Behavior of a dust grain in the double layer of an electric probe in a gas-discharge plasma

Citation
Sn. Antipov et al., Behavior of a dust grain in the double layer of an electric probe in a gas-discharge plasma, PLAS PHYS R, 27(4), 2001, pp. 340-346
Citations number
14
Categorie Soggetti
Physics
Journal title
PLASMA PHYSICS REPORTS
ISSN journal
1063780X → ACNP
Volume
27
Issue
4
Year of publication
2001
Pages
340 - 346
Database
ISI
SICI code
1063-780X(200104)27:4<340:BOADGI>2.0.ZU;2-W
Abstract
Equations for the motion of an individual dust grain in the double layer of a negatively charged cylindrical probe in a glow discharge plasma are deri ved and solved numerically. The distribution of the electric potential near the probe is determined, and the grain charge is calculated as a function of the distance from the probe for different probe potentials. Tile traject ories of grains with different initial energies are traced. An analysis of the gl-ain trajectories shows that, at a certain distance from the probe, h igh-energy grains may be recharged; i.e., the grain charge may change sign. The grains are found to have no direct effect on the probe current in a du sty plasma of a glow discharge. (C) 2001 MAIK "Nauka/Interperiodica".