OBSERVATION OF LOWER HYBRID CURRENT DRIVE IN THE JIPP T-II TORUS
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概要
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A toroidal current driven by the lower hybrid wave has been observed in low density plasmas in the JIPP T-II. It is confirmed that rf-driven current is generated by momentum transfer of the lower hybrid waves to suprathermal electrons with the energy of 8-25keV. The driving efficiencies in tokamak and stellarator configurations are 1kA/kW and 0.3kA/kW at the power level of 40kW, respectively. Electron cyclotron emission measured by changing the receiving frequency indicates that the current profile driven by rf is hollow. Enhanced electron cyclotron emission due to the pitch-angle scattering of rf-driven runaway electrons is observed, and spikes in loop voltage and X-ray bursts appear coincidentally. In a long rf pulse, these rapid changes advance to relaxation oscillations. It is concluded that the pulsating changes originate in the instantaneous scattering of rf-driven runaway electrons by the unstable waves excited at an anomalous Doppler resonance.
- 核融合科学研究所の論文
著者
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Tetsuka T.
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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FUJITA J.
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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Ohkubo 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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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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Sakurai K.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Takamura S.
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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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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Tanahashi S.
Research Information Center Institute Of Plasma Physics Nagoya University
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Ohkubo K.
Research Information Center Institute Of Plasma Physics Nagoya University
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Tsukishima T.
Research Information Center Institute Of Plasma Physics Nagoya University:department Of Electrical E
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