TOKAMAK EXPERIMENTS ON JIPP T-II WITH PULSED GAS INJECTION
スポンサーリンク
概要
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The confinement of tokamak plasma has been investigated in the wide range of electron density n^^^-_e from 1×10^<13> to 5×10^<13>cm^<-3> by using the pulsed gas injection. The gross energy confinement time <τ_E> increases with increase of electron density and reaches 14 msec. The averaged effective ionic charge derived from plasma conductivity <Z_<eff>>≡<σ_<SP>/σ_<exp>> is about 1 to 2 in the regime of small streaming parameter (<v_d/v_<the>>=0.01∿0.08). The ratio of ion temperature to electron one is in the range greater than 0.5. This fact means that the ion energy confinement time is greater than the electron-ion energy relaxation time. Excessive injection of cold neutral gas excites m=2 MHD oscillations. Much more gas injection leads to the remarkable cooling of plasma periphery and disruptive instabilities. These MHD oscillations and disruptive instabilities have been suppressed by the heating of plasma periphery with the second rapid rise of plasma current.
- 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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Itoh S.
Research Institute For Applied Mechanics Kyushu 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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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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Kawasumi Y.
Research Information Center Institute Of Plasma Physics Nagoya University
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Kadota K.
Research Information Center Institute Of Plasma Physics Nagoya University
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ITOH S.
Natl. Inst. Basic Biol.
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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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Itoh S.
Research Information Center Institute Of Plasma Physics Nagoya University:the Institute Of Physical And Chemical Research
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