Plasma and Fusion Research
Online ISSN : 1880-6821
ISSN-L : 1880-6821
Rapid Communications
Higher Harmonics in the Perturbative Transport Study in TJ-II ECH Plasma
Shigeru INAGAKISanae-I. ITOHKimitaka ITOHKatsumi IDADaniel LÓPEZ-BRUNAMaria A. OCHANDTeresa ESTRADABoudewijn Ph. VAN MILLIGENCarlos HIDALGONaohiro KASUYATJ-II team
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2014 Volume 9 Pages 1202052

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Abstract

We analyzed the higher harmonics of temperature perturbation in the modulated electron cyclotron heating experiment on TJ-II plasma. The higher harmonics (e.g., 5th harmonic) exhibited significantly weaker decay in amplitude as they propagated in radius as compared with the prediction by diffusive model. The change in the time derivative of temperature at the onset (and turning-off) of the heating power propagates in radius with very little temporal smoothening.

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© 2014 by The Japan Society of Plasma Science and Nuclear Fusion Research
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