The Current-Driven, Ion-Acoustic Instability in a Collisionless Plasma

Poul Michelsen, Hans Pécseli, Jens Juul Rasmussen, R. Schrittwieser

    Research output: Contribution to journalJournal articleResearchpeer-review


    The current-driven, ion-acoustic instability was investigated by means of an experiment performed in a collisionless plasma produced in a single-ended Q-machine. Reflections at the ends of the plasma column gave rise to a standing wave. Parameters of the instability were investigated, and it was demonstrated that the fluctuations in the plasma column behave as a classical Van der Pol oscillator. Accurate measurements of the growth rate of the instability can be performed by making explicit use of the particular properties of such a system.
    Original languageEnglish
    JournalPlasma Physics and Controlled Fusion
    Issue number1
    Pages (from-to)61-73
    Publication statusPublished - 1979


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