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Classical diffusion of a plasma in toroidal systems

O.P. Pogutse1970年被引用 17Nuclear FusionIF 3出版社

The author considers the effects of plasma rotation on classical diffusion in toroidal systems. Within the framework of the hydrodynamic description of a plasma it is shown that, if the pressure gradient is not too great (ρ/a ≪ Bθ/Bz, where ρ is the ion Larmor radius, a−1 = d ln p/dr, Bθ is the azimuthal field and Bz the longitudinal field), then there is only one direction in which the plasma column can rotate with a velocity of the order of the drift velocity and at the same time become negatively charged – the diffusion coefficients differing only by a numerical factor of the order of unity from those previously known. It is also shown that there occurs in the plasma a transverse electric field which is much stronger than the Pfirsch-Schluter field and the direction of which depends on the path length of the particles.

日本語訳

著者は、トーラス系における古典拡散に対するプラズマ回転の影響を考察する。プラズマの流体力学的記述の枠組みにおいて、圧力勾配が大きすぎない場合(ρ/a ≪ Bθ/Bz、ここでρはイオン・ラーマー半径、a−1 = d ln p/dr、Bθは方位角方向磁場、Bzは縦磁場)、プラズマ柱がドリフト速度程度の速度で回転し、同時に負に帯電し得る方向はただ一つのみであり、拡散係数は既知のものとは1程度の数値因子のみが異なることが示される。また、プラズマ中にピュルシュー・シュリューター磁場よりもはるかに強い横電場が発生し、その方向は粒子の行程長に依存することも示される。

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