The Ultra-Small-Angle X-Ray Scattering Instrument on UNICAT at the APS

Published

October 1, 2000

Author(s)

Gabrielle G. Long, Andrew J. Allen, J Ilavsky, P R. Jemian, P Zchack

Abstract

A new ultra-small-angle X-ray scattering (USAXS) instrument has been commissioned as part of the UNICAT facility on the 33-ID line at the Advanced Photon Source. The instrument offers continuously-tunable optics for anomalous USAXS, 1000 times the throughput of earlier USAXS instrument ^1,2, high sensitivity and high resolution at low scattering vector, and a scattering vector range from below 0.00015 -1 to above 0.5 -1. Early results include USAXS from colloidal silica suspensions, and anomalous USAXS from rare-earth oxides in the prescence of similarly-sized cavities in silicon nitride. The addition of side-reflection optics, in an optional configuration of this instrument, enables USAXS measurements of anisotropic as well as isotropic materials.

Proceedings Title

Synchrotron Radiation Instrumentation, US National Conference | 11th | | American Institute of Physics (AIP)

Conference Dates

October 12-15, 1999

Conference Title

AIP Conference Proceedings

Pub Type

Conferences

Keywords

anomalous scattering, ultra-small-angle scattering, x-ray scattering

Citation

Long, G. , Allen, A. , Ilavsky, J. , Jemian, P. and Zchack, P. (2000), The Ultra-Small-Angle X-Ray Scattering Instrument on UNICAT at the APS, Synchrotron Radiation Instrumentation, US National Conference | 11th | | American Institute of Physics (AIP) (Accessed October 22, 2025)