Advanced Photon Source

An Office of Science National User Facility

11-ID-D

11-ID-D provides Time-Resolved X-ray absorption spectroscopy (TR-XAS) and X-ray scattering (TR-XS) to investigate multiple time- and length-scale structural dynamics underlying energy conversion processes in chemistry and materials sciences. TR-XAS and TR-XS use pulsed laser energy as an excitation source, then interrogates the system with stroboscopic X-ray pulse snapshots spanning the time domain from 80 ps to 1 ms. The scientific program at 11-ID-D focuses on the correlation between electronic and structural dynamics linked to molecular and interfacial electron transfer processes that are fundamental to energy conversion in a broad range of scientific disciplines, including solar energy conversion, catalysis, geochemistry, fuel cells, and electrochemical (battery) energy storage.  

Resources
Excitation Source - Two laser systems
5 picosecond laser system 1 KHz , 1053 nm fundamental  120 femtosecond laser system 3-10 KHz , 800 nm fundamental  OPA pumped with fs laser system: 3 KHz, 800 nm, 120 fs 5 picosecond laser system 1 KHz , 1053 nm fundamental
120 femtosecond laser system 3-10 KHz , 800 nm fundamental
Probe Source - Two Undulators

Two in-line undulators (U2.3 & U3.3) together with optimized beamline optics and a high heat load double crystal monochromator provide 11-ID-D with high-flux monochromatic X-ray beam ( > 1013 photons/s) tunable from 6 keV to 25 keV with a beam size of 50 – 200 μm (v) x 400 μm(h) and an energy bandwidth of 0.01%.

Techniques
Time-Resolved X-ray Absorption Spectroscopy (TR-XAS) Time Resolved X-Ray Scattering Time Resolved Grazing Incidence X-Ray Scattering

Time Resolved X-Ray Absorption Spectroscopy
(TR-XAS)

Time Resolved X-Ray Scattering
(TR-XS)

Time Resolved Grazing Incidence
X-Ray Scattering /X-Ray Absorption Spectroscopy

  • Oxidation state
  • Unoccupied electronic state
  • Number and species of neighbor atoms
  • Local geometric structure
  • Global electron density
  • Global shape
  • Movie with limited spatial resolution
  • Symmetry
  • Interfacial electron density
  • Symmetry at the interface
  • Roughness
  • Number of neighbors
Scientific Cases

Studying electronic and structural dynamics of  processes related to energy conversion and storage

Photochemistry and photophysics  of transition metal complexes
Catalysis and Fuel Cells
Photovoltaic solar cells
Time-resolved study of geochemistry