Near infrared reflectance spectroscopy as a process signature in uranium oxides
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Publication Details
Output type: Journal article
Author list: Plaue JW, Klunder GL, Hutcheon ID, Czerwinski KR
Publisher: Springer
Publication year: 2013
Journal: Journal of Radioanalytical and Nuclear Chemistry (0236-5731)
Volume number: 296
Issue number: 1
Start page: 551
End page: 555
Number of pages: 5
ISSN: 0236-5731
eISSN: 1588-2780
Languages: English-Great Britain (EN-GB)
Unpaywall Data
Open access status: green
Full text URL: https://digital.library.unt.edu/ark:/67531/metadc842375/m2/1/high_res_d/1090824.pdf
Abstract
Near-infrared (NIR) reflectance spectroscopy was examined as a potential tool for the determination of forensic signatures indicative of the chemical process history of uranium oxides. The ability to determine the process history of nuclear materials is a desired, but underdeveloped, area of technical nuclear forensics. Application of the NIR technique potentially offers a quick and non-destructive tool to serve this need; however, few data have been published on the compounds of interest. The viability of NIR was investigated through the analysis of a combination of laboratory-derived and real-world uranium precipitates and oxides. A set of reference uranium materials was synthesized in the laboratory using the commonly encountered aqueous precipitation reactions for uranium ore concentration and chemical separation processes (ammonia, hydrogen peroxide, sodium hydroxide, ammonium carbonate, and magnesia). NIR spectra were taken on a range of samples heat treated in air between 85 and 750 A degrees C. X-ray diffraction patterns were also obtained to complement the NIR analysis with crystal phase information. Similar analyses were performed using a set of real-world samples, with process information obtained from the literature, to provide a comparison between materials synthesized in the laboratory and samples representative of industrial processes.
Keywords
Near-infrared reflectance spectroscopy, NIR, Nuclear forensics, Uranium ore concentrate, Uranium oxide, Yellowcake
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