放电为磁场激励型，稳定的等离子体由电磁场所维持，空间电荷产生的静电场引起荷电粒子的双极扩散。
A steady state plasma is maintained by electromagnetic field and ambipolar diffusion of charged particles is caused by electrostatic field of space charge.
在翻转期间，磁场保持它的双极子外形，保留了古磁学家一直能够追踪南极踪迹的现象。
And during the transition, the field retains its dipole shape, a phenomenon paleomagnetists have traced all the way to the south pole.
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