A versatile Johansson-type tender x-ray emission spectrometer.

Area of Science:

• Materials Science
• Spectroscopy
• Synchrotron Radiation

Background:

• High energy resolution X-ray spectroscopy is crucial for materials characterization.
• Existing instruments often face limitations in resolution or sample environment versatility.

Purpose of the Study:

• To design and demonstrate a novel high-resolution X-ray spectrometer for the tender X-ray regime.
• To achieve subnatural line-width energy resolution for versatile in situ measurements.

Main Methods:

• Development of a spectrometer based on Rowland geometry with cylindrically bent Johansson analyzers.
• Integration of a position-sensitive detector and a versatile sample chamber within a vacuum environment.
• Operation in an energy-dispersive mode with sample placement inside the Rowland circle.

Main Results:

• Achieved subnatural line-width energy resolution of approximately 0.32 eV at 2400 eV.
• Demonstrated performance with an extended incident X-ray beam across a wide range of diffraction angles (30°–65°).
• Enabled versatile sample environments including solid, gas, liquid, in situ cells, and radioactive materials.

Conclusions:

• The developed spectrometer offers unprecedented energy resolution in the tender X-ray range.
• Its versatile sample environment facilitates advanced in situ studies.
• The instrument is well-suited for detailed investigations in materials science and related fields.