Observation of Nonlinear Coupling between Low Frequency Coherent Modes and Background Turbulence in LMD-U

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概要

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• A solitary wave like fluctuating structure is observed in the Large Mirror Device-Upgrade (LMD-U) under relatively high neutral pressure conditions. Ion saturation current fluctuations are measured and Fourier and wavelet power spectra are calculated. Temporal behavior of fluctuation power and strength of nonlinear coupling of low frequency coherent mode and background turbulence in a specific frequency region is analyzed. This is achieved using wavelet spectral and bispectral analyses with conditional averaging.

著者

• Inagaki Shigeru

  Research Institute For Applied Mechanics Kyushu University

• Yagi Masatoshi

  Research Instittue For Applied Mechanics Kyushu University

• Itoh Sanae-i.

  Research Instittue For Applied Mechanics Kyushu University

• Fujisawa Akihide

  Research Institute For Applied Mechanics Kyushu University

• KOBAYASHI Tatsuya

  Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan

• ITOH Kimitaka

  Itoh Research Center for Plasma Turbulence, Kyushu University, Kasuga, Fukuoka 816-8580, Japan

• Sugita Satoru

  Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan

• SASAKI Makoto

  Research Institute for Applied Mechanics, Kyushu University, Fukuoka 816-8580, Japan

• YAGI Masatoshi

  Research Institute for Applied Mechanics, Kyushu University, Fukuoka 816-8580, Japan

• OLDENBÜRGER Stella

  Itoh Research Center for Plasma Turbulence, Kyushu University, Fukuoka 816-8580, Japan

• ARAKAWA Hiroyuki

  Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 816-8580, Japan

• NAGASHIMA Yoshihiko

  Itoh Research Center for Plasma Turbulence, Kyushu University, Fukuoka 816-8580, Japan

• YAMADA Takuma

  Itoh Research Center for Plasma Turbulence, Kyushu University, Fukuoka 816-8580, Japan

• KASUYA Naohiro

  Itoh Research Center for Plasma Turbulence, Kyushu University, Fukuoka 816-8580, Japan

• ITOH Sanae-I.

  Research Institute for Applied Mechanics, Kyushu University, Fukuoka 816-8580, Japan

• OLDENBÜRGER Stella

  Itoh Research Center for Plasma Turbulence, Kyushu University

• NAGASHIMA Yoshihiko

  Itoh Research Center for Plasma Turbulence, Kyushu University

• KASUYA Naohiro

  Itoh Research Center for Plasma Turbulence, Kyushu University

• ITOH Kimitaka

  Itoh Research Center for Plasma Turbulence, Kyushu University

• YAMADA Takuma

  Itoh Research Center for Plasma Turbulence, Kyushu University

• INAGAKI Shigeru

  Research Institute for Applied Mechanics, Kyushu University, Fukuoka 816-8580, Japan

• KOBAYASHI Tatsuya

  Interdisciplinary Graduate School of Engineering Sciences, Kyushu University

• SUGITA Satoru

  Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 816-8580, Japan

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