Actions for Radiochemical Analysis by High Sensitivity Dual-Optic Micro X-ray Fluorescence [electronic resource].

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Radiochemical Analysis by High Sensitivity Dual-Optic Micro X-ray Fluorescence [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Science, 2004.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
vp : digital, PDF file
Additional Creators
Los Alamos National Laboratory, United States. Department of Energy. Office of Science, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
A novel dual-optic micro X-ray fluorescence instrument will be developed to do radiochemical analysis of high-level radioactive wastes at DOE sites such as Savannah River Site and Hanford. This concept incorporates new X-ray optical elements such as monolithic polycapillaries, which focus X-rays. The polycapillary optic can be used to focus X-rays emitted by the X-ray tube thereby increasing the X-ray flux on the sample over 1000 times. The polycapillary optic will also be used to collect the X-rays from the excitation site. This will effectively screen the radiation background from the radioactive species in the specimen. This dual-optic approach significantly reduces the background and increases the analyte signal thereby increasing the sensitivity of the analysis. This dual-capillary design is essentially a confocal (having the same foci) design, i.e. the detected X-rays are only emitted from the overlap of the two focal spots. This increases spatial resolution and reduces background. The integration of the X-ray optics increases the signal-to-noise and thereby increases the sensitivity of the analysis for low-level analytes. This work will address a key need for radiochemical analysis of high-level waste using a non-destructive, multi-element, and rapid method in a radiation environment. There is significant potential that this instrumentation could be capable of on-line analysis for process waste stream characterization at DOE sites.
Report Numbers
E 1.99:emsp-81967--2004
emsp-81967--2004
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
06/01/2004.
"emsp-81967--2004"
Havrilla, George J.; Gao, Ning.
Type of Report and Period Covered Note
Annual; 10/01/2003 - 09/01/2004
Funding Information
FG07-01ER63280
EMSP 81967
View MARC record | catkey: 14139891