Facilities generating coherent X-rays tend to be large scale and costly. Now researchers have demonstrated a parametric and coherent laboratory-scale X-ray source by passing moderately energetic electrons through van der Waals heterostructures.

中文翻译：

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自由电子实验室相干X射线源

产生相干X射线的设施往往规模较大且成本较高。现在，研究人员通过使适度的高能电子穿过范德华异质结构，证明了参量和相干的实验室规模X射线源。