Ion-Acoustic Instability in the Presence of High Frequency Oscillations

Jens Juul Rasmussen, D. Sandu, R. Schrittwieser

    Research output: Contribution to journalJournal articleResearchpeer-review


    Measurements are presented of a standing ion-acoustic wave instability, which is excited by a positively biased grid inserted perpendicularly into the plasma column of a single-ended Q-machine, under the influence of a high frequency signal superimposed onto the positive voltage at the grid. The experimental results show that in certain regions of the frequency and amplitude of the h.f. signal the ion wave instability is stabilized or destabilized. A possible explanation of these effects is presented.
    Original languageEnglish
    JournalPlasma Physics and Controlled Fusion
    Issue number12
    Pages (from-to)1139-1144
    Publication statusPublished - 1977


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