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An equilibrium model for RFP plasmas in the presence of resonant tearing modes

P Zanca, F Sattin2003年Plasma Physics and Controlled FusionIF 2.2出版社

The equilibrium of a finite-β reversed field pinch (RFP) plasma in the presence of saturated-amplitude stationary tearing modes is investigated. The singularities of the magnetohydrodynamical force balance equation  J×B = ∇p at the rational surfaces of the modes are resolved through a proper regularization of the cylindrical symmetric component of the profiles, by setting to zero there the gradient of the pressure and parallel current density. An equilibrium model, which satisfies the regularization rule at the various rational surfaces, is developed. The comparison with experimental data from the reversed field experiment (RFX) gives encouraging results. We will show that the model provides an easy tool for magnetic analysis.

日本語訳

有限ベータの逆転磁場ピンチ(RFP)プラズマにおける、飽和した振幅の定常テアリングモードの存在下での平衡を調査する。モードの有理面における磁気流体力学力平衡方程式 J×B = ∇p の特異性は、圧力勾配と平行電流密度をそこでゼロに設定することにより、プロファイルの円筒対称成分の適切な正則化を通じて解決される。様々な有理面において正則化則を満たす平衡モデルが開発される。逆転磁場実験(RFX)からの実験データとの比較は、有望な結果を与える。このモデルが磁気解析のための容易なツールを提供することを示す。

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Tearing modeReversed field pinch
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