Ding X, Xie J, He Y, Pan Q, Yan Y
Institute of Low Energy Nuclear Physics, Beijing Radiation Center, Beijing Normal University, Beijing 100875, PR China.
Talanta. 2000 Oct 2;53(1):17-22. doi: 10.1016/s0039-9140(00)00387-8.
Polycapillary X-ray optics (capillary X-ray lens) are now popular in X-ray fluorescence (XRF) analysis. Such an X-ray lens can collect X-rays emitted from an X-ray source in a large solid angle and form a very intense X-ray microbeam which is very convenient for microbeam X-ray fluorescence (MXRF) analysis giving low minimum detection limits (MDLs) in energy dispersive X-ray fluorescence (EDXRF). A new method called position sensitive X-ray spectrometry (PSXS) which combines an X-ray lens used to form an intense XRF source and a position sensitive detector (PSD) used for wavelength dispersive spectrometry (WDS) measurement was developed recently in the X-ray Optics Laboratory of Institute of Low Energy Nuclear Physics (ILENP) at Beijing Normal University. Such a method can give high energy and spacial resolution and high detection efficiency simultaneously. A short view of development of both the EDXRF using a capillary X-ray lens and the new PSXS is given in this paper.
多毛细管X射线光学元件（毛细管X射线透镜）目前在X射线荧光（XRF）分析中很受欢迎。这种X射线透镜可以在大立体角内收集从X射线源发射的X射线，并形成非常强的X射线微束，这对于微束X射线荧光（MXRF）分析非常方便，在能量色散X射线荧光（EDXRF）中能给出很低的最低检测限（MDL）。最近，北京师范大学低能核物理研究所（ILENP）的X射线光学实验室开发了一种新方法，称为位置敏感X射线光谱法（PSXS），它结合了用于形成强XRF源的X射线透镜和用于波长色散光谱法（WDS）测量的位置敏感探测器（PSD）。这种方法可以同时提供高能量和空间分辨率以及高检测效率。本文简要介绍了使用毛细管X射线透镜的EDXRF和新的PSXS的发展情况。
