电磁成像的相对论方法
Relativistic approach to electromagnetic imaging
摘要：
提出了一种基于相对论电子束与电磁波相互作用的成像原理。波粒相互作用被假定发生在一个小的空间域中，因此每个电子只被入射场短暂地加速。在一维情况下，源密度的空间分布可以直接在散射场的时间谱中观察到。而在二维情况下，源与谱之间的关系近似为Radon变换。
英文摘要：
A novel imaging principle based on the interaction of electromagnetic waves with a beam of relativistic electrons is proposed. Wave-particle interaction is assumed to take place in a small spatial domain, so that each electron is only briefly accelerated by the incident field. In the one-dimensional case the spatial distribution of the source density can be directly observed in the temporal spectrum of the scattered field. Whereas, in the two-dimensional case the relation between the source and the spectrum is shown to be approximately the Radon transform.
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