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Control of the motion of the ions in rotating magnetic field currentdrive: 1. Steady-state analysis

W N Hugrass2000年Plasma Physics and Controlled FusionIF 2.2出版社

The equations describing current drive in an infinitely long plasmacylinder by means of two counter-rotating transverse magnetic fields aresolved neglecting the second and higher harmonics. The existence ofsteady-state solutions where both rotating magnetic fields (RMFs) penetrateinto the plasma much farther than the skin depth is verified. Thesesteady-state solutions admit a special case where the RMFs are of equalfrequency and magnitude, and can thus be implemented using an oscillatingtransverse magnetic field. The slip of the ion fluid with respect to theRMF is required to be extremely small (of order me/mi). Theaccessibility of these steady states from possible initial conditions isnot investigated.

日本語訳

無限に長いプラズマ円筒内における、2つの逆回転する横磁場を用いた電流駆動を記述する方程式は、第2高調波およびそれ以上の高調波を無視して解かれる。両方の回転磁場(RMF)が表皮深さよりもはるかに深くプラズマに浸透するような定常解の存在が検証される。これらの定常解は、RMFが同一の周波数と大きさを持つ特別な場合を含み、したがって振動する横磁場を用いて実現できる。RMFに対するイオン流体のすべりは、極めて小さい(me/miのオーダー)ことが要求される。可能な初期条件からのこれらの定常状態への到達可能性は調査されていない。

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