Coupled gas acoustic and ion acoustic waves in weakly ionized plasma

J. Vranjes*, B. P. Pandey, S. Poedts

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

    Abstract

    Gas acoustic and ion acoustic modes are investigated in a collisional, weakly ionized plasma in the presence of un-magnetized ions and magnetized electrons. In such a plasma, an ion acoustic mode, driven by an electron flow along the magnetic field lines, can propagate almost at any angle with respect to the ambient field lines as, long as the electrons are capable of participating in the perturbations by moving only along the field lines. The electron-ion collisions are shown to modify the previously obtained angle dependent instability threshold for the driving electron flow. The inclusion of the neutral dynamics implies an additional neutral sound mode which couples to the current driven ion acoustic mode, and these two modes can interchange their identities in certain parameter regimes.

    Original languageEnglish
    Title of host publication24th summer school and international symposium on the physics of ionized gases, contributed papers
    EditorsG Malovic, LC Popovic, MS Dimitrijevic
    Place of PublicationSerbia
    PublisherAstronomical Observatory
    Pages507-510
    Number of pages4
    ISBN (Print)9788680019277
    Publication statusPublished - 2008
    Event24th Summer School and International Symposium on Physics of Ionized Gases - Novi Sad, Serbia
    Duration: 25 Aug 200829 Aug 2008

    Publication series

    NamePublications of the Astronomical Observatory of Belgrade Series
    PublisherASTRONOMICAL OBSERVATORY
    ISSN (Print)0373-3742

    Conference

    Conference24th Summer School and International Symposium on Physics of Ionized Gases
    Country/TerritorySerbia
    CityNovi Sad
    Period25/08/0829/08/08

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