Streamer Structures in Experiment and Modeling

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Author(s)

    • YAMADA Takuma
    • Graduate School of Frontier Sciences, The University of Tokyo|Itoh Research Center for Plasma Turbulence, Kyushu University
    • ITOH Kimitaka
    • Itoh Research Center for Plasma Turbulence, Kyushu University|National Institute for Fusion Science
    • SASAKI Makoto
    • Itoh Research Center for Plasma Turbulence, Kyushu University|Research Institute for Applied Mechanics, Kyushu University
    • KASUYA Naohiro
    • Itoh Research Center for Plasma Turbulence, Kyushu University|Research Institute for Applied Mechanics, Kyushu University
    • NAGASHIMA Yoshihiko
    • Itoh Research Center for Plasma Turbulence, Kyushu University|Research Institute for Applied Mechanics, Kyushu University
    • INAGAKI Shigeru
    • Itoh Research Center for Plasma Turbulence, Kyushu University|Research Institute for Applied Mechanics, Kyushu University
    • KOBAYASHI Tatsuya
    • Itoh Research Center for Plasma Turbulence, Kyushu University|Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
    • YAGI Masatoshi
    • Itoh Research Center for Plasma Turbulence, Kyushu University|Japan Atomic Energy Agency
    • FUJISAWA Akihide
    • Itoh Research Center for Plasma Turbulence, Kyushu University|Research Institute for Applied Mechanics, Kyushu University
    • ITOH Sanae-I.
    • Itoh Research Center for Plasma Turbulence, Kyushu University|Research Institute for Applied Mechanics, Kyushu University

Abstract

Validation of modeling in meso-scale structure formation is undergoing by using multi-channel probe measurements and advanced analyzing techniques such as bispectrum. Study of meso-scale structures including streamers is important for understanding anomalous transports in magnetized plasmas. A streamer structure and its mediator mode were observed in the Large Mirror Device-Upgrade linear plasma. The mediator mode nonlinearly coupled with many other drift wave modes and generated a streamer structure by phase locking. The radial biphase profiles indicating the phase locking showed the radial elongation of the streamer structure. Modes having similar characteristics to the mediator were also found in a theoretical work based on the Hasegawa-Mima model and a numerical simulation code.

Journal

  • Plasma and Fusion Research

    Plasma and Fusion Research 8(0), 2401022-2401022, 2013

    The Japan Society of Plasma Science and Nuclear Fusion Research

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