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Influence of a collisional plasma background on the classification of the two-stream instability

E. Infeld1971年被引用 1Nuclear FusionIF 3出版社

This paper gives a general method for finding the line of marginal absolute instability and lines of equal asymptotic growth rates in parameter space for streams and a collisional plasma when the stability analysis for the same problem without plasma is known. The region of absolute instability is seen to be diminished whenever ν ≠ 0 (collision frequency ≠ 0). For ν = 0 the plasma background does not change the region of absolute instability, but growth rates are diminished. For this case and two cold streams the asymptotic growth rates are found analytically. Previous results are seen to be too narrow and singular to give an adequate picture of what is happening.

日本語訳

本論文は、プラズマを伴わない同じ問題に対する安定性解析が既知である場合に、ストリームと衝突性プラズマに対するパラメータ空間における絶対不安定性の境界線と等しい漸近成長率の線を見つけるための一般的な方法を与える。絶対不安定性の領域は、ν ≠ 0(衝突周波数 ≠ 0)のときは常に減少することがわかる。ν = 0の場合、背景プラズマは絶対不安定性の領域を変えないが、成長率は減少する。この場合と2つの冷たいストリームの場合について、漸近成長率が解析的に求められる。従来の結果は、何が起こっているかを適切に把握するには狭すぎ、特異的すぎることがわかる。

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Collisional plasma
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