Five-analyzer Johann spectrometer for hard X-ray photon-in/photon-out spectroscopy at the Inner Shell Spectroscopy...

Area of Science:

• Materials Science
• Atomic and Molecular Physics
• Chemistry

Background:

• Inner shell spectroscopy provides critical data on electronic and geometric structures.
• Advanced instrumentation is needed to achieve higher resolution and efficiency in X-ray analysis.

Purpose of the Study:

• To present a newly commissioned five-analyzer Johann spectrometer at the National Synchrotron Light Source II (NSLS-II).
• To detail the design, alignment, and data acquisition of this hard X-ray photon-in/photon-out spectrometer.

Main Methods:

• Commissioning of a five-analyzer Johann spectrometer at the 8-ID beamline.
• Implementation of a continuous asynchronous data-acquisition scheme.
• Characterization of the spectrometer's performance for hard X-ray spectroscopy.

Main Results:

• The spectrometer achieves a resolution of 0.5–2 eV for hard X-ray photon-in/photon-out spectroscopy.
• The continuous asynchronous data acquisition significantly enhances experimental efficiency.
• The instrument provides detailed insights into the local electronic and geometric structure of materials.

Conclusions:

• The new spectrometer is a valuable tool for a diverse user community across physical, chemical, biological, environmental, and materials sciences.
• The developed data acquisition method represents a significant advancement in experimental efficiency for X-ray spectroscopy.