Small Angle X-Ray Scattering Detector

Patent · Tue Jun 15 04:00:00 EDT 2004

OSTI ID:879843

Hessler, Jan P ^[1]

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1. Downers Grove, IL

A detector for time-resolved small-angle x-ray scattering includes a nearly constant diameter, evacuated linear tube having an end plate detector with a first fluorescent screen and concentric rings of first fiber optic bundles for low angle scattering detection and an annular detector having a second fluorescent screen and second fiber optic bundles concentrically disposed about the tube for higher angle scattering detection. With the scattering source, i.e., the specimen under investigation, located outside of the evacuated tube on the tube's longitudinal axis, scattered x-rays are detected by the fiber optic bundles, to each of which is coupled a respective photodetector, to provide a measurement resolution, i.e., dq/q, where q is the momentum transferred from an incident x-ray to an x-ray scattering specimen, of 2% over two (2) orders of magnitude in reciprocal space, i.e., q.sub.max /q.sub.min.congruent.100.

• Research Organization: Argonne National Laboratory
• DOE Contract Number: W-31109-ENG-38
• Assignee: The United States of America as represented by the United States Department of Energy (Washington, DC)
• Patent Number(s): US 6751288
• Application Number: 10/261657
• OSTI ID: 879843
• Country of Publication: United States
• Language: English