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MHD stable regime of the Tokamak

C Z Cheng, H P Furth, A H Boozer1987年Plasma Physics and Controlled FusionIF 2.2出版社

A broad family of Tokamak current profiles is found to be stable against ideal and resistive MHD king modes for 1<or=q(0), with q(a) as low as 2. For 0.5<or=q(0)<1 and q(a)>1, current profiles can be found that are unstable only to the m=1, n=1 mode. A specific 'optimal' Tokamak profile can be selected from the range of stable solutions, by imposing a common upper limit on dj/dr-corresponding in ohmic equilibrium to a limitation of dT3/dr by anomalous transport.

日本語訳

広範なトカマク電流分布のファミリーは、1<q(0)(q(a)は2程度まで低い)に対して、理想および抵抗性MHDモードに対して安定であることが見出された。0.5<q(0)<1かつq(a)>1の場合、m=1、n=1モードのみに対して不安定な電流分布が見出され得る。特定の「最適な」トカマク分布は、dj/drに共通の上限を課すことによって、安定な解の範囲から選択することができる——これはオーミック平衡において、異常輸送によるdT³/drの制限に対応する。

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Magnetohydrodynamics
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