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Suppression of turbulence at low power input in a model for plasma confinement transitions

Ball, R.

Description

A physics-based condition is used to unfold a trapped or persistent degenerate singularity in a dynamical model for plasma confinement transitions. The bifurcation structure of the resulting enhanced model indicates that shear flow can actually grow as the power input is withdrawn, with concomitant supersuppression of turbulence. This is an important and testable prediction that suggests new design, management, and optimization strategies for new-generation fusionexperiments.

dc.contributor.authorBall, R.
dc.date.accessioned2015-09-23T05:15:29Z
dc.date.available2015-09-23T05:15:29Z
dc.identifier.issn1070-664X
dc.identifier.urihttp://hdl.handle.net/1885/15671
dc.description.abstractA physics-based condition is used to unfold a trapped or persistent degenerate singularity in a dynamical model for plasma confinement transitions. The bifurcation structure of the resulting enhanced model indicates that shear flow can actually grow as the power input is withdrawn, with concomitant supersuppression of turbulence. This is an important and testable prediction that suggests new design, management, and optimization strategies for new-generation fusionexperiments.
dc.format8 pages
dc.publisherAmerican Institute of Physics
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 23/09/15). Copyright 2005 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 (Ball, R. "Suppression of turbulence at low power input in a model for plasma confinement transitions." Physics of Plasmas (1994-present) 12.9 (2005): 090904.) and may be found at https://doi.org/10.1063/1.2034327
dc.sourcePhysics of Plasmas
dc.subjectKeywords: Bifurcation (mathematics); Fusion reactions; Mathematical models; Optimization; Plasmas; Shear flow; Bifurcation structure; Confinement transitions; Plasma confinement transitions; Supersuppression; Turbulence
dc.titleSuppression of turbulence at low power input in a model for plasma confinement transitions
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume12
dc.date.issued2005-09-21
local.identifier.absfor020204
local.identifier.absfor010109
local.identifier.ariespublicationMigratedxPub11474
local.publisher.urlhttps://www.aip.org/
local.type.statusPublished Version
local.contributor.affiliationBall, Rowena, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Theoretical Physics, The Australian National University
local.bibliographicCitation.issue9
local.bibliographicCitation.startpage090904
local.identifier.doi10.1063/1.2034327
dc.date.updated2015-12-12T07:20:39Z
local.identifier.scopusID2-s2.0-27344439642
CollectionsANU Research Publications

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