A von Hamos full-cylindrical spectrometer based on striped Si/Ge crystal for advanced x-ray spectroscopy
| العنوان: | A von Hamos full-cylindrical spectrometer based on striped Si/Ge crystal for advanced x-ray spectroscopy |
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| المؤلفون: | Zhiying Guo, Yujun Zhang, Wei Xu, ShuoXue Jin, Xiaolong Gan, Han Zhang, Dongliang Chen, Quanjie Jia |
| المصدر: | Review of Scientific Instruments. 94:023102 |
| بيانات النشر: | AIP Publishing, 2023. |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Instrumentation |
| الوصف: | High-energy resolution core-level spectroscopies, including a group of different techniques to obtain element-specific information of the electronic structure around an absorption site, have become powerful tools for studying the chemical state, local geometric structure, and the nature of chemical bonding. High-resolution x-ray absorption and x-ray emission spectroscopies are well-established experimental techniques but have always been limited by the number of emitted photons and the limited acceptance of solid angles, as well as requiring high energy stability and repeatability for the whole experimental setup. A full-cylindrical x-ray spectrometer based on flexible HAPG (highly annealed pyrolitic graphite) mosaic crystals is an effective solution for the above issues. However, large-area HAPG remains expensive and is often not easy to access. Here, we present an alternative approach by using segmented single crystals (Si and Ge) with different orientations instead of the HAPG as a dispersive element. The proposed method drastically improved the energy resolution up to 0.2–2 eV in the range of 2–10 keV. High-pressure x-ray emission and resonant x-ray emission spectra are presented to demonstrate the capabilities of the instrument. The new design is particularly suitable for high-resolution spectroscopy applications at fourth-generation synchrotron radiation sources or free-electron lasers. |
| تدمد: | 1089-7623 0034-6748 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::7c5c97303ec2c04e2eff730b42c1e76f https://doi.org/10.1063/5.0133896 |
| رقم الأكسشن: | edsair.doi...........7c5c97303ec2c04e2eff730b42c1e76f |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Scitation. | تدمد: | 10897623 00346748 |
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