The Bohm criterion for a dusty plasma sheath

B. P. Pandey, Anjan Dutta*

*Corresponding author for this work

Research output: Contribution to journalArticle

6 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)117-124
Number of pages8
JournalPramana - Journal of Physics
Volume65
Issue number1
Publication statusPublished - Jul 2005
Externally publishedYes

Keywords

  • Bohm criteria
  • Dusty plasma
  • Plasma sheath

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