Application of a particle, momentum and energy balance model to calculate the structure of the edge pedestal in DIII-D

dc.contributor.author Stacey, Weston M.
dc.contributor.author Groebner, Rich J.
dc.date.accessioned 2006-04-12T16:13:51Z
dc.date.available 2006-04-12T16:13:51Z
dc.date.issued 2005-04
dc.description Reprinted by permission of American Institute of Physics, http://journals.aip.org
dc.description.abstract A calculation of edge density and temperature profiles based on "classical" physics - particle, momentum and energy balance, heat conduction closure relations, neutral particle transport - yielded a pedestal structure that is qualitatively and quantitatively similar to that found experimentally in five DIII-D [J. Luxon, Nucl. Fusion,42, 614 (2002)] discharges, when experimental radial electric field and rotation profiles and experimentally inferred heat transport coefficients were used. The principal cause of the density pedestal was a peaking of the inward pinch velocity just inside the separatrix caused by the negative well in the experimental electric field, and the secondary cause was a peaking of the radial particle flux caused by the ionization of incoming neutrals. There is some evidence that this peaking of the radial particle flux just inside the separatrix may also be responsible in part for the negative electric field in that location.
dc.format.extent 227663 bytes
dc.format.mimetype application/pdf
dc.identifier.citation Physics of Plasmas Vol. 12, no. 4 (April 2005) (12 pages)
dc.identifier.uri http://hdl.handle.net/1853/9261
dc.language.iso en_US en
dc.publisher Georgia Institute of Technology en
dc.publisher.original American Institute of Physics
dc.subject Heat conduction
dc.subject Ionization
dc.subject Plasma density
dc.subject Plasma edges
dc.subject Plasma temperature
dc.subject Plasma toroidal confinement
dc.subject Plasma transport processes
dc.subject Plasma-beam interactions
dc.subject Tokamaks
dc.title Application of a particle, momentum and energy balance model to calculate the structure of the edge pedestal in DIII-D en
dc.type Text
dc.type.genre Post-print
dspace.entity.type Publication
local.contributor.author Stacey, Weston M.
local.contributor.corporatename George W. Woodruff School of Mechanical Engineering
local.contributor.corporatename Fusion Research Center
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relation.isOrgUnitOfPublication 0362cc39-e3e9-4cfb-be39-c6552423bdd2
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