Kinetic model for the collisionless sheath of a collisional plasma
Abstract
Collisional plasmas typically have mean-free-path still much greater than the Debye length, so the sheath is mostly collisionless. Once the plasma density, temperature, and flow are specified at the sheath entrance, the profile variation of electron and ion density, temperature, flow speed, and conductive heat fluxes inside the sheath is set by collisionless dynamics, and can be predicted by an analytical kinetic model distribution. Finally, these predictions are contrasted in this paper with direct kinetic simulations, showing good agreement.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1409762
- Alternate Identifier(s):
- OSTI ID: 1282419
- Report Number(s):
- LA-UR-16-21847
Journal ID: ISSN 1070-664X
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 23; Journal Issue: 8; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; plasma sheaths; plasma temperature; plasma flows; collision theories; heat conduction
Citation Formats
Tang, Xian-Zhu, and Guo, Zehua. Kinetic model for the collisionless sheath of a collisional plasma. United States: N. p., 2016.
Web. doi:10.1063/1.4960321.
Tang, Xian-Zhu, & Guo, Zehua. Kinetic model for the collisionless sheath of a collisional plasma. United States. https://doi.org/10.1063/1.4960321
Tang, Xian-Zhu, and Guo, Zehua. Thu .
"Kinetic model for the collisionless sheath of a collisional plasma". United States. https://doi.org/10.1063/1.4960321. https://www.osti.gov/servlets/purl/1409762.
@article{osti_1409762,
title = {Kinetic model for the collisionless sheath of a collisional plasma},
author = {Tang, Xian-Zhu and Guo, Zehua},
abstractNote = {Collisional plasmas typically have mean-free-path still much greater than the Debye length, so the sheath is mostly collisionless. Once the plasma density, temperature, and flow are specified at the sheath entrance, the profile variation of electron and ion density, temperature, flow speed, and conductive heat fluxes inside the sheath is set by collisionless dynamics, and can be predicted by an analytical kinetic model distribution. Finally, these predictions are contrasted in this paper with direct kinetic simulations, showing good agreement.},
doi = {10.1063/1.4960321},
journal = {Physics of Plasmas},
number = 8,
volume = 23,
place = {United States},
year = {Thu Aug 04 00:00:00 EDT 2016},
month = {Thu Aug 04 00:00:00 EDT 2016}
}
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Works referencing / citing this record:
Critical role of electron heat flux on Bohm criterion
journal, December 2016
- Tang, Xian-Zhu; Guo, Zehua
- Physics of Plasmas, Vol. 23, Issue 12
Modeling and simulations of plasma and sheath edges in warm-ion collision-free discharges
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Sheath formation in collisional, low pressure, and magnetized plasma
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3D numerical investigation of a free-burning argon arc with metal electrodes using a novel sheath coupling procedure
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- Plasma Sources Science and Technology, Vol. 28, Issue 11
Analytic solution for a joint Bohm sheath and pre-sheath potential profile
journal, November 2019
- Martin, P.; Maass, F.; Calderón, F. A.
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