IRIXS：一种专门用于中能区X射线的共振非弹性X射线散射仪器。
IRIXS: a resonant inelastic X-ray scattering instrument dedicated to X-rays in the intermediate energy range.
作者信息
Gretarsson Hlynur, Ketenoglu Didem, Harder Manuel, Mayer Simon, Dill Frank Uwe, Spiwek Manfred, Schulte-Schrepping Horst, Tischer Markus, Wille Hans Christian, Keimer Bernhard, Yavaş Hasan
机构信息
Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany.
Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, D-22607 Hamburg, Germany.
出版信息
J Synchrotron Radiat. 2020 Mar 1;27(Pt 2):538-544. doi: 10.1107/S1600577519017119. Epub 2020 Feb 26.
A new resonant inelastic X-ray scattering (RIXS) instrument has been constructed at beamline P01 of the PETRA III synchrotron. This instrument has been named IRIXS (intermediate X-ray energy RIXS) and is dedicated to X-rays in the tender-energy regime (2.5-3.5 keV). The range covers the L absorption edges of many of the 4d elements (Mo, Tc, Ru, Rh, Pd and Ag), offering a unique opportunity to study their low-energy magnetic and charge excitations. The IRIXS instrument is currently operating at the Ru L-edge (2840 eV) but can be extended to the other 4d elements using the existing concept. The incoming photons are monochromated with a four-bounce Si(111) monochromator, while the energy analysis of the outgoing photons is performed by a diced spherical crystal analyzer featuring (102) lattice planes of quartz (SiO). A total resolution of 100 meV (full width at half-maximum) has been achieved at the Ru L-edge, a number that is in excellent agreement with ray-tracing simulations.
一台新的共振非弹性X射线散射（RIXS）仪器已在佩特拉III同步加速器的P01光束线上建成。该仪器被命名为IRIXS（中能X射线能量RIXS），专门用于软X射线能区（2.5 - 3.5 keV）的研究。这个能量范围涵盖了许多4d元素（钼、锝、钌、铑、钯和银）的L吸收边，为研究它们的低能磁激发和电荷激发提供了独特的机会。IRIXS仪器目前在钌L边（2840 eV）运行，但利用现有的设计理念可扩展到其他4d元素。入射光子通过四反射Si(111)单色仪进行单色化，而出射光子的能量分析则由一块切割后的球形晶体分析仪完成，该分析仪采用石英（SiO）的（102）晶格平面。在钌L边已实现了100 meV（半高宽）的总分辨率，这一数值与光线追踪模拟结果高度吻合。
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