Allen, A.
, Levine, L.
, Zhang, F.
, Long, G.
, Ilavsky, J.
and Jemian, P.
(2012),
High-energy Ultra-Small Angle X-ray Scattering Instrument at the Advanced Photon Source, Journal of Applied Crystallography, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=911966
(Accessed October 7, 2024)
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High-energy Ultra-Small Angle X-ray Scattering Instrument at the Advanced Photon Source
Published
Author(s)
, , , , Jan Ilavsky, Pete R. Jemian
Abstract
This paper reports recent tests performed on the Bonse-Hart-type ultra-small angle X-ray scattering (USAXS) instrument at the Advanced Photon Source with higher-order reflection optics Si (440) instead of Si (220) and with X-ray energies greater than 21.0 keV. Our results demonstrate the feasibility of high-energy operation with narrower crystal reflectivity curves, which provides access to a scattering vector range from ≈ 2 × 10-5 to 1.8 Å-1 and up to 12 decades in the associated sample dependent scattering intensity range. The corresponding size range of the scattering features spans about 5 decades from less than 1 Å to ≈ 30 μm. These tests have indicated that mechanical upgrades are required to ensure the alignment capability and operational stability of this instrument for general user operations due to the tighter angular-resolution constraints of the higher-order crystal optics. These upgrades are now underway.Citation
Journal of Applied Crystallography
Volume
45
Pub Type
Journals
Download Paper
Keywords
Bonse-Hart ultra-small-angle X-ray scattering instrument, USAXS, Ultra-high SAXS resolution
Citation
Issues
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Created December 1, 2012, Updated February 19, 2017