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Galatea trap: magnetohydrodynamic stability of plasma surrounding current-carrying conductors

S Yu Medvedev, A A Martynov, A N Kozlov, V V Savelyev2020年Plasma Physics and Controlled FusionIF 2.2出版社

Ideal magnetohydrodynamic (MHD) properties depending on the plasma pressure are considered for axisymmetric equilibrium magnetoplasma configurations in the Galatea trap with three ring current-carrying conductors embedded in plasma. The study of ideal MHD modes with different toroidal wave numbers takes into account the plasma compressibility with an adiabatic index of 5/3 in the perturbed potential energy functional in the framework of the energy principle. The stability calculations are performed in the presence of a vacuum layer between the plasma and the vacuum chamber. The limiting pressure values corresponding to stable multiply connected plasma configurations without an assumption of nested magnetic surfaces are estimated.

日本語訳

ガラテアトラップにおける軸対称平衡磁気プラズマ配位について、プラズマ圧力に依存する理想磁気流体力学(MHD)特性を考察する。プラズマ中に埋め込まれた3つの環状電流導体を有する配位において、異なるトロイダル波数を持つ理想MHDモードの研究は、エネルギー原理の枠組みにおける摂動ポテンシャルエネルギー汎関数において、断熱指数5/3を持つプラズマ圧縮性を考慮する。安定性計算は、プラズマと真空容器の間に真空層が存在する場合について行われる。入れ子状の磁気面を仮定しない多重連結プラズマ配位に対応する限界圧力値を評価する。

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