Beamline 20-BM-B: X-ray Absorption Spectroscopy
X-ray Science Division, APS
Materials Science, Environmental Science, Chemistry
Description
General purpose x-ray spectroscopy beamline with multiple detection and sample environment capabilities. A toroidal focusing mirror is standard to 32 keV. Unfocused the energy range increases to 35 keV. Variable-angle harmonic-rejection mirror can also focus vertically to 30 micron. A polycapillary optic can provide a high flux 25 micron focus.
We are currently accepting mail-in samples that require minimal onsite preparation. In-situ measurements require close coordination with beamline staff and on-site experimental support from user group.
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Supported Techniques
- X-ray absorption fine structure
Beamline Controls and Data Acquisition
Windows 10 with LabView.
Detectors
- Ionization chambers
- 13-element Ge
- Pilatus 100K
- Eiger 500K
- Vortex Si Drift (single and 4 element)
- NaI scintillation
- Si diodes
- Log spiral fluorescence detector
- Optical spectrometer
Additional Equipment
- Displex low temperature stage (20-300K)
- K-B mirror for 5 micron (by special request)
- Polycapillary for 25 micron
- Mass spectrometer and catalyst cells
- Time-resolved x-ray excited optical luminescence (XEOL)
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Local Contacts
Beamline Specs
Source |
Bending Magnet |
Monochromator Type |
Si(111) |
Energy Range |
3.9-32 keV |
Resolution (ΔE/E) |
1.4 x 10 -4 |
Flux (photons/sec) |
1 x 10 11 @10 keV |
Beam Size (HxV) |
Focused |
200µm x 500µm
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Monochromator Type |
Si(111) |
Energy Range |
3.9-35 keV |
Resolution (ΔE/E) |
1.4 x 10 -4 |
Flux (photons/sec) |
2 x 10 10 @10 keV |
Beam Size (HxV) |
Focused |
10000µm x 30µm
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Unfocused |
10mm x 1mm
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Monochromator Type |
Si(111) |
Energy Range |
3.9-35 keV |
Resolution (ΔE/E) |
1.4 x 10 -4 |
Flux (photons/sec) |
3 x 10 10 @10 keV |
Beam Size (HxV) |
Focused |
25µm x 25µm
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For additional information see:
https://spc.xray.aps.anl.gov/
Current Status:
Commissioning
Access Mode:
On-site
Remote
Mail-in
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