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Title: Quantum dust-acoustic double layers

Abstract

The quantum dust-acoustic double layers (QDADLs) are studied in an unmagnetized, collisionless quantum dusty plasma whose constituents are the electrons, ions, and negatively/positively charged dust particles. By employing the quantum hydrodynamical equations and the reductive perturbation technique, a quantum extended Korteweg-de Vries equation is derived. A steady-state double-layer solution of the latter is presented by taking into account the quantum-mechanical effects. It is numerically found that both compressive and rarefactive QDADLs can exist only for positive charged dust particles under the condition n{sub i0}/n{sub e0}<1, where n{sub i0}(n{sub e0}) is the unperturbed number density of the ions (electrons). It is further noted that the formation of the compressive and the rarefactive double layers depends on the quantum plasma parameters. The relevance of the present investigation to the dust charge impurities in laser-solid interactions is discussed. In general, this study should be useful for the diagnostics of charged dust impurities in ultrasmall microelectronic and nanoelectronic components, as well as in astrophysical objects where charged dust particles are inherently present.

Authors:
; ; ;  [1]
  1. Institut fuer Theoretische Physik IV, Fakultaet fuer Physik und Astronomie, Ruhr-Universitaet Bochum, D-44780 Bochum (Germany)
Publication Date:
OSTI Identifier:
20974919
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 14; Journal Issue: 4; Other Information: DOI: 10.1063/1.2719633; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; DENSITY; DUSTS; ELECTRONS; INTERACTIONS; IONS; KORTEWEG-DE VRIES EQUATION; LASERS; LAYERS; PARTICLES; PERTURBATION THEORY; PLASMA DENSITY; PLASMA IMPURITIES; PLASMA SHEATH; QUANTUM MECHANICS; QUANTUM PLASMA

Citation Formats

Moslem, W. M., Shukla, P. K., Ali, S., and Schlickeiser, R.. Quantum dust-acoustic double layers. United States: N. p., 2007. Web. doi:10.1063/1.2719633.
Moslem, W. M., Shukla, P. K., Ali, S., & Schlickeiser, R.. Quantum dust-acoustic double layers. United States. doi:10.1063/1.2719633.
Moslem, W. M., Shukla, P. K., Ali, S., and Schlickeiser, R.. Sun . "Quantum dust-acoustic double layers". United States. doi:10.1063/1.2719633.
@article{osti_20974919,
title = {Quantum dust-acoustic double layers},
author = {Moslem, W. M. and Shukla, P. K. and Ali, S. and Schlickeiser, R.},
abstractNote = {The quantum dust-acoustic double layers (QDADLs) are studied in an unmagnetized, collisionless quantum dusty plasma whose constituents are the electrons, ions, and negatively/positively charged dust particles. By employing the quantum hydrodynamical equations and the reductive perturbation technique, a quantum extended Korteweg-de Vries equation is derived. A steady-state double-layer solution of the latter is presented by taking into account the quantum-mechanical effects. It is numerically found that both compressive and rarefactive QDADLs can exist only for positive charged dust particles under the condition n{sub i0}/n{sub e0}<1, where n{sub i0}(n{sub e0}) is the unperturbed number density of the ions (electrons). It is further noted that the formation of the compressive and the rarefactive double layers depends on the quantum plasma parameters. The relevance of the present investigation to the dust charge impurities in laser-solid interactions is discussed. In general, this study should be useful for the diagnostics of charged dust impurities in ultrasmall microelectronic and nanoelectronic components, as well as in astrophysical objects where charged dust particles are inherently present.},
doi = {10.1063/1.2719633},
journal = {Physics of Plasmas},
number = 4,
volume = 14,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}