Instrumentation for time-resolved dispersive studies at Advanced Photon Source beamline 1-BM

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We describe progress in optics and instrumentation at beamline 1-BM, designed in part for time-resolved dispersive x-ray absorption fine structure (XAFS) measurements. The key optical element is a horizontally focusing curved-crystal monochromator that invokes a 4-point bending scheme and a liquid-metal cooling bath. The device has been designed for dispersive studies in the 5-24 keV range, with a horizontal focal spot size of {le}100 micrometers FWHM. To minimize thermal distortions and thermal equilibration time, the 355 {times} 32 {times} 0.8 mm crystal is nearly half submerged in a bath of Ga-In-Sn-Zn alloy, which thermally couples the crystal to the water-cooled ... continued below

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11 p.

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Brauer, S. & Rodricks, B. July 1996.

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Description

We describe progress in optics and instrumentation at beamline 1-BM, designed in part for time-resolved dispersive x-ray absorption fine structure (XAFS) measurements. The key optical element is a horizontally focusing curved-crystal monochromator that invokes a 4-point bending scheme and a liquid-metal cooling bath. The device has been designed for dispersive studies in the 5-24 keV range, with a horizontal focal spot size of {le}100 micrometers FWHM. To minimize thermal distortions and thermal equilibration time, the 355 {times} 32 {times} 0.8 mm crystal is nearly half submerged in a bath of Ga-In-Sn-Zn alloy, which thermally couples the crystal to the water-cooled Cu frame, while permitting the required crystal bending. Harmonic rejection, focusing schemes and the novel spectrometer positioning system will be described. For microsecond-resolution time-resolved studies, a fast CCD streak camera detector has been developed. Results from commissioning tests of the instrumentation are described. 11 refs., 4 figs.

Physical Description

11 p.

Notes

OSTI as DE96014878

Source

  • 9. international conference on x-ray absorption fine structure (XAFS), Genoble (France), 26-30 Aug 1996

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  • Other: DE96014878
  • Report No.: ANL/XFD/CP--90770
  • Report No.: CONF-9608104--6
  • Grant Number: W-31-109-ENG-38
  • DOI: 10.2172/393292 | External Link
  • Office of Scientific & Technical Information Report Number: 393292
  • Archival Resource Key: ark:/67531/metadc687255

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • July 1996

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  • July 25, 2015, 2:20 a.m.

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  • Feb. 2, 2016, 3:55 p.m.

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Brauer, S. & Rodricks, B. Instrumentation for time-resolved dispersive studies at Advanced Photon Source beamline 1-BM, report, July 1996; Illinois. (digital.library.unt.edu/ark:/67531/metadc687255/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.