四种磁绝缘传输线的横向空间电荷流

根据电磁场基本理论及电子运动守恒方程，导出平板、圆柱、圆锥和圆盘这4种常用传输线的横向空间电荷流的数值模型和磁绝缘临界条件。通过数值模拟得到:传输线的电压越高，无磁场的横向空间电荷流越大，但是磁缘性能却越显著；若分别增大圆柱、圆锥的几何结构因子，既有助于减小它们的无磁场横向空间电荷流又有助于增强它们的磁绝缘性能；对于圆锥，若电极夹角较大，内电极的极角较小，则对减小无磁场空间电荷流和增强磁绝缘性也有一定好处。

Transverse space-charge flow in four magnetically insulated transmission lines

Electromagnetic field theory and electron motion conservation equations are used to derive numerical model of transverse space-charge flow and magnetically insulated critical condition in the four usual transmission lines: planes, cylinders, cones and discs. Through numerical simulation, the dependence of the transverse space-charge flow on the geometrical configurations parameters of the transmission lines is quantitatively obtained. The space-charge flow decreases as the geometrical factor increases for cylinders or as the geometrical factor and the angle between anode and cathode increase and the cathode polar angle decreases for cones. This work provides theoretical basis for engineering design.