Nonlinear Mode Couplings in a Cylindrical Magnetized Plasma
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概要
- 論文の詳細を見る
Nonlinear mode couplings in plasma turbulence generate mesoscale global structures, such as zonal flows and streamers. A streamer is a poloidally localized structure that is radially elongated. In the Large Mirror Device-Upgrade, a streamer structure was observed in the ion saturation-current fluctuation measured with a 64-channel poloidal Langmuir probe array. The bunching of waves was poloidally localized and rotated slowly in the ion diamagnetic direction. The frequency and poloidal mode number of its envelope corresponded to one particular mode, which was strongly coupled with many other modes. By calculating the radial biphase profile of three pronounced modes, including the particular mode, the streamer structure was confirmed to be radially elongated.
著者
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Yamada Takuma
Graduate School Of Frontier Science University Of Tokyo
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Shinohara Shunjiro
Interdisciplinary Graduate School Of Engineering Science Kyushu University
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KASUYA Naohiro
National Institute for Fusion Science
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Inagaki Shigeru
Research Institute For Applied Mechanics Kyushu University
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Yagi Masatoshi
Research Instittue For Applied Mechanics Kyushu University
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Itoh Sanae-i.
Research Instittue For Applied Mechanics Kyushu University
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Itoh Kimitaka
National Inst. For Fusion Sci. Gifu
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Terasaka Kenichiro
Interdisciplinary Graduate School Of Engineering Science Kyushu University
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Fujisawa Akihide
Research Institute For Applied Mechanics Kyushu University
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ARAKAWA Hiroyuki
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 816-8580, Japan
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KAMATAKI Kunihiro
Research Institute for Applied Mechanics, Kyushu University, Fukuoka 816-8580, Japan
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NAGASHIMA Yoshihiko
Graduate School of Frontier Science, The University of Tokyo, Kashiwa 277-8561, Japan
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TERASAKA Kenichiro
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
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