Chinese Optics Letters, 2017, 15 (3): 033401, Published Online: Jul. 25, 2018
Measurement of the spatial coherence of hard synchrotron radiation using a pencil beam Download: 948次
Abstract
We present a simple method to measure the spatial coherence of hard x-ray beams. Based on the convolution of Gaussian functions, we analyze the diffraction patterns of a grating irradiated by partially coherent hard x rays with a constrained beam diameter. The spatial coherence properties of an x-ray beam are obtained from the width of the diffraction peaks with high accuracy. The results of experiments conducted by combining a pinhole with a grating show a good agreement with our calculation using the Gaussian–Schell model.
Wenqiang Hua, Guangzhao Zhou, Yuzhu Wang, Ping Zhou, Shumin Yang, Chuanqian Peng, Fenggang Bian, Xiuhong Li, Jie Wang. Measurement of the spatial coherence of hard synchrotron radiation using a pencil beam[J]. Chinese Optics Letters, 2017, 15(3): 033401.