Beam line 6-2b is a wiggler end-station dedicated to High Resolution Hard X-ray Spectroscopy. The end station combines three multicrystal Johann spectrometers that enable X-ray Emission Spectroscopy (XES), Resonant Inelastic X-ray Scattering (RIXS), High-Energy Resolution Fluorescence Detected X-ray Absorption Spectroscopy (HERFD-XAS) and X-ray Raman Spectroscopy (XRS) techniques. The ambient pressure operation of the end-station provides high flexibility in implementing various sample environments (in-situ, cryogenic, He-atmosphere, furnaces, liquids, high pressurized cells, etc.). A dedicated LHe cryostat allows for routine low temperature measurements. End station is operating with a focused x-ray beam of ~0.15x0.4 (VxH) mm2 and a flux of 2x1013 (4x1012) when a Si(111) or Si(311) monochromator is used, respectively.
| Status | Off-Line |
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| Supported Techniques | X-ray absorption spectroscopy imaging |
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| Main Scientific Disciplines | Bioscience Catalysis Environmental Sciences Materials Sciences Physics |
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| Beam Line Specifications | ||||||||||||||||
SourceSource: 56-pole, 0.9-Tesla wiggler, End Station, 1.2 mrad acceptance.
OpticsM0 mirror: Bent flat single-crystal Si, Rh coated 10-18.2 keV cutoff, vertically collimating M1 mirror: Bent cylindrical single-crystal Si, Rh coated, standard focus Monochromator: LN2 cooled, Si(111), ϕ = 0o , Si(311), ϕ = 0o. double-crystal. Absorption127 μm Be |
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| Instrumentation | 7-crystal analyzer spectrometer for XES, RXES, RIXS, IXS (available analyzers: http://www-ssrl.slac.stanford.edu/xraywiki/xraywiki.php?n=BeamLine06.AnalyzerCrystal) 40-crystal analyzer spectrometer for IXS at low momentum transfer and 14-crystal analyzer spectrometer for IXS at high momentum transfer Detectors: Silicon-based, single element Vortex solid-state. Cryostat: Oxford LHe cryostat (4-200 K) Other: Integrated shutter system and variable filters to alleviate radiation damage. Beamline Layout: http://www-ssrl.slac.stanford.edu/xraywiki/xraywiki.php?n=BeamLine06.BeamLine062 7-crystal spectrometer (http://dx.doi.org/10.1063/1.4803669), 40-crystal and 14-crystal spectrometers (http://dx.doi.org/10.1063/1.4704458) |
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| Sample Environment | Ambient pressure experiments, He chamber(s), flexibility with various in-situ setups, liquid samples, high pressure. Dedicated LHe cryostat (4-200 K). Minimum sample requirement (in terms of concentration): Depends strongly on the technique and the scientific question. Please contact responsible scientific staff for guidance. |
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| Data Acquisition and Analysis | SPEC, PyMCA, Matlab. |
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| Beam Line Phone | 650-926-5262. On-site Users: Contact the Duty Operator at 9-926-4040 |
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| Beam Line Contact | ||||||||||||||||
