Influence of dust-particle concentration on gas-discharge plasma

Journal Article · Fri Jan 15 00:00:00 EST 2010 · Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print)

DOI:https://doi.org/10.1103/PHYSREVE.81.016402· OSTI ID:21347289

Sukhinin, G I ^[1]; Fedoseev, A V ^[1]

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1. Institute of Thermophysics SB RAS, Lavrentyev Avenue 1, Novosibirsk 630090 (Russian Federation)

A self-consistent kinetic model of a low-pressure dc glow discharge with dust particles based on Boltzmann equation for the electron energy distribution function is presented. The ions and electrons production in ionizing processes as well as their recombination on the dust-particle surface and on the discharge tube wall were taken into account. The influence of dust-particle concentration N{sub d} on gas discharge and dust particles parameters was investigated. It is shown that the increase of N{sub d} leads to the increase of an averaged electric field and ion density, and to the decrease of a dust-particle charge and electron density in the dusty cloud. The results were obtained in a wide region of different discharge and dusty plasma parameters: dust particles density 10{sup 2}-10{sup 8} cm{sup -3}, discharge current density 10{sup -1}-10{sup 1} mA/cm{sup 2}, and dust particles radius 1, 2, and 5 mum. The scaling laws for dust-particle surface potential and electric filed dependencies on dust-particle density, particle radius and discharge currents were revealed. It is shown that the absorption of electrons and ions on the dust particles surface does not lead to the electron energy distribution function depletion due to a self-consistent adjustment of dust particles and discharge parameters.

• OSTI ID: 21347289
• Journal Information: Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print), Vol. 81, Issue 1; Other Information: DOI: 10.1103/PhysRevE.81.016402; (c) 2010 The American Physical Society; ISSN 1539-3755
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
BOLTZMANN EQUATION
CURRENT DENSITY
DUSTS
ELECTRIC FIELDS
ELECTRON DENSITY
ELECTRONS
ENERGY SPECTRA
FUNCTIONS
GLOW DISCHARGES
ION DENSITY
IONS
PLASMA
RECOMBINATION
SCALING LAWS
SURFACE POTENTIAL
CHARGED PARTICLES
DIFFERENTIAL EQUATIONS
ELECTRIC DISCHARGES
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
INTEGRO-DIFFERENTIAL EQUATIONS
KINETIC EQUATIONS
LEPTONS
PARTIAL DIFFERENTIAL EQUATIONS
POTENTIALS
SORPTION
SPECTRA