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Particle-in-cell simulations of ambipolar and nonambipolar diffusion in magnetized plasmas

Lafleur, T.; Boswell, R. W.

Description

Using a two-dimensional particle-in-cell simulation, we investigate cross-field diffusion in low-pressure magnetized plasmas both in the presence and absence of conducting axial boundaries. With no axial boundary, the cross-field diffusion is observed to be ambipolar, as expected. However, when axial boundaries are added, the diffusion becomes distinctly nonambipolar. Electrons are prevented from escaping to the transverse walls and are preferentially removed from the discharge along the...[Show more]

dc.contributor.authorLafleur, T.
dc.contributor.authorBoswell, R. W.
dc.date.accessioned2015-12-08T23:07:50Z
dc.date.available2015-12-08T23:07:50Z
dc.identifier.issn1070-664X
dc.identifier.urihttp://hdl.handle.net/1885/38418
dc.description.abstractUsing a two-dimensional particle-in-cell simulation, we investigate cross-field diffusion in low-pressure magnetized plasmas both in the presence and absence of conducting axial boundaries. With no axial boundary, the cross-field diffusion is observed to be ambipolar, as expected. However, when axial boundaries are added, the diffusion becomes distinctly nonambipolar. Electrons are prevented from escaping to the transverse walls and are preferentially removed from the discharge along the magnetic field lines, thus allowing quasi-neutrality to be maintained via a short-circuit effect at the axial boundaries.
dc.publisherAmerican Institute of Physics (AIP)
dc.rightshttp://www.sherpa.ac.uk/romeo/issn/1070-664X..."Publishers version/PDF may be used on author's personal website, institutional website or institutional repository" from SHERPA/RoMEO site (as at 9/12/15). Copyright 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Physics of Plasmas and may be found at https://doi.org/10.1063/1.4719701
dc.sourcePhysics of Plasmas
dc.subjectKeywords: Ambipolar; Magnetic field line; Magnetized plasmas; Particle-in-cell simulations; Transverse walls; Magnetic fields; Magnetoplasma; Particle beam dynamics; Diffusion
dc.titleParticle-in-cell simulations of ambipolar and nonambipolar diffusion in magnetized plasmas
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume19
dc.date.issued2012-05-23
local.identifier.absfor020204
local.identifier.ariespublicationu4695161xPUB91
local.publisher.urlhttps://www.aip.org/
local.type.statusPublished Version
local.contributor.affiliationLafleur, Trevor, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Plasma Research Laboratory, The Australian National University
local.contributor.affiliationBoswell, Roderick, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Plasma Research Laboratory, The Australian National University
local.bibliographicCitation.issue5
local.bibliographicCitation.startpage053505
local.bibliographicCitation.lastpage7
local.identifier.doi10.1063/1.4719701
dc.date.updated2016-02-24T11:20:09Z
local.identifier.scopusID2-s2.0-84862136735
local.identifier.thomsonID000304831100043
CollectionsANU Research Publications

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