Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Versatile USAXS (Bonse-Hart) Facility for Advanced Materials Research



J Ilavsky, P Jemain, Andrew J. Allen, Gabrielle G. Long


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 charactrization of nanometer-scale to micrometer-scale microstructures. Receiving photons from an APS Undulator A X-ray source, the instrument delivers approximately equal to} 1013 ph s-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 = 4π/λ sin [theta}, λ is the photon wavelength, and 2 θ is the angle of scatter) from 0.0001 Angstrom}-1 to 1 Angstrom}-1, 9 decades of detector intensity range, absolute intensity calibration by primary methods, fluorescence rejection in the scattered beam, excellent energy resolution (Δ}λ / λ) for anomalous USAXS, and a miximum unfocused beam size of 0.4 mm x 2.5 mm, with spatial resolution down to 20 υm. 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.
Proceedings Title
Proceedings of the SRI 2003 Conference
Conference Dates
August 24-29, 2003
Conference Location
Conference Title
SRI Conference


collimator, reflections, SAXS, small-angle x-ray scattering, ultra-small-angle x-ray scattering, USAXS


Ilavsky, J. , Jemain, P. , Allen, A. and Long, G. (2017), Versatile USAXS (Bonse-Hart) Facility for Advanced Materials Research, Proceedings of the SRI 2003 Conference, Undefined (Accessed April 13, 2024)
Created February 19, 2017