<RESEARCH REPORT>VISIBLE-LIGHT IMAGING MHD STUDIES OF THE EDGE PLASMA IN THE JIPP-T-IIU TOKAMAK
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概要
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MHD activity and turbulence near the plasma edge are studied on the JIPP-T-IIU tokamak using a new high-speed visible-light image-converter video-camera system. Different from conventional cinefilm and photo-diode array systems, this system is convenient for the instantaneous display of the high-speed optical plasma images after plasma discharges. The effectiveness of this instrument for the research of the plasma wall interaction is demonstrated in this experiment. The observed characteristics on the edge-plasma behavior are as follows : (1) The helical mode structure of the luminous plasma boundary suggesting plasma-surface interaction is identified in the case of OH or ICRF-heated discharge. (2) In the LH-current drive case, no clear large-scale coherent modes are identified, however, on the initial stage a medium-scale turbulence (λ∿ a few cm, f ∿ ten kHz) is found. (3) Before current disruptions, an m=2 or m=3 helical mode is found and up-down asymmetric light emissions are often observed during disruptions.
- 核融合科学研究所の論文
著者
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Toi K.
Research Information Center Institute Of Plasma Physics Nagoya University
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Tanaka S.
Biol. Lab. Nippon Med. Schl.
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Sato K.
Research Information Center Institute Of Plasma Physics Nagoya University
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Kawahata K.
Research Information Center Institute Of Plasma Physics Nagoya University
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Hiroe S.
Research Information Center Institute Of Plasma Physics Nagoya University
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FUJITA J.
Research Information Center, Institute of Plasma Physics, Nagoya University
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HIROKURA S.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Noda N.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Tanahashi S.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Taniguchi Y.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Miyamoto K.
Dept. Biol. Fac. Sci. Tokyo Metro. Univ.
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Matsuura K.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Yamazaki K.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Haba K.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Hirokura S.
Research Information Center Institute Of Plasma Physics Nagoya University
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Sunako K.
Research Information Center Institute Of Plasma Physics Nagoya University:tokai University
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Kadota K.
Research Information Center Institute Of Plasma Physics Nagoya University
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Sakurai K.
Dept. Biol. Fac. Sci. Tokyo Metro. Univ.
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Terumichi Y.
Research Information Center Institute Of Plasma Physics Nagoya University:department Of Physics Facu
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Matsuura K.
Dept. Biol. Fac. Sci. Tokyo Metro. Univ.
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Sato K.
Dept. Biol. Fac. Sci. Tokyo Metro. Univ.
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Noda N.
Research Information Center Institute Of Plasma Physics Nagoya University
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Fujita J.
Research Information Center Institute Of Plasma Physics Nagoya University
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Sato K.
Research Information Center Institute Of Plasma Physics Nagoya University:tokai University
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Haba K.
Research Information Center Institute Of Plasma Physics Nagoya University
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Takasugi K.
Research Information Center Institute Of Plasma Physics Nagoya University
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Tanahashi S.
Research Information Center Institute Of Plasma Physics Nagoya University
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