TITLE

Stabilization of ion temperature gradient driven modes by lower hybrid wave in a tokamak

AUTHOR(S)
Kuley, Animesh; Tripathi, V. K.
PUB. DATE
March 2009
SOURCE
Physics of Plasmas;Mar2009, Vol. 16 Issue 3, p032504
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A gyrokinetic formalism has been developed to study lower hybrid wave stabilization of ion temperature gradient driven modes, responsible for anomalous ion transport in the inner region of tokamak. The parametric coupling between lower hybrid and drift waves produce lower hybrid sideband waves. The pump and the sidebands exert a ponderomotive force on electrons, modifying the eigenfrequency of the drift wave and influencing the growth rate. The longer wavelength drift waves are destabilized by the lower hybrid wave while the shorter wavelengths are suppressed. The requiste lower hybrid power is in the range of ∼900 kW at 4.6 GHz.
ACCESSION #
37258874

 

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