Among the factors affecting the effect of the treatment, magnetic field density is the most remarkable one, with the frequency comes second.

在影响处理效果的因素中，磁场强度最大，频率次之。

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A approximately sine waveform air-gap magnetic field density can be gained based on the analysis of the whole electromagnetic field. The results are helpful to optimization design and control.

通过分析得到整个电机电磁场的分布及波形近似为正弦的气隙磁感应强度，分析结果有助于对电机进行优化设计和控制。

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The RF method shortens the ion extraction time, and increases the ion extraction efficiency. It can also control the plasma density by changing the magnetic field.

共振法缩短了离子引出时间，提高了离子引出效率，并且可以通过对外加磁场的调节来控制等离子体密度。

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