Plasma and Fusion Research
Online ISSN : 1880-6821
ISSN-L : 1880-6821
Rapid Communications
Higher Harmonics in a Perturbative Transport Experiment
Shigeru INAGAKISanae-I. ITOHKimitaka ITOHNaohiro KASUYATatsuya KOBAYASHIAkihide FUJISAWATokihiko TOKUZAWAKatsumi IDAShin KUBOTakashi SHIMOZUMANaoki TAMURAHayato TSUCHIYAYoshio NAGAYAMAKazuo KAWAHATAHiroshi YAMADAAkio KOMORILHD Experiment Group
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2013 Volume 8 Pages 1202173

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Abstract

We have used the convolution method to obtain higher harmonics of the temperature perturbation in a heating modulation experiment on LHD plasma. In comparison with predictions based on the diffusive model, amplitudes of higher harmonics (such as the seventh) decayed much more slowly as they propagated radially. Changes in the time derivative of temperature at the onset and turning-off of heating power remained much sharper after radial propagation than those predicted by the diffusion model.

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© 2013 by The Japan Society of Plasma Science and Nuclear Fusion Research
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