MAGNETOHYDRODYNAMIC INSTABILITIES IN A STELLARATOR
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概要
- 論文の詳細を見る
Numerical studies of stability on kink and resistive tearing modes in a linear stellarator are presented for various current profiles and helical fields. In the case of an ℓ=2 helical field, a magnetic shear vanishes and the stability diagram is given by the straight lines with ℩^σ+℩^δ=const., where ℩^σ is a rotational transform due to the plasma current and ℩^δ is due to the helical field. In the ℓ=2 stellarator with χ^δ>0.5,the m.h.d. stability against kink and tearing modes is improved compared with that in tokamaks. While an ℓ=3 helical component exists, the magnetic shear plays an important role in the stability properties. The stability diagrams become fairly complex; however, they can be explained by properties of the Euler equation. It should be noted that the internal kink modes become more unstable than in tokamaks by the ℓ=3 helical field.
- 核融合科学研究所の論文
著者
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Matsuoka K.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Miyamoto K.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Ohasa K.
Research Information Center Institute Of Plasma Physics Nagoya University
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Wakatani M.
Research Information Center, Institute of Plasma Physics, Nagoya University
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Miyamoto K.
Research Information Center Institute Of Plasma Physics Nagoya University:jipp T-ii Group
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Wakatani M.
Research Information Center Institute Of Plasma Physics Nagoya University
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