Preparation and Properties of Plutonium-Bearing Oxide Particulates

Jones, L.V.; Ofte, D.; Phipps, K.D.; Tucker, P.A.

doi:10.1021/i360010a002

Cited by 7 publications

(2 citation statements)

References 3 publications

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“…This work proposed to improve the ability to use quantitative color analyses as an indicator of process provenance for nuclear forensics assessments through a combined computational and experimental evaluation of the origins of color differences in PuO2. Color differences in calcined PuO2 have long been noted in their production, with descriptions of the color including yellow, 11 olive-green, 12,13 olive-brown, 12 amber, 14 black, 14,15 dark khaki, 16 and yellow-green 11 . These differences in color have been attributed to various process differences, including calcination temperature, 17 initial Pu compound, 1 stoichiometry, 5 and microstructure, 4 but the significance of each of these effects on the apparent or spectral color has not been fully explored.…”

Section: Motivationmentioning

confidence: 99%

Characterizing PuO<sub>2</sub> Powder at Oak Ridge National Laboratory for the Multi-Lab Plutonium Process Signatures Campaign FY 2022

Sadergaski¹,

Andrews²,

Abrecht³

et al. 2023

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Section: Motivationmentioning

confidence: 99%

Characterizing PuO<sub>2</sub> Powder at Oak Ridge National Laboratory for the Multi-Lab Plutonium Process Signatures Campaign FY 2022

Sadergaski¹,

Andrews²,

Abrecht³

et al. 2023

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“…A number of experimental studies have produced similar spheres. Jones et al (1964) produced UO 2 microspheres by passing metaloxide through an inductively coupled plasma torch (stoichiometric UO 2 microspheres <50 mm diameter were red in colour, some of the spheres were hollow). Surya Narayana et al (1994) electrically heated UO 2 pellets to a peak temperature of 3773 K, producing aggregates of fine U 3 O 8 particulates (attributed to vapour condensation) as well as larger low-solubility UO 2 spheres (~4 mm diameter).…”

Section: Formation Of Uranium Oxide Spheresmentioning

confidence: 99%

The morphologies and compositions of depleted uranium particles from an environmental case-study

Lloyd¹,

Mosselmans²,

Parrish³

et al. 2009

Mineral. mag.

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Uraniferous particles from contaminated environmental samples were analysed by scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDXA) and microfocus extended X-ray absorption fine structure (mEXAFS) spectroscopy. The particles of interest are uranium oxides, which were released into the environment by the combustion of scrap depleted uranium (DU) metal at a factory in Colonie, New York, USA. Most of the identified particles appear to have primary, 'as emitted' morphologies; some have evidence of minor dissolution, including corrosion pitting. Polycrystalline and often hollow microscopic spheres were identified, which are similar to particles produced by DU munitions impacting armoured targets. They are attributed to the autothermic oxidation of melt droplets. The compositions of the analysed spheres are dominated by UO 2+x with variable amounts of U 3 O 8 , two of the least soluble and least bioaccessible phases of U. These particles, collected from dusts and soils, have survived more than 25 y in the terrestrial environment. This study further supports the case for using Colonie as an analogue for battlefield DU contamination.

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Recent developments in plasma jet technology

Kubaisek

Gauvin

1967

Can J Chem Eng

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This article is an up‐to‐date survey of the field of plasma jet technology. Its intention is to make available the latest information about the characteristics, limitations and applications of plasma generating devices, particularly in the field of chemical processing. The uses of plasma jet in the aerospace field, and in material processing and fabrication are briefly reviewed. The chemical applications discussed include the syntheses of acetylene, cyanogen, nitric oxide, as well as various carbides and nitrides.

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Preparation and Properties of Plutonium-Bearing Oxide Particulates

Cited by 7 publications

References 3 publications

Characterizing PuO<sub>2</sub> Powder at Oak Ridge National Laboratory for the Multi-Lab Plutonium Process Signatures Campaign FY 2022

Characterizing PuO<sub>2</sub> Powder at Oak Ridge National Laboratory for the Multi-Lab Plutonium Process Signatures Campaign FY 2022

The morphologies and compositions of depleted uranium particles from an environmental case-study

Recent developments in plasma jet technology

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