Arid
DOI10.1007/s10967-013-2497-8
A multi-method approach for determination of radionuclide distribution in trinitite
Wallace, Christine; Bellucci, Jeremy J.; Simonetti, Antonio; Hainley, Tim; Koeman, Elizabeth C.; Burns, Peter C.
通讯作者Wallace, Christine
来源期刊JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
ISSN0236-5731
EISSN1588-2780
出版年2013
卷号298期号:2页码:993-1003
英文摘要

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 U-235/U-238 and Pu-240/Pu-239 ratios of 0.00718 +/- A 0.00018 (2 sigma) and 0.0208 +/- A 0.0012 (2 sigma), respectively, and also reveal the presence of some fission (Cs-137) and activation products (Eu-152,Eu-154). The LA-ICP-MS results indicate positive correlations between Pu ion signal intensities and abundances of Fe, Ca, U and Cs-137. 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 SiO2 and K2O 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-SiO2 and K-feldspar-KAlSi3O8) 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.


英文关键词Trinitite Nuclear forensics Radionuclides Fission and activation products Laser ablation inductively coupled plasma mass spectrometry
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000325624300032
WOS关键词DEBRIS
WOS类目Chemistry, Analytical ; Chemistry, Inorganic & Nuclear ; Nuclear Science & Technology
WOS研究方向Chemistry ; Nuclear Science & Technology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/178650
作者单位Univ Notre Dame, Dept Civil & Environm Engn & Earth Sci, Notre Dame, IN 46556 USA
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GB/T 7714
Wallace, Christine,Bellucci, Jeremy J.,Simonetti, Antonio,et al. A multi-method approach for determination of radionuclide distribution in trinitite[J],2013,298(2):993-1003.
APA Wallace, Christine,Bellucci, Jeremy J.,Simonetti, Antonio,Hainley, Tim,Koeman, Elizabeth C.,&Burns, Peter C..(2013).A multi-method approach for determination of radionuclide distribution in trinitite.JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY,298(2),993-1003.
MLA Wallace, Christine,et al."A multi-method approach for determination of radionuclide distribution in trinitite".JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 298.2(2013):993-1003.
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