Experimental Station 2-2

Beam line 2-2 is a bending magnet side-station beam line for x-ray absorption spectroscopy, Quick-EXAFS, and EXAFS measurements of samples with absorption edges in the energy range 4.5 - 37 keV. BL2-2 is equipped with a water-cooled double crystal monochromator, with multiple crystal sets available [Si(111), Si(220)]. Available detectors include ionization chambers, Lytle, 13-element Ge array, and Vortex detectors. Specialized facilities for in-situ catalysis research include gas handling systems and mass flow control.  The beam line sees limited use for white beam experiments.

Status
Open
Supported Techniques
X-ray Absorption Spectroscopy
In-situ Catalysis
Main Scientific Disciplines
Bioscience
Catalysis
Energy Science
Materials Sciences
Beam Line Specifications

Source

Bend Magnet, Side Station, 0.4 mrad acceptance

  Energy Range Resolution ΔE/E Spot Size Flux
Unfocused 5000 to 37000 eV N/A 3.0 x 15.0 mm2 N/A

 

Optics

Monochromator: water cooled, double-crystal, non-fixed exit slit, multiple crystals sets available.

Absorption

673 microns Be, 12.4 meters He, 15.2 microns C

Instrumentation

Detectors: ionization chambers, Lytle, Vortex, 13-element Ge array detector.

Cryostat: Oxford LHe cryostat, LN2 cryostat

Facilities: Flammables gas cabinet with mass flow controllers to enable gas handling for catalytic applications.

Sample Environment

Ambient pressure and a variety of in-situ reactor cells.

Data Acquisition and Analysis

WebXAS, EXAFSPAK, SixPAK

Beam Line Phone
650-926-5222. On-site Users: Contact the Duty Operator at 9-926-4040
Beam Line Contact

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