Instability of dusty particle system in gas-discharge plasma

Journal Article · Mon Oct 31 04:00:00 EST 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2134649· OSTI ID:20726799

Filinov, V S; Petrov, O F; Fortov, V E; Molotkov, V I ^[1]; Khakhaev, A D; Podrjadchikov, S F ^[2]

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1. Institute for High Energy Densities, Izhorskaya 13/19, 125412 Moscow (Russian Federation)
2. Petrozavodsk state university NOZ 'Plasma', Lenin street 33, Petrozavodsk 185640 (Russian Federation)

An effective anisotropic potential is proposed for the interaction between dust particles in a gas-discharge plasma. In addition to the Coulomb repulsion this potential takes into account attraction due to the spatial positive plasma charge originating from focusing of the ionic fluxes by dusty particles. The time evolution of the dust particle kinetic and potential energies from random initial configurations have been investigated by the Brownian dynamics method. Results of our simulation showed that the attraction between dusty particles can be the main physical reason of formation and decay of classical bound dust particle pairs and many particle complexes with low potential energy, while the kinetic energy (temperature) of unbound dust particles and particle oscillating in bound complexes may increase on three order as observed in experiments.

• OSTI ID: 20726799
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 799; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANISOTROPY
BROWNIAN MOVEMENT
COMPLEXES
COULOMB FIELD
DUSTS
ELECTRIC DISCHARGES
EVOLUTION
KINETIC ENERGY
PARTICLES
PLASMA
PLASMA INSTABILITY
POTENTIAL ENERGY
POTENTIALS
RANDOMNESS
SIMULATION