Nonlinear Evolution of the Ion-Ion Beam Instability

Hans Pécseli, J. Trulsen

    Research output: Contribution to journalJournal articleResearchpeer-review


    The criterion for the existence of vortexlike ion phase-space configurations, as obtained by a standard pseudopotential method, is found to coincide with the criterion for the linear instability for two (cold) counterstreaming ion beams. A nonlinear equation is derived, which demonstrates that this instability actually evolves into such phase-space configurations. A small, but nonzero, ion-temperature turns out to be essential for the saturation into stationary structures
    Original languageEnglish
    JournalPhysical Review Letters
    Issue number19
    Pages (from-to)1355-1358
    Publication statusPublished - 1982

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