Higher Harmonics in the Perturbative Transport Study in TJ-II ECH Plasma

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Author(s)

    • INAGAKI Shigeru
    • Research Institute for Applied Mechanics, Kyushu University|Research Center for Plasma Turbulence, Kyushu University
    • KASUYA Naohiro
    • Research Institute for Applied Mechanics, Kyushu University|Research Center for Plasma Turbulence, Kyushu University
    • ITOH Sanae-I.
    • Research Institute for Applied Mechanics, Kyushu University|Research Center for Plasma Turbulence, Kyushu University
    • ITOH Kimitaka
    • Research Center for Plasma Turbulence, Kyushu University|National Institute for Fusion Science
    • IDA Katsumi
    • Research Center for Plasma Turbulence, Kyushu University|National Institute for Fusion Science

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.

Journal

  • Plasma and Fusion Research

    Plasma and Fusion Research 9(0), 1202052-1202052, 2014

    The Japan Society of Plasma Science and Nuclear Fusion Research

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