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Montel mirror based collimating analyzer system for high-pressure resonant inelastic X-ray scattering experiments

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Title
Montel mirror based collimating analyzer system for high-pressure resonant inelastic X-ray scattering experiments
Author(s)
J.-K. Kim; Diego Casa; Xianrong Huang,; Thomas Gog; Bumjoon Kim; Jungho Kim
Publication Date
2020-07
Journal
Journal of Synchrotron Radiation, v.27, pp.963 - 969
Publisher
Blackwell Publishing Inc.
Abstract
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. Furthermore, the energy resolution of different configurations of the collimating and analyzing optics are discussed.
URI
https://pr.ibs.re.kr/handle/8788114/12104
DOI
10.1107/S1600577520005792
ISSN
0909-0495
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > 1. Journal Papers (저널논문)
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