Resonant inelastic X-ray scattering using a miniature dispersive Rowland refocusing spectrometer

Area of Science:

• Spectroscopy
• Materials Science
• Synchrotron Radiation

Background:

• Growing demand for full photon-in/photon-out X-ray spectroscopies (RIXS, RXES, HERFD-XAS) necessitates adaptable emission spectrometers.
• Previous miniature DRR spectrometer showed promise for non-resonant X-ray emission spectroscopy (XES) in laboratory settings.
• Matching spectrometer choice to beamline capabilities is crucial for advanced X-ray absorption spectroscopy (XAS) studies.

Purpose of the Study:

• To extensively evaluate the performance of a miniature DRR spectrometer at an unfocused synchrotron beamline.
• To explore the feasibility of resonant X-ray studies using this spectrometer design.
• To assess the suitability of the DRR method for radiation-sensitive materials.

Main Methods:

• Utilized a miniature dispersive Rowland refocusing (DRR) spectrometer.
• Conducted experiments at an unfocused wiggler synchrotron beamline.
• Performed resonant X-ray emission spectroscopy studies.

Main Results:

• Demonstrated high-energy resolution performance of the DRR spectrometer at a synchrotron beamline.
• Enabled resonant X-ray studies previously impossible in laboratory settings.
• Confirmed the DRR spectrometer's effectiveness with unfocused synchrotron beams.

Conclusions:

• The miniature DRR spectrometer design is suitable for broader synchrotron-based resonant X-ray spectroscopy.
• The DRR method with unfocused beams is advantageous for analyzing materials with low radiation damage thresholds.
• This approach expands the applicability of advanced X-ray emission spectroscopy techniques.