Transient electromagnetic field plays very important roles in the evolution of high-energy-density matter or laser plasma. Now, a new design is proposed in this paper to diagnose the transient magnetic field, using relativistic electron bunch as a probe based on high-energy electron radiography. And based on this scheme, the continuous distribution of magnetic strength field can be snapshotted. For 1 mm thick quadrupole magnet model measured by 50 MeV probe electron beams, the simulation result indicates that this diagnosis has spatial resolution better than 4 microns and high measurement accuracy for strong magnetic strength and high magnetic gradient field no matter whether the magnetic interaction is focusing or defocusing for the range from -510 T ∗ μm to 510 T ∗ μm.

中文翻译：

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超快高能电子射线照相在磁场精细结构测量中的应用

瞬态电磁场在高能量密度物质或激光等离子体的演化中起着非常重要的作用。现在，本文提出了一种新的设计来诊断瞬态磁场，使用相对论电子束作为基于高能电子射线照相的探针。并且基于该方案，可以对磁场强度场的连续分布进行快照。对于由 50 MeV 探测电子束测量的 1 mm 厚四极磁体模型，