DNLS solitons in collisional dusty plasma

Birendra P. Pandey, Sergey V. Vladimirov, Alex A. Samarian

    Research output: Contribution to journalConference paperpeer-review

    Abstract

    Alfven waves are possible sources of turbulence in the interstellar medium. These waves are responsible for the transport of angular momentum and energy in the accretion discs. Such waves have been studied for last several decades in space plasmas. Most of the space plasmas are dusty. They contain charged grains and coupling of the grains to the magnetic field determines the wave propagation in the planetary and interstellar medium. In the present work, the nonlinear wave propagation in collisonal dusty plasma is considered. When the electrons and ions are highly magnetized and charged dust remains weakly magnetized, the relative drift between the dust and the plasma particles may significantly modify the wave characteristics in such a medium. It is shown that the collisonal dusty medium is inherently dispersive in nature and the balance between the dispersion and nonlinearity leads to derivative nonlinear Schrödinger (DNLS) equation. The relative drift between the charged grains and the plasma particles (electrons and ions) gives rise to the Hall diffusion in the medium. This Hall diffusion causes the wave dispersion. In many dusty plasma situations, Hall MHD is the only proper description of the plasma dynamics.
    Original languageEnglish
    Pages (from-to)305-307
    Number of pages3
    JournalJournal of plasma and fusion research series : proceedings of the 14th International Congress on Plasma Physics (ICPP2008) September 8-12, 2008, Fukuoka, Japan
    Volume8
    Publication statusPublished - 2009
    EventInternational Congress on Plasma Physics (14th : 2008) - Fukaoka, Japan
    Duration: 8 Sep 200812 Sep 2008

    Keywords

    • Magnetized dusty plasma
    • plasma waves
    • nonlinear waves
    • DNLS equation
    • collision effects

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