Kleymenov Evgeny, van Bokhoven Jeroen A, David Christian, Glatzel Pieter, Janousch Markus, Alonso-Mori Roberto, Studer Marco, Willimann Markus, Bergamaschi Anna, Henrich Beat, Nachtegaal Maarten
Paul Scherrer Institut, 5232 Villigen, Switzerland.
Rev Sci Instrum. 2011 Jun;82(6):065107. doi: 10.1063/1.3600452.
A Johann-type spectrometer with five spherically bent crystals and a pixel detector was constructed for a range of hard x-ray photon-in photon-out synchrotron techniques, covering a Bragg-angle range of 60°-88°. The spectrometer provides a sub emission line width energy resolution from sub-eV to a few eV and precise energy calibration, better than 1.5 eV for the full range of Bragg angles. The use of a pixel detector allows fast and easy optimization of the signal-to-background ratio. A concentration detection limit below 0.4 wt% was reached at the Cu Kα(1) line. The spectrometer is designed as a modular mobile device for easy integration in a multi-purpose hard x-ray synchrotron beamline, such as the SuperXAS beamline at the Swiss Light Source.
我们构建了一台带有五个球面弯曲晶体和一个像素探测器的约翰型光谱仪，用于一系列硬X射线光子进光子出的同步加速器技术，其布拉格角范围为60°至88°。该光谱仪提供了从亚电子伏特到几电子伏特的亚发射线宽能量分辨率以及精确的能量校准，在整个布拉格角范围内优于1.5电子伏特。像素探测器的使用使得信号与背景比能够快速且轻松地优化。在铜Kα(1)线处达到了低于0.4 wt%的浓度检测限。该光谱仪被设计为模块化移动设备，便于集成到多用途硬X射线同步加速器光束线中，例如瑞士光源的SuperXAS光束线。
