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Stability of an axially symmetric rotating plasma

T.I. Gutkin, V.S. Tsypin, G.I. Boleslavskaya1974年被引用 2Nuclear FusionIF 3出版社

The authors studied the stability of a cold axially symmetric rotating plasma against axially symmetric perturbations. They demonstrate that a plasma of this kind can only be aperiodically unstable. A plasma with a rotation frequency Ω that is much smaller than the ratio of the mean Alfvén velocity A to the plasma radius a, and with a sufficiently smooth equilibrium parameter profile is unstable with negligibly small growth rates (much less than the rotation frequency Ω). At high rotation frequencies Ω (Ω ∼ A/a) the growth rate for the plasma instability γ can be made fairly small (γ ≪ Ω) by suitably selecting the radial dependence of the equilibrium parameters.

日本語訳

著者らは、軸対称な冷たい回転プラズマの軸対称摂動に対する安定性を研究した。彼らは、この種のプラズマは非周期的にのみ不安定になり得ることを示した。回転周波数Ωが平均アルフヴェン速度Aとプラズマ半径aの比よりもはるかに小さい場合、十分に滑らかな平衡パラメータの分布を持つプラズマは、無視できるほど小さい成長率(回転周波数Ωよりもはるかに小さい)で不安定となる。高い回転周波数Ω(Ω ∼ A/a)では、平衡パラメータの動径依存性を適切に選択することにより、プラズマ不安定性の成長率γをかなり小さく(γ ≪ Ω)することができる。

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Rotating plasma
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