SuperXAS - X10DA
SuperXAS is a dedicated beamline for X-ray absorption spectroscopy (XAS) and X-ray emission spectroscopy (XES) with enhanced chemical sensitivity and time resolution. The beamline offers flexible sample environments for in situ studies of catalysts and other functional materials.
Experiment types:
- XAS using ionization chambers for transmission detection and a 5-element or a thick sensor silicon drift detector (SDD) for fluorescence detection
- Quick scanning XAS (QEXAFS) using ionization chambers for transmission detection with ms to minute time resolution O.Mueller et al. J. Synchrotron Rad., 2016, 23, 260
- High resolution XES using von Hamos-type spectrometer (for time-resolved XES and RXES) J.Szlachetko et al. Rev.Sci.Inst.,2012,83,1031105 and Johann-type spectrometer in combination with a SDD detector (for valence-to-core XES) E.Kleymenov et al. Rev.Sci.Inst.,2011,82,065107
- Pump-sequential-probes XAS in the time range 30ns-100 µs G.Smolentsev et al. Farad. Diss., 2014, 171, 279, pump-flow-probe XAS in the time range 50 µs – 1ms G.Smolentsev et al. JPCC, 2013, 117, 17367 and time-resolved measurements in the fluorescence mode with 20ms resolution. Several laser systems are available lasers
- Sample environments: in situ cells, anoxic sample chamber with liquid jet, cryostat and cryojet, heat guns, mass flow controllers, mass spectrometer (for detail contact beamline responsible)
| Energy range | 4.5 - 35 keV |
| Flux on sample | 1 x 1012 ph/s at 12 keV |
| Spot size on sample± | 100 x 100 µm2 to 5 x 0.5 mm2 |
| Intrinsic energy resolution (ΔE/E) | 2.0 x 10-4 for Si(111) 0.5 x 10-4 for Si(311) |