Zverev D, Snigireva I, Sorokovikov M, Yunkin V, Kuznetsov S, Snigirev A
Opt Express. 2021 Oct 25;29(22):35038-35053. doi: 10.1364/OE.434656.
A coherent X-ray beam expander based on a multilens interferometer is proposed in this paper. The multilens interferometer allows efficient generation of a highly diverging coherent beam up to several milliradians in the hard X-ray energy range. The optical properties of the interferometer were experimentally demonstrated at the ESRF ID13 undulator beamline (Grenoble, France), using 12.4 keV X-rays. The beam expander allowed us to control the angular size and photon flux density of the formed beam and enabled operation in both coherent and incoherent modes. The experimental results were fully consistent with the theoretical concepts and appropriate computer simulations. Future design improvements and related applications are also discussed.
本文提出了一种基于多透镜干涉仪的相干X射线光束扩展器。多透镜干涉仪能够在硬X射线能量范围内高效产生发散角高达几毫弧度的高发散相干光束。利用12.4 keV的X射线，在法国格勒诺布尔欧洲同步辐射装置的ID13波荡器光束线对该干涉仪的光学特性进行了实验验证。该光束扩展器使我们能够控制所形成光束的角尺寸和光子通量密度，并能在相干和非相干模式下运行。实验结果与理论概念及适当的计算机模拟完全一致。还讨论了未来的设计改进及相关应用。
