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New insights into MHD dynamics of magnetically confined plasmas from experiments in RFX

P. Martin, S. Martini, V. Antoni, L. Apolloni, M. Bagatin, W. Baker, O. Barana, R. Bartiromo, P. Bettini, A. Boboc2002年被引用 16Nuclear FusionIF 3出版社

The experimental and theoretical activity performed in the RFX device hasallowed a deeper insight into the MHD properties of the reversed field pinch (RFP)configuration. A set of successful experiments has demonstrated the possibility ofinfluencing both the amplitude and the spectrum of the magnetic fluctuations whichcharacterize the RFP configuration. A new regime (quasi-single-helicity states) wherethe dynamo mechanism works in a nearly laminar way and a helical core plasma is producedhas been investigated. With these studies a reduction of magnetic chaos has been obtained.The continuous rotation of wall locked resistive tearing modes has been obtained by anm = 0 rotating perturbation. This perturbation induces rotation of m = 1 non-linearlycoupled modes.

日本語訳

RFX装置において実施された実験的および理論的活動により、反転磁場ピンチ(RFP)配位のMHD特性についてより深い理解が得られた。一連の成功した実験により、RFP配位を特徴づける磁気揺動の振幅とスペクトルの両方に影響を与える可能性が実証された。ダイナモ機構がほぼ層流的に働く新たな領域(準単一ヘリシティ状態)が研究され、ヘリカルコアプラズマが生成された。これらの研究により、磁気カオスの低減が達成された。壁に固定された抵抗性テアリングモードの連続回転が、m = 0の回転摂動によって実現された。この摂動は、非線形的に結合したm = 1モードの回転を誘起する。

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MagnetohydrodynamicsRFX
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