NDLI: A multi-method approach for determination of radionuclide distribution in trinitite

Content Provider	Springer Nature Link
Author	Wallace, Christine Bellucci, Jeremy J. Simonetti, Antonio Hainley, Tim Koeman, Elizabeth C. Burns, Peter C.
Copyright Year	2013
Abstract	The spatial distribution of radiation within trinitite thin sections have been mapped using alpha track radiography and beta autoradiography in combination with optical microscopy and scanning electron microscopy. Alpha and beta maps have identified areas of higher activity, and these are concentrated predominantly within the surficial glassy component of trinitite. Laser ablation-inductively coupled plasma mass spectrometry (LA-ICP-MS) analyses conducted at high spatial resolution yield weighted average $^{235}$U/$^{238}$U and $^{240}$Pu/$^{239}$Pu ratios of 0.00718 ± 0.00018 (2σ) and 0.0208 ± 0.0012 (2σ), respectively, and also reveal the presence of some fission ($^{137}$Cs) and activation products ($^{152,154}$Eu). The LA-ICP-MS results indicate positive correlations between Pu ion signal intensities and abundances of Fe, Ca, U and $^{137}$Cs. These trends suggest that Pu in trinitite is associated with remnants of certain chemical components from the device and surrounding Trinity test-related structures at ground zero. In contrast, negative correlations between Pu ion signals and SiO$_{2}$ and K$_{2}$O contents were observed within the glassy matrix of trinitite. This LA-ICP-MS result was corroborated by combined back-scattered electron imaging and alpha radiography, and indicates that Pu was not incorporated into unmelted crystalline grains of precursor minerals (i.e., quartz-SiO$_{2}$ and K-feldspar-KAlSi$_{3}$O$_{8}$) present within the desert sand at the Trinity site. The results from this study indicate that the device-related radionuclides were preferentially incorporated into the glassy matrix in trinitite.
Starting Page	993
Ending Page	1003
Page Count	11
File Format	PDF
ISSN	02365731
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume Number	298
Issue Number	2
e-ISSN	15882780
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-04-13
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Trinitite Nuclear forensics Radionuclides Fission and activation products Laser ablation inductively coupled plasma mass spectrometry Nuclear Chemistry Physical Chemistry Nuclear Physics, Heavy Ions, Hadrons Diagnostic Radiology Inorganic Chemistry
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Pollution Health, Toxicology and Mutagenesis Radiology, Nuclear Medicine and Imaging Analytical Chemistry Public Health, Environmental and Occupational Health Nuclear Energy and Engineering

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