where a short density pulse is released into a plasma. Some characteristic features in the calculated curves are caused by wave-particle interaction. Experimentally, short density pulses are generated in the plasma in a single-ended Q machine by application of electrical square pulses to a grid immersed in the plasma column. The perturbed ion velocity distribution function in the density pulse is measured by means of an electrostatic energy analyzer. The features showing the wave-particle interaction appear in the experimental results
    Original languageEnglish
    JournalPhysics of Fluids
    Issue number5
    Pages (from-to)990-998
    Publication statusPublished - 1971


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