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.

中文翻译：

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基于Montel镜的准直分析仪系统，用于高压共振非弹性X射线散射实验

共振非弹性X射线散射（RIXS）在研究高度相关的系统中扮演着越来越重要的角色，特别是因为它已被证明能够测量低能量的磁激发。然而，尽管人们对高压下新型磁性相的实验证据寄予厚望，但明确的低能光谱特征仍然被金刚石砧座单元（DAC）中样品周围材料的外在散射所掩盖：压力介质，Be垫片和金刚石砧座他们自己。散射X射线准直基于中等能量分辨率（〜100兆电子伏）分析器系统用于RIXS分光计在IR大号₃吸收边缘的设计和制造可以弥补这些困难。由于分析仪系统的共聚焦特性，大部分非本征散射被拒绝，从而在DAC单元中产生了铱酸盐Sr ₂ IrO ₄样品的干净的低能激发光谱。此外，讨论了准直和分析光学器件不同配置的能量分辨率。