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Proceedings Paper

Particle-in-cell/Monte Carlo simulation of dusty plasmas near spacecraft surfaces
Author(s): Robert E. Erlandson; N. A. Gatsonis
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Paper Abstract

The electrodynamics of particulate contamination in an ionospheric plasma near spacecraft surfaces is being investigated by a new 2D particle-in-cell (PIC) simulation. Particulate charging in the PIC simulation is treated as a collisional event and is implemented in a Monte Carlo fashion. The simulation has been applied to dusty plasmas both in an unbounded plasma and near a bounded plasma (spacecraft surface). Results from the simulation include estimates of the charge and potential structure of finite-size dust clouds. Low-density dust clouds do not perturb the electric potential of the plasma, similar to the case for isolated particulates. In high-density dust clouds, the potential forms a sheath-like structure while the charge forms a double layer on the outer boundary of the cloud. Particulates can have negative or positive charges depending on the applied surface potential, thus raising the possibility of controlling particulate contamination by controlling the spacecraft potential.

Paper Details

Date Published: 19 October 1994
PDF: 9 pages
Proc. SPIE 2261, Optical System Contamination: Effects, Measurements, and Control IV, (19 October 1994); doi: 10.1117/12.190133
Show Author Affiliations
Robert E. Erlandson, Johns Hopkins Univ. (United States)
N. A. Gatsonis, Johns Hopkins Univ. (United States)

Published in SPIE Proceedings Vol. 2261:
Optical System Contamination: Effects, Measurements, and Control IV
A. Peter M. Glassford, Editor(s)

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