Chen Guang, Chu Shengqi, Sun Tianxi, Sun Xuepeng, Zheng Lirong, An Pengfei, Zhu Jian, Wu Shurong, Du Yonghua, Zhang Jing
Institute of Health Sciences, Anhui University, Hefei 230601, People's Republic of China.
Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
J Synchrotron Radiat. 2017 Sep 1;24(Pt 5):1000-1005. doi: 10.1107/S1600577517010207. Epub 2017 Aug 10.
A confocal fluorescence endstation for depth-resolved micro-X-ray absorption spectroscopy is described. A polycapillary half-lens defines the incident beam path and a second polycapillary half-lens at 90° defines the probe sample volume. An automatic alignment program based on an evolutionary algorithm is employed to make the alignment procedure efficient. This depth-resolved system was examined on a general X-ray absorption spectroscopy (XAS) beamline at the Beijing Synchrotron Radiation Facility. Sacrificial red glaze (AD 1368-1644) china was studied to show the capability of the instrument. As a mobile endstation to be applied on multiple beamlines, the confocal system can improve the function and flexibility of general XAS beamlines, and extend their capabilities to a wider user community.
描述了一种用于深度分辨微X射线吸收光谱的共聚焦荧光终端站。一个聚束半透镜定义了入射光束路径，而一个成90°角的第二个聚束半透镜定义了探针样品体积。采用基于进化算法的自动对准程序以使对准过程高效。在北京同步辐射装置的一条通用X射线吸收光谱（XAS）束线上对这个深度分辨系统进行了检测。对明代（公元1368 - 1644年）祭红釉瓷器进行了研究，以展示该仪器的性能。作为一种可应用于多条束线的移动终端站，该共聚焦系统可以改善通用XAS束线的功能和灵活性，并将其能力扩展到更广泛的用户群体。
