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Stability of ideal MHD ballooning modes and its stabilization by toroidal rotation shear near separatrix

M Furukawa, S Tokuda, M Wakatani2004年Plasma Physics and Controlled FusionIF 2.2出版社

In the H-mode (high-confinement mode) pedestal region of a static or a toroidally rotating D-shaped tokamak plasma, the separatrix or the X-point affects the high-n ballooning stability (n: toroidal mode number) only in a thin layer in the pedestal region. Therefore, D-shaping effectively stabilizes the ballooning modes even for a toroidally rotating plasma with a separatrix.

日本語訳

Hモード(高閉じ込めモード)ペデスタル領域において、静的またはトロイダル回転するD型断面トカマクプラズマでは、セパラトリックスまたはX点は、ペデスタル領域の薄い層のみにおいて高nバルーニング安定性(n:トロイダルモード数)に影響を与える。したがって、D型断面形状は、セパラトリックスを有するトロイダル回転プラズマにおいても、バルーニングモードを効果的に安定化する。

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MagnetohydrodynamicsBallooning modeToroidal rotationIdeal MHD
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