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由于磁矩进动时阻尼作用的存在 ,脉冲磁场在金属材料中所产生的磁通量一般滞后于场 ,从而使穿过金属材料的脉冲磁场相位滞后 .对于非铁磁性金属材料 ,这种相位滞后非常微弱 ,而且由于趋肤效应和涡流的影响 ,阻尼作用导致的相位滞后难以观测 .给出了一种在有金属镀膜的陶瓷真空盒中测量这种相位滞后的实验方法及结果 .这种方法采用超薄、有绝缘条纹的隔离分区镀膜技术 ,在测量中适当选择测量点的位置 ,因而将趋肤效应和涡流的影响降低到最小 .同时对实验测量结果进行了理论分析
Due to the damping effect of magnetic moment precession, the magnetic flux generated by the pulsed magnetic field in the metallic material generally lags behind the field so that the pulsed magnetic field passing through the metallic material lags in phase. For non-ferromagnetic metallic materials, this phase lag is very large And the phase lag caused by the damping effect is hard to observe due to the skin effect and the eddy current.The experimental method and the result of measuring this phase lag in a ceramic-coated ceramic vacuum box are given.This method uses Slim, insulated stripe isolation partition coating technology, in the measurement of the appropriate choice of measuring point position, thus the skin effect and eddy current impact to a minimum. At the same time, the experimental results of a theoretical analysis