Kinetic model for the collisionless sheath of a collisional plasma

Tang, Xian-Zhu; Guo, Zehua

doi:10.1063/1.4960321

Title: Kinetic model for the collisionless sheath of a collisional plasma

Journal Article · Thu Aug 04 00:00:00 EDT 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4960321· OSTI ID:1409762

Tang, Xian-Zhu ^[1]; Guo, Zehua ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

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.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: 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)

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1409762

Alternate ID(s):: OSTI ID: 1282419

Report Number(s):: LA-UR-16-21847

Journal Information:: Physics of Plasmas, Vol. 23, Issue 8; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 17 works

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Cited By (5)

Critical role of electron heat flux on Bohm criterion Tang, Xian-Zhu; Guo, Zehua Physics of Plasmas, Vol. 23, Issue 12 https://doi.org/10.1063/1.4971808	journal	December 2016
Modeling and simulations of plasma and sheath edges in warm-ion collision-free discharges Kos, L.; Jelić, N.; Gyergyek, T. AIP Advances, Vol. 8, Issue 10 https://doi.org/10.1063/1.5044664	journal	October 2018
Sheath formation in collisional, low pressure, and magnetized plasma Moulick, R.; Adhikari, S.; Goswami, K. S. Physics of Plasmas, Vol. 26, Issue 4 https://doi.org/10.1063/1.5090537	journal	April 2019
3D numerical investigation of a free-burning argon arc with metal electrodes using a novel sheath coupling procedure Liang, P.; Trelles, J. P. Plasma Sources Science and Technology, Vol. 28, Issue 11 https://doi.org/10.1088/1361-6595/ab4bb6	journal	November 2019
Analytic solution for a joint Bohm sheath and pre-sheath potential profile Martin, P.; Maass, F.; Calderón, F. A. Physica Scripta, Vol. 95, Issue 1 https://doi.org/10.1088/1402-4896/ab2b1a	journal	November 2019

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