位于钻石光源的 I11 光束线：一台用于高分辨率粉末衍射的新仪器。
Beamline I11 at Diamond: a new instrument for high resolution powder diffraction.
作者信息
Thompson S P, Parker J E, Potter J, Hill T P, Birt A, Cobb T M, Yuan F, Tang C C
机构信息
Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom.
出版信息
Rev Sci Instrum. 2009 Jul;80(7):075107. doi: 10.1063/1.3167217.
The performance characteristics of a new synchrotron x-ray powder diffraction beamline (I11) at the Diamond Light Source are presented. Using an in-vacuum undulator for photon production and deploying simple x-ray optics centered around a double-crystal monochromator and a pair of harmonic rejection mirrors, a high brightness and low bandpass x-ray beam is delivered at the sample. To provide fast data collection, 45 Si(111) analyzing crystals and detectors are installed onto a large and high precision diffractometer. High resolution powder diffraction data from standard reference materials of Si, alpha-quartz, and LaB6 are used to characterize instrumental performance.
介绍了钻石光源上新的同步加速器X射线粉末衍射光束线（I11）的性能特征。利用真空中的波荡器产生光子，并采用以双晶单色仪和一对谐波抑制镜为核心的简单X射线光学元件，在样品处提供了高亮度和低带通的X射线束。为了实现快速数据采集，在一台大型高精度衍射仪上安装了45块Si(111)分析晶体和探测器。利用来自硅、α-石英和LaB6标准参考材料的高分辨率粉末衍射数据来表征仪器性能。
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