Project Title: Radiochemical Analysis by High Sensitivity Dual-Optic Micro X-ray Fluorescence
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 reduce s 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.
- Research Organization:
- Los Alamos National Laboratory, Los Alamos, NM; X-Ray Optical Systems, East Greenbush, Ny (US)
- Sponsoring Organization:
- USDOE Office of Science (SC) (US)
- DOE Contract Number:
- FG07-01ER63280
- OSTI ID:
- 835002
- Report Number(s):
- EMSP-81967-2003; R&D Project: EMSP 81967; TRN: US0407417
- Resource Relation:
- Other Information: PBD: 1 Jun 2003
- Country of Publication:
- United States
- Language:
- English
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Project Title: Radiochemical Analysis by High Sensitivity Dual-Optic Micro X-ray Fluorescence
Radiochemical Analysis by High Sensitivity Micro X-Ray Fluorescence Detection
Related Subjects
54 ENVIRONMENTAL SCIENCES
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
DESIGN
EXCITATION
FLUORESCENCE
HIGH-LEVEL RADIOACTIVE WASTES
OPTICS
RADIATIONS
RADIOCHEMICAL ANALYSIS
SAVANNAH RIVER PLANT
SCREENS
SENSITIVITY
SPATIAL RESOLUTION
WASTES
X-RAY TUBES