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Geodesic acoustic mode investigation in the spherical Globus-M tokamak using multi-diagnostic approach

V.V. Bulanin, V.K. Gusev, A.D. Iblyaminova, N.A. Khromov, G.S. Kurskiev, V.B. Minaev, M.I. Patrov, A.V. Petrov, Yu.V. Petrov, N.V. Sakharov2016年被引用 26Nuclear FusionIF 3出版社

The results of a multi-diagnostic approach for geodesic acoustic mode (GAM) studies in the spherical torus Globus-M are presented. The GAM oscillations of radial electric field, plasma density and magnetic field were simultaneously observed. The spatial structures of crucial plasma parameters are exhibited and discussed. The intermittent character of the GAM manifests itself as a modulation at two time-scales: equilibrium time scale and the characteristic time for limit-cycle oscillations. The mutual influence of GAM oscillations and turbulence is demonstrated by bicoherence analysis.

日本語訳

多診断アプローチによる球状トーラス Globus-M における測地線音響モード(GAM)研究の結果を提示する。GAM 振動は、動径電場、プラズマ密度、および磁場において同時に観測された。重要なプラズマパラメータの空間構造を示し、考察する。GAM の間欠的性質は、平衡時間スケールとリミットサイクル振動の特性時間スケールという2つの時間スケールでの変調として現れる。GAM 振動と乱流の相互影響は、バイコヒーレンス解析によって実証される。

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Plasma diagnosticsAcoustic modeGeodesic acoustic modeGlobus-M
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