A highly oriented pyrolytic graphite crystal spectrometer in von Hamos geometry for x-ray fluorescence experiments. (15th February 2021)

• Record Type: Journal Article
• Authors: Yang, Zhihao; Zhang, Zhiyu; Lv, Min; Hu, Zhimin; An, Zhu; Wei, Minxi; Zhao, Yang; Yang, Jiamin
• Is Part Of: Measurement science & technology. Volume 32:Number 4(2021)
• Publication Date: 2021-02-15
• Subjects: crystal spectrometer -- fluorescence spectroscopy -- von Hamos -- HOPG; Physical measurements -- Periodicals; Scientific apparatus and instruments -- Periodicals; Equipment and Supplies -- Periodicals; Science -- instrumentation -- Periodicals; Technology -- instrumentation -- Periodicals; Mesures physiques -- Périodiques; Physical measurements; Scientific apparatus and instruments; Periodicals; 502.87
• DOI: 10.1088/1361-6501/aba459
• Languages: English
• ISSNs: 0957-0233

Abstract

Abstract: A high-resolution x-ray spectrometer has been designed and constructed, using a highly oriented pyrolytic graphite Bragg crystal in von Hamos geometry. The spectrometer was designed to study x-ray fluorescence emissions of Ti, and it covers a detecting energy range from 4000 eV to 5500 eV. The factors affecting the spectral resolution and efficiency of the spectrometer were discussed. In particular, the bending of the spectral lines on the image plate was also corrected, due to the detecting plane not being parallel to the axis of the cylindrically curved crystal. Its performance has been evaluated in a laser–foil interaction experiment. The experimental results indicate that the spectrometer is of good spectral resolution and relatively high efficiency, which enables it as a suitable device for the measurements of high-resolution x-ray fluorescence spectroscopy.