The double-crystal configuration is useful for the evaluation of strain and defects in single crystals. In this study, rocking curve measurements by X-ray topography in the double-crystal configuration were demonstrated using perfect crystals of the protein glucose isomerase (GI). The setup enables precise evaluation of perfection in protein crystals with the nearly nondispersive X-ray optics. It reveals the uniform perfection of GI crystals according to the theory of X-ray diffraction. It is expected that unknown imperfections in various protein crystals of lower quality will be revealed by the nondispersive configuration using perfect protein crystals.

中文翻译：

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双晶结构中非色散 X 射线光学器件对高质量蛋白质晶体的摇摆曲线成像

双晶结构可用于评估单晶中的应变和缺陷。在这项研究中，使用蛋白质葡萄糖异构酶 (GI) 的完美晶体证明了双晶构型中的 X 射线拓扑结构的摇摆曲线测量。该设置可以使用几乎非色散的 X 射线光学器件精确评估蛋白质晶体的完美程度。它根据 X 射线衍射理论揭示了 GI 晶体的均匀完美性。预计使用完美蛋白质晶体的非分散配置将揭示各种质量较低的蛋白质晶体中的未知缺陷。