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Self-consistent magnetic field and integrals of plasma motion

J. Lacina1966年被引用 1Nuclear FusionIF 3出版社

A general solution of the Vlasov equation for the stationary axisymmetric distribution function of charged particles in plasma, together with a self-consistent solution of the Maxwell equations. is found and physically interpreted.The orthogonal natural system of coordinates of a magnetic field jointly with magnetic induction B and the integrals of motion are first determined. The spatial dependence of the resultant magnetic field is discussed in considerable detail and criteria for the existence of minimum-B are established. It is indicated that currents in plasma itself create configurations with a minimum-B on the axis of symmetry under the following necessary and sufficient exact conditions. (1) There must exist a minimum value of B in the longitudinal direction at r = z = 0 (mirror field): (2) It must be, at r = z = 0, that –(4π/c) (∂iφ/∂r)> ½∂2B/∂z2, where r, φ, z are the cylindrical coordinates, and iφ the electric current in the plasma.

日本語訳

プラズマ中の荷電粒子の定常軸対称分布関数に対するVlasov方程式の一般解は、Maxwell方程式の自己無撞着解とともに見出され、物理的に解釈される。磁場の直交自然座標系が、磁束密度Bおよび運動の積分とともに、最初に決定される。結果として得られる磁場の空間依存性はかなり詳細に論じられ、最小Bの存在基準が確立される。プラズマ自体の電流が、以下の必要十分な正確な条件の下で、対称軸上に最小Bを持つ配位を生成することが示される。(1) r = z = 0 において、縦方向に B の最小値が存在しなければならない(ミラー磁場)。(2) r = z = 0 において、–(4π/c) (∂iφ/∂r) > ½∂2B/∂z2 でなければならない。ここで r, φ, z は円筒座標であり、iφ はプラズマ中の電流である。

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