Anklamm Lars, Schlesiger Christopher, Malzer Wolfgang, Grötzsch Daniel, Neitzel Michael, Kanngießer Birgit
Institute for Optic and Atomic Physics, Technical University Berlin, Hardenbergstr. 36, 10623 Berlin, Germany.
Rev Sci Instrum. 2014 May;85(5):053110. doi: 10.1063/1.4875986.
We present a novel, highly efficient von Hamos spectrometer for X-ray emission spectroscopy (XES) in the laboratory using highly annealed pyrolitic graphite crystals as the dispersive element. The spectrometer covers an energy range from 2.5 keV to 15 keV giving access to chemical speciation and information about the electronic configuration of 3d transition metals by means of the Kβ multiplet. XES spectra of Ti compounds are presented to demonstrate the speciation capabilities of the instrument. A spectral resolving power of E/ΔE = 2000 at 8 keV was achieved. Typical acquisition times range from 10 min for bulk material to hours for thin samples below 1 μm.
我们展示了一种新型、高效的冯哈莫斯光谱仪，用于实验室中的X射线发射光谱（XES），它使用高度退火的热解石墨晶体作为色散元件。该光谱仪的能量范围为2.5 keV至15 keV，通过Kβ多重峰可获取化学形态信息以及有关3d过渡金属电子构型的信息。给出了钛化合物的XES光谱，以展示该仪器的形态分析能力。在8 keV处实现了E/ΔE = 2000的光谱分辨能力。典型的采集时间范围从块状材料的10分钟到厚度小于1μm的薄样品的数小时不等。
