Radiochemical Analysis by High Sensitivity Dual-Optic Micro X-ray Fluorescence
Abstract
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 instrumentationmore »
- Authors:
- Publication Date:
- Research Org.:
- Los Alamos National Lab., Los Alamos, NM; X-ray Optical Systems, East Greenbush, NY (US)
- Sponsoring Org.:
- USDOE Office of Science (SC) (US)
- OSTI Identifier:
- 839100
- Report Number(s):
- EMSP-81967-2004
R&D Project: EMSP 81967; TRN: US0501609
- DOE Contract Number:
- FG07-01ER63280
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: PBD: 1 Jun 2004
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 54 ENVIRONMENTAL SCIENCES; DESIGN; EXCITATION; FLUORESCENCE; HIGH-LEVEL RADIOACTIVE WASTES; OPTICS; RADIATIONS; RADIOCHEMICAL ANALYSIS; SAVANNAH RIVER PLANT; SCREENS; SENSITIVITY; SPATIAL RESOLUTION; WASTES; X-RAY TUBES
Citation Formats
Havrilla, George J, and Gao, Ning. Radiochemical Analysis by High Sensitivity Dual-Optic Micro X-ray Fluorescence. United States: N. p., 2004.
Web. doi:10.2172/839100.
Havrilla, George J, & Gao, Ning. Radiochemical Analysis by High Sensitivity Dual-Optic Micro X-ray Fluorescence. United States. https://doi.org/10.2172/839100
Havrilla, George J, and Gao, Ning. 2004.
"Radiochemical Analysis by High Sensitivity Dual-Optic Micro X-ray Fluorescence". United States. https://doi.org/10.2172/839100. https://www.osti.gov/servlets/purl/839100.
@article{osti_839100,
title = {Radiochemical Analysis by High Sensitivity Dual-Optic Micro X-ray Fluorescence},
author = {Havrilla, George J and Gao, Ning},
abstractNote = {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.},
doi = {10.2172/839100},
url = {https://www.osti.gov/biblio/839100},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 01 00:00:00 EDT 2004},
month = {Tue Jun 01 00:00:00 EDT 2004}
}