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Interchange stability of non-circular reversed field pinches

D.A. Skinner, S.C. Prager, A.M.M. Todd1988年被引用 1Nuclear FusionIF 3出版社

The interchange (Mercier) stability of toroidal reversed field pinch plasmas with non-circular cross-section has been evaluated numerically. Marginally stable pressure profiles and beta values have been produced. Most shapes, such as indented or vertically elongated, reduce the stability by making the net magnetic curvature of the poloidal field dominated plasmas yet worse than that of circular configurations. The stability of horizontally elongated plasmas is slightly enhanced compared with that of circular plasmas as a result of increased shear produced by toroidicity. This shear enhancement by toroidal shift of magnetic surfaces might be exploited in future, more comprehensive studies.

日本語訳

非円形断面を持つトロイダル逆転磁場ピンチプラズマの交換(Mercier)安定性を数値的に評価した。限界安定圧力分布とベータ値を求めた。ほとんどの形状、例えば窪んだ形状や垂直方向に伸びた形状は、ポロイダル磁場が支配的なプラズマの正味の磁気曲率を円形配置のものよりもさらに悪化させることにより、安定性を低下させる。水平方向に伸びたプラズマの安定性は、トロイダル性によって生成されるシアの増加の結果として、円形プラズマと比較してわずかに向上する。磁気面のトロイダルシフトによるこのシア増強は、将来のより包括的な研究において活用される可能性がある。

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Reversed field pinch
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