Radiation−condensation instability in tokamaks with mixed impurities

Radiation−condensation instability (RCI) is one of the possible mechanisms behind the formation of microfaceted asymmetric radiation from the edge (MARFE) of a tokamak. It has been previously shown by the authors that RCI in carbon-seeded plasma can be stabilized using neon injection. Recently, bery...

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Bibliographic Details
Published inPlasma physics reports Vol. 41; no. 8; pp. 599 - 606
Main Authors Morozov, D. Kh, Pshenov, A. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.08.2015
Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ASYMMETRY
Atomic
BERYLLIUM
CARBON
EDGE LOCALIZED MODES
HYDROGEN
MARFE
Molecular
NEON
NITROGEN
Optical and Plasma Physics
Physics
Physics and Astronomy
PLASMA
PLASMA INSTABILITY
TOKAMAK DEVICES
Tokamaks
TUNGSTEN
Neutral Hydrogen
Plasma Physic Report
Main Plasma
Edge Plasma
Beryllium
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ISSN1063-780X
1562-6938
DOI10.1134/S1063780X15080073

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Summary:Radiation−condensation instability (RCI) is one of the possible mechanisms behind the formation of microfaceted asymmetric radiation from the edge (MARFE) of a tokamak. It has been previously shown by the authors that RCI in carbon-seeded plasma can be stabilized using neon injection. Recently, beryllium- and tungsten-seeded plasmas became a subject of great interest. Therefore, in the present paper, RCI stability analysis of the edge plasma seeded with beryllium, tungsten, nitrogen, and carbon is performed. The influence of neutral hydrogen fluxes from the wall on the marginal stability limit is studied as well.
ISSN:1063-780X
1562-6938
DOI:10.1134/S1063780X15080073