Computer simulation of the sheath and the adjacent plasma in the presence of a plasma source

E.G. Shustin; V.P. Tarakanov; K. Ronald

doi:10.1016/j.vacuum.2016.10.002

Computer simulation of the sheath and the adjacent plasma in the presence of a plasma source

E.G. Shustin, V.P. Tarakanov, K. Ronald

Research output: Contribution to journal › Article

4 Citations (Scopus)

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Abstract

A model is constructed allowing computer simulations of the near-wall area of a planar plasma sheet in conditions where the steady state of the plasma is supported by the production of charged particles in a region removed from the wall. Calculations have revealed variation in the energy distribution of the electrons in both time and spatially over the sheet width (cooling the electronic component) due to absorption of fast electrons at the walls bounding the plasma volume. It is shown that the plasma density profile across the sheet width has an abrupt decrease at the boundary of the region of plasma regulation. Thus the standard concepts of the potential and plasma density distributions in the sheath and presheath based on the assumption of a stable energy distribution for the electrons in the presheath yields inaccurate results for the plasma sheet where the ionization source is remote from the wall.

Original language	English
Pages (from-to)	1-6
Number of pages	6
Journal	Vacuum
Volume	135
Early online date	5 Oct 2016
DOIs	https://doi.org/10.1016/j.vacuum.2016.10.002
Publication status	Published - 1 Jan 2017

Keywords

low temperature plasma
energy distribution
plasma sheath
computer simulation

Access to Document

10.1016/j.vacuum.2016.10.002Licence: CC BY-NC-ND 4.0

Shustin-etal-Vacuum-2016-Computer-simulation-of-the-sheathAccepted author manuscript, 471 KBLicence: CC BY-NC-ND 4.0

http://www.sciencedirect.com/science/journal/0042207X

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Projects

2 Finished

Instabilities in non-thermal plasmas

Phelps, A., Bingham, R., Ronald, K. & Speirs, D.

EPSRC (Engineering and Physical Sciences Research Council)

1/04/09 → 31/03/13

Project: Research

Beam driven instabilities in magnetized plasmas

Phelps, A., Bingham, R., Cross, A., Ronald, K. & Speirs, D.

EPSRC (Engineering and Physical Sciences Research Council)

1/04/06 → 30/09/09

Project: Research

Cite this

Shustin, E. G., Tarakanov, V. P., & Ronald, K. (2017). Computer simulation of the sheath and the adjacent plasma in the presence of a plasma source. Vacuum, 135, 1-6. https://doi.org/10.1016/j.vacuum.2016.10.002

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AB - A model is constructed allowing computer simulations of the near-wall area of a planar plasma sheet in conditions where the steady state of the plasma is supported by the production of charged particles in a region removed from the wall. Calculations have revealed variation in the energy distribution of the electrons in both time and spatially over the sheet width (cooling the electronic component) due to absorption of fast electrons at the walls bounding the plasma volume. It is shown that the plasma density profile across the sheet width has an abrupt decrease at the boundary of the region of plasma regulation. Thus the standard concepts of the potential and plasma density distributions in the sheath and presheath based on the assumption of a stable energy distribution for the electrons in the presheath yields inaccurate results for the plasma sheet where the ionization source is remote from the wall.

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KW - energy distribution

KW - plasma sheath

KW - computer simulation

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