BL4-1 is an unfocused beam line dedicated to x-ray absorption spectroscopy measurements in the hard x-ray energy range (~5.5-38 keV). Equipment includes a 13-element detector, Lytle detector, and available LHe or LN cryostats. Applications include mainly MEIS, chemistry, catalysis and materials science.
| Status | Open |
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| Type | X-ray |
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| Source | 20-pole, 2.0-Tesla Wiggler, 0.75 mrad, side station |
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| Energy Range | 6500-30000 eV |
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| % Time General Use | 100% |
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| Supported Techniques | |||||||||||||
| Main Scientific Disciplines | |||||||||||||
| Beam Line Specifications | |||||||||||||
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| Optics | M0 mirror: Flat, bent vertically collimating, 1 m, Si, Rh-coated, cutoff 9-23 keV, LN2-cooled monochromator. Energies over 22keV are run with the mirror out. |
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| Monochromator | Si(220) f=0° or Si(220) f=90° double-crystal, non-fixed exit slit Monochromator Crystal Glitch Library Crystal changes need to be scheduled and coordinated in advance with BL support staff. |
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| Detector | |||||||||||||
| Sample Environment | |||||||||||||
| Absorption | N/A |
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| Instrumentation | Varies: Standard EXAFS rail, Lytle and Ge array fluorescence detectors. Inquire about special needs. |
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| Data Acquisition and Analysis | Data Aquisition: XAS-Collect |
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| Additional Notes | |||||||||||||
| Beam Line Staff | |||||||||||||
| Beam Line Phone | 650-926-5241. On-site Users: Contact the Duty Operator at 9-926-4040 |
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| Engineering Notes | |||||||||||||
| Resource Links | |||||||||||||
| Resource Documents | |||||||||||||
