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Radiation condensation instability of compressional electromagnetic modes in magnetoplasmas containing charged dust impurities

P K Shukla, B Eliasson, A Kopp2006年Plasma Physics and Controlled FusionIF 2.2出版社

We report on an investigation into the radiation condensation (RC) instability of low-frequency (in comparison with the electron gyrofrequency) compressional electromagnetic waves in a magnetized plasma containing charged dust impurities. By using a two-fluid model, supplemented by the Faraday and Ampère laws, we derive a new dispersion relation. The latter is numerically analysed to examine the role of charged dust grains on the growth rate of the RC instability. The relevance of our investigation to density condensation in the next generation tokamak edges and on solar prominences is discussed.

日本語訳

我々は、電子ジャイロ周波数と比較して低周波の圧縮性電磁波の放射凝縮(RC)不安定性について、帯電ダスト不純物を含む磁化プラズマ中での調査を報告する。二流体モデルを用い、ファラデーの法則とアンペールの法則を補完して、新しい分散関係を導出する。この分散関係を数値解析し、RC不安定性の成長率に対する帯電ダスト粒子の役割を調べる。我々の調査の、次世代トカマク周辺部および太陽プロミネンスにおける密度凝縮との関連性について議論する。

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Magnetized plasmaImpurityCharged dust
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