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Generation of hot closed helical bands by electron cyclotron resonance heating of rational-q Tokamak flux surfaces

R O Dendy1985年Plasma Physics and Controlled FusionIF 2.2出版社

Discusses RF heating of three classes of Tokamak flux surfaces which intersect the electron cyclotron resonance heating region: rational-q, near rational-q and irrational-q. On irrational-q surfaces, the degree of heating is the same for all electrons. One and near rational-q surfaces, heating is localised to closed helical bands of electrons. These hot bands support local enhancements of current density, and act as current-carrying filaments within the plasma. The poloidal magnetic field associated with these currents has X-points. The use of ECRH as a current drive mechanism will enhance these effects, as will an increase in the size of Tokamak major radius.

日本語訳

トカマクの電子サイクロトロン共鳴加熱領域と交差する3種類の磁気面、すなわち有理q面、準有理q面、無理q面におけるRF加熱について論じる。無理q面上では、全ての電子に対する加熱の程度は同じである。有理q面および準有理q面上では、加熱は閉じた螺旋状の電子帯に局在化する。これらの高温帯は電流密度の局所的な増強を支え、プラズマ内の電流フィラメントとして機能する。これらの電流に伴うポロイダル磁場はX点を有する。電流駆動機構としてのECRHの使用は、これらの効果を増強し、トカマクの主半径の増大も同様にこれらの効果を増強する。

wiki

Electron cyclotron heatingCyclotron resonanceElectron cyclotron resonance
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