Weakly nonlinear electron plasma waves in collisional plasmas

H. L. Pecseli, J. Juul Rasmussen, S. G. Tagare, K. Thomsen

    Research output: Contribution to journalJournal articleResearchpeer-review


    The nonlinear evolution of a high frequency plasma wave in a weakly magnetized, collisional plasma is considered. In addition to the ponderomotive-force-nonlinearity the nonlinearity due to the heating of the electrons is taken into account. A set of nonlinear equations including the effect of a constantly maintained pump wave is derived and a general dispersion relation describing the modulation of the high frequency wave due to different low frequency responses is obtained. Particular attention is devoted to a purely growing modulation. The relative importance of the ponderomotive force nonlinearity and the thermal nonlinearity is discussed.
    Original languageEnglish
    JournalPlasma Physics and Controlled Fusion
    Issue number2
    Pages (from-to)485-507
    Publication statusPublished - 1986


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