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Modified Mercier criterion

Franco Porcelli, Marshall N Rosenbluth1998年Plasma Physics and Controlled FusionIF 2.2出版社

The ideal magnetohydrodynamic Mercier criterion for the stability of localized interchange modes is easily violated by modest pressure gradients in the central region of a tokamak plasma where the magnetic winding index q drops below unity. However, kinetic effects can substantially modify this criterion, allowing for stable peaked pressure profiles. In this paper, we discuss the modifications to the Mercier criterion brought about by high-energy particles and by the thermal trapped ions in the collisionless Kruskal-Oberman regime.

日本語訳

理想的な磁気流体力学におけるMercier基準は、トカマクプラズマの中心領域で磁気巻き数qが1を下回る場合、そこでの緩やかな圧力勾配によって容易に破られ、局所的な交換型モードの安定性が損なわれる。しかし、運動論的効果はこの基準を大幅に修正し、安定なピーク状圧力分布を可能にすることができる。本論文では、高エネルギー粒子および無衝突Kruskal-Oberman領域における熱的捕捉イオンによって引き起こされるMercier基準の修正について考察する。

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