Quantum dust-acoustic double layers

Journal Article · Sun Apr 15 04:00:00 EDT 2007 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2719633· OSTI ID:20974919

Moslem, W M; Shukla, P K; Ali, S; Schlickeiser, R ^[1]

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1. Institut fuer Theoretische Physik IV, Fakultaet fuer Physik und Astronomie, Ruhr-Universitaet Bochum, D-44780 Bochum (Germany)

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.

• OSTI ID: 20974919
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 4 Vol. 14; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

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