Multipoint Spectroscopy Measurement of Spherical Tokamak Heating by Magnetic Reconnection in UTST
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概要
- 論文の詳細を見る
The temporal evolution of ion temperature and flow was observed to investigate the heating effect of plasma merging in the UTST device by using a multipoint Doppler spectroscopy measurement system. The bulk plasma ion temperature measured by a carbon impurity line was about 15-20 eV after plasma merging. In addition, anomalous broadening of the carbon line width was observed only in the early phase of plasma merging. Since carbon impurity emission comes mainly from the X-point and the vicinity of the center stack, the broad spectrum is considered to consist of a radially bi-directional outflow component from the X-point and a stationary component near the center stack. The outflow velocity estimated from the spectroscopy was about 24 km/s, which agreed well with both an Alfvén velocity of 22 km/s and a velocity of the reconnected field line motion of 35 km/s.
- 社団法人 プラズマ・核融合学会の論文
著者
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Yamada Takuma
Graduate School Of Frontier Science University Of Tokyo
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Takase Yuichi
Graduate School Of Frontier Sciences The Univ. Of Tokyo
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IMAZAWA Ryota
Japan Atomic Energy Agency, 801-1 Mukoyama, Naka 311-0193, Japan
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IMAZAWA Ryota
Japan Atomic Energy Agency, Naka 311-0193, Japan
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KAMIO Shuji
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
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CAO Qinghong
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
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ABE Keita
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
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SAKUMURA Morio
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
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SUZUKI Naoto
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
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WATANABE Takenori
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
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ISHIGUCHI Koji
The Open University of Japan, Mihama 261-8586, Japan
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INOMOTO Michiaki
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
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ONO Yasushi
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
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INOMOTO Michiaki
Graduate School of Frontier Sciences, The University of Tokyo
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TAKASE Yuichi
Graduate School of Frontier Science, University Tokyo, Kashiwa 277-8561, Japan
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