Particle in cell calculation of plasma force on a small grain in a non-uniform collisional sheath
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Hutchinson_Particle in.pdf
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1.24 MB
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Adobe PDF
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ef862d2579651f5d9fa37fd99101df61
Author(s)
Hutchinson, Ian Horner
Date Issued
October 2013
Journal
Plasma Physics and Controlled Fusion
Publisher
IOP Publishing
Citation
Hutchinson, I H. “Particle in Cell Calculation of Plasma Force on a Small Grain in a Non-Uniform Collisional Sheath.” Plasma Physics and Controlled Fusion 55, no. 11 (October 18, 2013): 115014.
Version
Original manuscript
Abstract
The plasma force on grains of specified charge and height in a collisional DC plasma sheath is calculated using the multidimensional particle in cell code COPTIC. The background ion velocity distribution functions for the unperturbed sheath vary substantially with collisionality. The grain force is found to agree quite well with a combination of background electric-field force plus ion drag force. However, the drag force must take account of the non-Maxwellian (and spatially varying) ion distribution function, and the collisional drag enhancement. It is shown how to translate the dimensionless results into practical equilibrium including other forces such as gravity.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Plasma Science and Fusion Center
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1088/0741-3335/55/11/115014
