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Transport barriers and bifurcation characteristics in stellarators

Akihide Fujisawa2002年Plasma Physics and Controlled FusionIF 2.2出版社

Transport barriers in the present stellarators are reviewed in comparison with those in tokamaks. Peculiarities of stellarator plasma structures are introduced in order to obtain a unified view of the barrier formation mechanism.Particular attention is paid toneoclassical (-driven) internal transport barriersthat are commonly observed in stellarators.Discussion is made about important aspects of structural formation; e.g. the formation or bifurcation mechanism of radial electric field and its causal link with the transport barrier, and effects of magnetic field configuration on the barrier formation.

日本語訳

本稿では、現在のヘリカル装置における輸送障壁をトカマクのものと比較しながら概説する。障壁形成機構の統一的な理解を得るために、ヘリカル装置のプラズマ構造の特異性を紹介する。特に、ヘリカル装置で一般的に観測される新古典的(内部)輸送障壁に注目する。構造形成の重要な側面、例えば径電場の形成・分岐機構と輸送障壁との因果関係、および磁場配位が障壁形成に及ぼす影響について議論する。

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