Long Range Temperature Fluctuation in LHD
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概要
- 論文の詳細を見る
We report a detailed correlation technique to identify the long-range temperature fluctuation in the Large Helical Device. Correlation hunting has successfully realized the observation of electron temperature fluctuations, which are characterized by their correlation length comparable to the plasma minor radius, with low frequency of ∼ 1-3 kHz, ballistic radial propagation (at a speed of ∼1 km/s, of the order of diamagnetic drift velocity), spatial mode number of m/n = 1/1 (or 2/1), and amplitude of ∼2% at the maximum. Bicoherence analysis confirmed their nonlinear coupling with local microscopic turbulent fluctuations. This long-range temperature fluctuation is a possible carrier of fast propagation in transport processes observed so far. We also comment on the theoretical interpretation.
著者
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KUBO Shin
National Insitute for Fusion Science
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SHIMOZUMA Takashi
National Insitute for Fusion Science
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KAWAHATA Kazuo
National Insitute for Fusion Science
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KOMORI Akio
National Insitute for Fusion Science
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YAMADA Hiroshi
National Insitute for Fusion Science
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NAGAYAMA Yoshio
National Insitute for Fusion Science
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SAKAKIBARA Satoru
National Insitute for Fusion Science
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SUDO Shigeru
National Insitute for Fusion Science
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TOKUZAWA Tokihiko
National Insitute for Fusion Science
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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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Tamura Naoki
National Institute For Fusion Science
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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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Ido Takeshi
National Inst. For Fusion Sci. Toki 509-5292 Jpn
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Tanaka Kenji
National Food Institute
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Fujisawa Akihide
Research Institute For Applied Mechanics Kyushu University
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KOBAYASHI Tatsuya
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
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ITOH Kimitaka
Itoh Research Center for Plasma Turbulence, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
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Ida Katsumi
Itoh Research Center for Plasma Turbulence, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
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NISHIMURA Seiya
National Institute for Fusion Science, Toki 509-5292, Japan
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ARAKAWA Hiroyuki
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 816-8580, Japan
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SHIMOZUMA Takashi
National Institute for Fusion Science, Toki 502-5292, Japan
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KAWAHATA Kazuo
National Institute for Fusion Science, Toki 502-5292, Japan
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TOKUZAWA Tokihiko
National Institute for Fusion Science, Toki 502-5292, Japan
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NISHIMURA Seiya
National Institute for Fusion Science, Toki 502-5292, Japan
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NISHIMURA Seiya
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki, Gifu 509-5292, Japan
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ITOH Kimitaka
Itoh Research Center for Plasma Turbulence, Kyushu University
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ARAKAWA Hiroyuki
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
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KOBAYASHI Tatsuya
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
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IDO Takeshi
National Institute for Fusion Science, Toki 502-5292, Japan
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YAMADA Hiroshi
National Institute for Fusion Science, Toki 502-5292, Japan
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KUBO Shin
National Institute for Fusion Science, Toki 502-5292, Japan
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TANAKA Kenji
National Institute for Fusion Science, Toki 502-5292, Japan
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