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Rotating field current drive in spherical plasmas

D Brotherton-Ratcliffe, R G Storer1988年Plasma Physics and Controlled FusionIF 2.2出版社

The technique of driving a steady Hall current in plasmas using a rotating magnetic field is studied both numerically and analytically in the approximation of negligible ion flow. The authors consider a spherical plasma bounded by an insulating wall and immersed in a uniform magnetic field which has both a rotating component (for current drive) and a constant 'vertical' component (for MHD equilibrium). They formulate the problem in terms of an expansion of field quantities in vector spherical harmonics. The numerical code SPHERE solves the resulting pseudo-harmonic equations by a multiple shooting technique. The results presented, in addition to being relevant to non-inductive current drive generally, have a direct relevance to the rotamak experiments.

日本語訳

回転磁場を用いてプラズマ中に定常ホール電流を駆動する手法を、イオン流が無視できる近似の下で数値的および解析的に研究する。著者らは、絶縁壁に囲まれた球状プラズマが、回転成分(電流駆動用)と定常成分(MHD平衡用)の両方を有する一様磁場中に置かれた場合を考察する。この問題は、ベクトル球面調和関数による場の量の展開を用いて定式化される。数値コードSPHEREは、多重シューティング法により得られる擬調和方程式を解く。提示された結果は、非誘導電流駆動一般に関連するだけでなく、ロータマク実験にも直接的な関連性を持つ。

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