Electrostatic shock structures in dissipative multi-ion dusty plasmas

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    • I.S Elkamash
    • Ioannis Kourakis

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    A comprehensive analytical model is introduced for shock excitations in dusty bi-ion plasma mixtures,taking into account collisionality and kinematic (fluid) viscosity. A multicomponent plasma configuration is considered, consisting of positive ions, negative ions, electrons, and a massive charged component in the background (dust). The ionic dynamical scale is focused upon; thus,electrons are assumed to be thermalized, while the dust is stationary. A dissipative hybrid Korteweg–de Vries/Burgers equation is derived. An analytical solution is obtained, in the form of a shock structure (a step-shaped function for the electrostatic potential, or an electric field pulse)whose maximum amplitude in the far downstream region decays in time. The effect of relevant plasma configuration parameters, in addition to dissipation, is investigated. Our work extends earlier studies of ion-acoustic type shock waves in pure (two-component) bi-ion plasma mixtures.

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    Original languageEnglish
    Article number062104
    Pages (from-to)1-11
    JournalPhysics of Plasmas
    Journal publication date01 Jun 2018
    Issue number6
    Volume25
    DOIs
    Publication statusPublished - 01 Jun 2018

    ID: 153516112