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Possible beneficial ponderomotive force effects on fast-wave coupling in tokamaks

Published online by Cambridge University Press:  13 March 2009

V. A. Petržílka
V. A. Petržílka
Affiliation:
Institute of Plasma Physics, Czech Academy of Sciences, Za Slovankou 3, P.O. Box 17, 182 11 Praha 8, Czech Republic
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Abstract

At lower-hybrid frequencies in tokamaks, ponderomotive forces at fast-wave launching typically lead in the vicinity of the launching structure to a boundary plasma density increase. This results in a decrease in the reflection coefficient, and, in detached plasmas, to the appearance of a local electric field maximum at several centimetres from the launching grill structure; this electric field maximum is connected to the reversal of the plasma density gradient near the grill mouth because of ponderomotive force effects.

Type
Research Article
Information
Journal of Plasma Physics , Volume 51 , Issue 3 , June 1994 , pp. 433 - 440
Copyright
Copyright © Cambridge University Press 1994

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