In this manuscript, characterization of single‐crystalline (111) plates prepared from type‐Ib diamonds with a nitrogen content of 100–150 ppm by means of high‐resolution rocking‐curve imaging (RCI) is reported. Contrary to common opinion regarding the intrinsically poor diffraction quality of type‐I diamonds, RCI showed the presence of nearly defect‐free areas of several millimetres squared in the central part of the diamond plates. The observed broadening of the rocking curves is a result of the cutting and polishing processes, causing strains around the edges of the plates and rare defects. An improvement of the preparation technique will thus allow single‐crystalline diamond plates to be made for Laue and Bragg monochromators and beam splitters from type‐Ib material with areas large enough to be used as optical elements at fourth‐generation synchrotron facilities.

中文翻译：

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走向用于X射线光学器件的高质量氮掺杂金刚石单晶

在此手稿中，报告了通过高分辨率摇摆曲线成像（RCI）对由含氮量为100-150 ppm的Ib型钻石制备的单晶（111）平板进行表征的过程。与关于I型钻石本质上较差的衍射质量的普遍看法相反，RCI显示在钻石板的中心部分存在几平方毫米的几乎无缺陷的区域。观察到的摇摆曲线变宽是切割和抛光过程的结果，导致板边缘周围产生应变并出现罕见缺陷。