Investigation Of The Dust Particles Trapping In Electrostatic Sheaths Of Plasma Discharge

Journal Article · Tue Sep 23 00:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2999954· OSTI ID:21251405

Tahraoui,; Zaham, B ^[1]; Annou, R ^[2]; Bougdira, J; Hugon, R ^[3]

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1. Laboratoire d'Electronique Quantique, Faculte de Physique, U. S. T. H. B., BP 32, El Alia, Bab Ezzouar 16111 (Algeria)
2. Laboratoire de Physique Theorique, Faculte de Physique, U. S. T. H. B., BP 32, El Alia, Bab Ezzouar 16111 (Algeria)
3. Laboratoire de Physique des Milieux Ionises et Applications, UMR CNRS 7040 BP 239 54506 Vandoeuvres Les Nancy, Cedex (France)

In this work, a 1D steady state model to study the dynamics along with trapping of dust grains in a plasma sheath over the lower electrode in a plasma reactor, is proposed. Electron and negative ions density distributions are taken Boltzmannian whereas positive ions are described by a cold fluid model. Numerous forces acting on dust grains are taken into account, viz, electric force, gravity force, ion drag force, neutral drag force, etc. It is found that trapping is grain size dependent, and it affects only negatively charged grains. The trapping position is determined and the physical parameters controlling the later are discussed.

• OSTI ID: 21251405
• Journal Information: AIP Conference Proceedings, Vol. 1047, Issue 1; Conference: LAPAMS'08: 1. international conference on laser plasma applications in materials science, Algiers (Algeria), 23-26 Jun 2008; Other Information: DOI: 10.1063/1.2999954; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANIONS
CATIONS
DUSTS
ELECTRON DENSITY
ELECTRONS
GRAIN SIZE
GRAVITATION
ION DENSITY
PLASMA
PLASMA IMPURITIES
PLASMA SHEATH
STEADY-STATE CONDITIONS
TRAPPING