Synopsis

ID26 is dedicated to X-ray absorption and emission spectroscopy. The high-brilliance X-ray beam allows for absorption studies on very dilute samples. X-ray emission spectroscopy is performed by means of a crystal spectrometer.

IMPORTANT: ID26 will be refurbished during the second half of 2026. The beamline is closed for user operation during this period. It will re-open for user operation in March 2027.

Disciplines

• Chemistry
• Materials and Engineering
• Physics
• Environmental Sciences
• Earth and Planetary Sciences
• Life Sciences
• Medicine
• Cultural Heritage

Applications

• Catalysis
• Coordination Chemistry
• Materials science
• Energy storage
• Earth science
• Environmental science
• Biology

Techniques

• EXAFS - extended X-ray absorption fine structure
• HERFD XAS - high energy resolution fluorescence detected XAS
• RIXS - resonant inelastic X-ray scattering
• XANES - X-ray absorption near-edge structure
• XAS - X-ray absorption spectroscopy
• XES - X-ray emission spectroscopy
• RXES - resonant X-ray emission spectroscopy
• XAFS - X-ray absorption fine structure
• XMCD - X-ray magnetic circular dichroism

Sample environments

• Gas distribution system with mass flow controllers
• He-flow cryostat (15 K)
• Gas chromatograph mass spectrometry
• FT-IR
• See also ESRF sample environment group

Detectors

• Canberra photo diodes
• 5-analyzer hard x-ray emission spectrometer
• 11-analyzer tender x-ray emission spectrometer
• Single-element silicon drift detector

Technical details

Specifically, the beamline offers high energy resolution fluorescence detected (HERFD) XAS, range-extended EXAFS, (non-)resonant XES, and RIXS. The resolving power (solid angle) of the spectrometer can be varied between 2500 (0.15sr) and 20000 (0.01sr) by adjusting the analyzer crystal bending radius. The detection limit may be below a monolayer (0.01 mM, 100 ppb) for XANES studies depending on analyte and matrix. Various furnaces, cryostats and in-situ cells from the ESRF sample environment pool can be mounted.

[1] Coord. Chem. Rev. 249 65-95 (2005). [2] Eur Phys J-Spec Top 169 207-214 (2009). [3] J. Am. Chem. Soc. 131 13161-13167 (2009). [4] Journal of the American Chemical Society 132 2555-2557 (2010). [5] Physical Review Letters 105 037202 (2010).