Montel mirror based collimating analyzer system for high-pressure resonant inelastic X-ray scattering experiments
| Autor: | Xianrong Huang, Thomas Gog, Diego Casa, Jungho Kim, Bumjoon Kim, Jin-Kwang Kim |
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| Rok vydání: | 2020 |
| Předmět: |
Nuclear and High Energy Physics
Spectrum analyzer Radiation Materials science Spectrometer Scattering business.industry Resolution (electron density) Diamond 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Collimated light Resonant inelastic X-ray scattering Optics 0103 physical sciences engineering 010306 general physics 0210 nano-technology business Instrumentation Excitation |
| Zdroj: | Journal of synchrotron radiation. 27(Pt 4) |
| ISSN: | 1600-5775 |
| Popis: | Resonant inelastic X-ray scattering (RIXS) is increasingly playing a significant role in studying highly correlated systems, especially since it was proven capable of measuring low-energy magnetic excitations. However, despite high expectations for experimental evidence of novel magnetic phases at high pressure, unequivocal low-energy spectral signatures remain obscured by extrinsic scattering from material surrounding the sample in a diamond anvil cell (DAC): pressure media, Be gasket and the diamond anvils themselves. A scattered X-ray collimation based medium-energy resolution (∼100 meV) analyzer system for a RIXS spectrometer at the Ir L 3-absorption edge has been designed and built to remediate these difficulties. Due to the confocal nature of the analyzer system, the majority of extrinsic scattering is rejected, yielding a clean low-energy excitation spectrum of an iridate Sr2IrO4 sample in a DAC cell. Furthermore, the energy resolution of different configurations of the collimating and analyzing optics are discussed. |
| Databáze: | OpenAIRE |
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