Some Observations of a Linear Screw-Pinch Discharge
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概要
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Plasma properties in a linear screw-pinch discharge are investigated on the problems of the production and the stability. This device is characterized with that the half periods of both z-and theta-currents are as long as 32 μs. Plasma behaviors are observed for different time intervals between starts of z-and theta-pinch discharge, and the preionization, the z-pinch discharge in this experiment, is necessary for the uniform and reproducible discharge. The electron temperature and density measured by laser scattering and interferometry are ≲ 10 eV and ∿ 10^<16> cm^<-3>, respectively, in a normal pressure region. The sudden collapse of the outer region of the plasma column near at the current maximum is observed at certain conditions and its reason and suppression are considered. The magnetohydrodynamic stability is also investigated, taking into account the distributed current, to explain the mode m = 2 which appears even within the Kruskal-Shafranov limit in the experiment. The effect of the superposition of the high frequency z-current is examined with a relation to the dynamic stabilization.
- 核融合科学研究所の論文
著者
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Hayase Kiyoshi
Research Information Center Institute Of Plasma Physics Nagoya University:department Of Electronics
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Okuda Takayoshi
Research Information Center Institute Of Plasma Physics Nagoya University:department Of Electrical E
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Okuda Takayoshi
Research Information Center Institute Of Plasma Physics Nagoya University:department Of Electronics
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