Resonant inelastic x-ray scattering (RIXS)

Beamline 15-2 is a state-of-the-art undulator experimental station specializing in advanced hard x-ray spectroscopy. The end station features cutting-edge instrumentation, including a 7-crystal Johann spectrometer and an 8-crystal von Hamos instrument for sub-core hole lifetime resolution x-ray emission spectroscopy. It also houses high-throughput and high-energy-resolution x-ray Raman spectrometers with resolutions of 0.3 eV, optimized for both low-q (40-crystal) and high-q (30-crystal) scattering geometries.

Beamline 13-3, is dedicated to advancing research in quantum materials and diverse areas of materials science through resonant soft x-ray scattering (RSXS) and spectroscopy. Equipped with a spherical grating monochromator (SGM) and an elliptical polarizing undulator (EPU), the beamline provides full polarization control, including linear (vertical and horizontal) and circular (left and right) modes. Operating within a photon energy range of 250 eV to 1800 eV, it accesses key absorption edges such as the C, O, F, and Al K-edges, 3d transition metal L-edges, and 4f rare-earth M-edges.

BL13-2 is an elliptically polarizing undulator (EPU) beamline dedicated for high energy resolution soft x-ray core-level spectroscopy. Its endstation features a versatile chamber capable of characterizing numerous samples simultaneously. It is equipped to measure XAS in various modes including Total Electron Yield (TEY), Partial Electron Yield (PEY), Total Fluorescence Yield (TFY), and Partial Fluorescence Yield (PFY).

Beamline 6-2a is a wiggler-based versatile experimental station designed for high-energy-resolution spectroscopy in the tender x-ray range (1.6–5.0 keV). The station features a Johansson-type x-ray spectrometer operating on a Rowland geometry with cylindrical Johansson analyzers, enabling sub-natural linewidth energy resolution (~0.32 eV at 2400 eV). This instrument provides the unique capability of performing advanced spectroscopy (XES/HERFD-XAS/RIXS) studies for elements such as S, Cl, 4d metals, and 5f actinides.