Computer Science
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5535..783r&link_type=abstract
Developments in X-Ray Tomography IV. Edited by Bonse, Ulrich. Proceedings of the SPIE, Volume 5535, pp. 783-791 (2004).
Computer Science
2
Scientific paper
A facility for x-ray computed microtomography (CMT) is operating as a national user facility for earth and environmental sciences research on the bending magnet beamline at the GeoSoilEnviroCARS sector at the Advanced Photon Source (APS). The APS bending magnet has a critical energy of 20 keV, and thus provides high flux at photon energies up to 100 keV, making it well suited to imaging a wide range of earth materials up to several cm in size. The beamline is equipped with a Si (111) double-crystal monochromator covering the energy range from 5 to 70 keV with beam sizes up to 50mm wide and 6mm high. The transmitted x-rays are imaged with a single crystal YAG scintillator, a microscope objective and a 1300x1030 pixel 12-bit 5MHz CCD detector. The maximum spatial resolution is under 2 microns in both the transmission radiographs and the reconstructed slices. Data collection times for full 3-D datasets range from 5-60 minutes. This facility has been used for a wide range of studies, including multiphase fluids in porous media, high-pressure studies, meteorites, and hyper-accumulating plants.
Rivers Mark L.
Uchida Takeyuki
Wang Yanbin
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