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Observations of ion-beam formation in a current-free doublelayer

Sun, Xuan; Keesee, Amy M.; Biloiu, Costel; Scime, Earl E; Meige, Albert; Charles, Christine; Boswell, Roderick

Description

With nonperturbative laser-induced fluorescence measurements of ion flow, we confirm numerical simulations of spontaneous electric double-layer (DL) formation in a current-free expanding plasma. Measurements in two different experiments confirm that the DL is localized to the region of rapidly diverging magnetic field. The measurements indicate that the trapped ion population is a single Maxwellian, that the spatial gradient of the energy of ions accelerated through the DL matches the magnetic...[Show more]

dc.contributor.authorSun, Xuan
dc.contributor.authorKeesee, Amy M.
dc.contributor.authorBiloiu, Costel
dc.contributor.authorScime, Earl E
dc.contributor.authorMeige, Albert
dc.contributor.authorCharles, Christine
dc.contributor.authorBoswell, Roderick
dc.date.accessioned2015-12-13T22:58:00Z
dc.date.available2015-12-13T22:58:00Z
dc.identifier.issn0031-9007
dc.identifier.urihttp://hdl.handle.net/1885/83235
dc.description.abstractWith nonperturbative laser-induced fluorescence measurements of ion flow, we confirm numerical simulations of spontaneous electric double-layer (DL) formation in a current-free expanding plasma. Measurements in two different experiments confirm that the DL is localized to the region of rapidly diverging magnetic field. The measurements indicate that the trapped ion population is a single Maxwellian, that the spatial gradient of the energy of ions accelerated through the DL matches the magnetic field gradient, and that DL formation is triggered when the ion-neutral collisional mean-free path exceeds the magnetic field gradient scale length.
dc.publisherAmerican Physical Society
dc.sourcePhysical Review Letters
dc.subjectKeywords: Current-free double layer; Ion-beam formation; Magnetic field gradient; Magnetic field effects; Plasmas; Ion beams
dc.titleObservations of ion-beam formation in a current-free doublelayer
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume95
dc.date.issued2005
local.identifier.absfor020204 - Plasma Physics; Fusion Plasmas; Electrical Discharges
local.identifier.ariespublicationMigratedxPub11458
local.type.statusPublished Version
local.contributor.affiliationSun, Xuan, West Virginia University
local.contributor.affiliationKeesee, Amy M., West Virginia University
local.contributor.affiliationBiloiu, Costel, West Virginia University
local.contributor.affiliationScime, Earl E, West Virginia University
local.contributor.affiliationMeige, Albert, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationCharles, Christine, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationBoswell, Roderick, College of Physical and Mathematical Sciences, ANU
local.bibliographicCitation.issue025004
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage4
local.identifier.doi10.1103/PhysRevLett.95.025004
dc.date.updated2015-12-12T07:20:20Z
local.identifier.scopusID2-s2.0-27144552578
CollectionsANU Research Publications

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