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Collisional limits of resonant and neoclassical transport in tandem mirrors

Ronald H. Cohen, W.M. Nevins, G.V. Stupakov1982年被引用 12Nuclear FusionIF 3出版社

Neoclassical and resonant transport in tandem mirrors is considered in the limit where the collision frequency νc exceeds the bounce frequency νb for solenoid ions. Approximate expressions for the diffusion coefficient are obtained analytically and verified by using a random walk code. These expressions scale as νc, (νc/νd)1/2 νb, or νb depending on the value of the azimuthal drift frequency νd. The connection to regimes of lower collisionality is described. In particular, for neoclassical transport (νd/νb≪1) at moderate collisionality, a mechanism previously described but not generally known leads to a term in the diffusion coefficient which scales as νc and allows smooth matching to the high-collisionality regime.

日本語訳

タンデムミラーにおける新古典輸送および共鳴輸送を、ソレノイドイオンについて衝突周波数νcがバウンス周波数νbを超える極限で考察する。拡散係数の近似式を解析的に導出し、ランダムウォークコードを用いて検証する。これらの式は、方位角ドリフト周波数νdの値に応じて、νc、(νc/νd)1/2 νb、またはνbに比例してスケーリングする。より低い衝突性の領域への接続についても述べる。特に、中程度の衝突性における新古典輸送(νd/νb≪1)では、これまでに記述されたが広くは知られていない機構が、νcに比例してスケーリングする拡散係数の項をもたらし、高衝突性領域への滑らかな接続を可能にする。

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Tandem mirrorNeoclassical transport
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