skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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 » could be capable of on-line analysis for process waste stream characterization at DOE sites.« less

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}
}