• The Bohm criterion for a dusty plasma sheath

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      https://www.ias.ac.in/article/fulltext/pram/065/01/0117-0124

    • Keywords

       

      Dusty plasma; Bohm criteria; plasma sheath

    • Abstract

       

      The formation of the sheath in a dusty plasma is investigated. The Bohm criterion is derived for two different cases: (a) when electrons are in thermodynamic equilibrium and dust grains provide the immobile, stationary background and (b) when both electrons and ions are in thermodynamic equilibrium and dust grains are moving. In the first case, Bohm criterion gets modified due to the fluctuation of the charge on the grain surface. In the second case, the collisional and Coulombic drag play important role in determining the Bohm criterion.

    • Author Affiliations

       

      B P Pandey1 Anjan Dutta2

      1. New York State University at Buffalo, New York - 14214, USA
      2. Department of Physics and Astrophysics, University of Delhi, Delhi - 110 007, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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