Montel mirror based collimating analyzer system for high-pressure resonant inelastic X-ray scattering experiments
- Inst. for Basic Science (IBS), Pohang (Korea); Pohang Univ. of Science and Technology (Korea); Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Inst. for Basic Science (IBS), Pohang (Korea); Pohang Univ. of Science and Technology (Korea)
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 L3-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. Finally, the energy resolution of different configurations of the collimating and analyzing optics are discussed.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Research Foundation of Korea (NRF)
- Grant/Contract Number:
- AC02-06CH11357; 2018H1A2A1059958; IBS-R014-A2
- OSTI ID:
- 1660742
- Journal Information:
- Journal of Synchrotron Radiation (Online), Vol. 27, Issue 4; ISSN 1600-5775
- Publisher:
- International Union of CrystallographyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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