Influence of grain charge gradients on the dynamics of macroparticles in an electrostatic trap
- Authors: Vaulina O.S.1
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Affiliations:
- Joint Institute for High Temperatures
- Issue: Vol 43, No 3 (2017)
- Pages: 354-362
- Section: Dusty Plasma
- URL: https://journals.rcsi.science/1063-780X/article/view/186534
- DOI: https://doi.org/10.1134/S1063780X17030163
- ID: 186534
Cite item
Abstract
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.
About the authors
O. S. Vaulina
Joint Institute for High Temperatures
Author for correspondence.
Email: olga.vaulina@bk.ru
Russian Federation, Moscow, 125412