Influence of grain charge gradients on the dynamics of macroparticles in an electrostatic trap

An analytical model of anomalous heating of charged dust grains (macroparticles) caused by their stochastic motion in a bounded plasma volume is proposed. Analytical expressions allowing one to describe the pumping (heating) of interacting grains with additional stochastic energy due to grain charge...

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Bibliographic Details
Published inPlasma physics reports Vol. 43; no. 3; pp. 354 - 362
Main Author Vaulina, O. S.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.03.2017
Springer Nature B.V
Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Atomic
Computer simulation
COMPUTERIZED SIMULATION
Dust
DUSTS
Dusty Plasma
ELECTROSTATICS
Grains
HEATING
Macroparticles
Mathematical analysis
Mathematical models
Molecular
Optical and Plasma Physics
PARTICLES
Physics
Physics and Astronomy
PLASMA
Pumping
STOCHASTIC PROCESSES
TRAPPING
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Summary:An analytical model of anomalous heating of charged dust grains (macroparticles) caused by their stochastic motion in a bounded plasma volume is proposed. Analytical expressions allowing one to describe the pumping (heating) of interacting grains with additional stochastic energy due to grain charge gradients are derived. The analytical results are verified by numerical simulation of the problem. It is shown that spatial variations in the charges of dust grains can lead to their anomalous heating in laboratory plasma.
ISSN:1063-780X
1562-6938
DOI:10.1134/S1063780X17030163