Versatile USAXS (Bonse-Hart) facility for advanced materials research

Conference · Wed Feb 21 04:00:00 EST 2007

OSTI ID:1008943

Ilavsky, J; Jemian, P R; Allen, A J; Long, G G

The USAXS facility at UNICAT Sector 33 at the Advanced Photon Source (APS) is a world-class resource for advanced materials research emphasizing full-range characterization of nanometer-scale to micrometer-scale microstructures. Receiving photons from an APS Undulator A X-ray source, the instrument delivers {approx} 10{sup 13} ph s{sup -1} incident in a 0.4 mm x 2.5 mm area at the sample position for 10 keV photons, has an incident photon energy range from 7 keV to 19 keV, a single-scan Q range (where Q = 4{pi}/{lambda} sin {theta}, {lambda} is the photon wavelength, and 2{theta} is the angle of scatter) from 0.00012 {angstrom}{sup -1} to 1 {angstrom}{sup -1}, over 10 decades of detector intensity range, absolute intensity calibration by primary methods, fluorescence rejection in the scattered beam, excellent energy resolution ({Delta}{lambda}/{lambda}) for anomalous USAXS, and a maximum unfocused beam size of 0.4 mm x 2.5 mm, with useful beams as small as 20 {micro}m x 20 {micro}m. The facility offers semi-automated data reduction, rapid and rigorous data analysis using state-of-the-art structure factors and models, and radiographic and USAXS-imaging. Both 1-D collimated (slit-smeared configuration) and 2-D collimated configurations are routinely available. Ongoing development of this facility continues in an active partnership between the instrument scientists and the user community.

• Research Organization: Advanced Photon Source (APS), Argonne National Laboratory (ANL), Argonne, IL (US)
• Sponsoring Organization: USDOE
• OSTI ID: 1008943
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

43 PARTICLE ACCELERATORS
ADVANCED PHOTON SOURCE
CALIBRATION
CONFIGURATION
DATA ANALYSIS
ENERGY RANGE
ENERGY RESOLUTION
FLUORESCENCE
PHOTONS
STRUCTURE FACTORS
SYNCHROTRON RADIATION
WIGGLER MAGNETS
X-RAY SOURCES