| Primary Contact: Name | Ritimukta Sarangi |
| Secondary Contact: Name | Matthew Latimer |
| Owner/Operator | SSRL-SMB-XAS |
| Status | Operational |
| Status Details | Open |
| %Time Available (general use) | 100 |
| Experiments | XAS |
| Experiments Details | Beam line 7-3 is a wiggler side-station beam line dedicated for X-ray absorption spectroscopy and EXAFS measurements on dilute biological systems. BL7-3 is equipped with a 30-element Ge solid-state detector in addition to ionization chambers and Lytle detectors. A dedicated liq-He cryostat allows for routine low temperature measurements. The unfocused beam is ideal for samples especially susceptible to radiation damage, such as high-valent intermediates and other oxidized species. |
| Special Capabilities | Absorption Edges |
| Special Capabilities Details | Low temperature XAS measurements on radiation sensitive samples. |
| Source Type | INSERTION DEVICE |
| Source Details | 20-pole, 2-Tesla wiggler - Acceptance up to 1.0 mrad |
| Spot Size (mm): Height | Variable; max 2 |
| Spot Size (mm): Width | Variable; max 20 |
| Monochromator | Liquid nitrogen-cooled double crystal, non-fixed exit slit |
| Crystal Type | Si(220), 2 phi orientations, LN2 cooled |
| Mirrors | M0: Si, vertically collimating, flat, bent,1 m, Rh-coated |
| Flux(PHOTONS/SEC) | 1 x 10^12 |
| Flux Details | |
| Wavelength Range (Å) | info not available |
| Energy Range (keV) | 5 - 30 |
| Detector: Type | 30-element Ge solid state array; Lytle detector; PIPS detector, ion chambers |
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| Detector: Model | Canberra |
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| Detector: Activated for Service | info currently not available |
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| Detector: Removed from Service | |
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| Cryo Capability | Oxford CF1208 continuous flow liquid helium cryostat |
| Cryo Capability Details | 10-200 K |
| Lab Facilities | Sample preparation laboratory, cold room, glove boxes |
| Software: Name | ICS (instrumentation control); XAS Collect (acquisition, Ge30Plus (detector setup), SRS570 (amplifier control), EXAFSPAK (analysis) |
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| Software: Classification | Control, data acquisition, analysis |
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