Investigation of chemical changes in uranium oxyfluoride particles using secondary ion mass spectrometry

Kips, R; Kristo, M J

doi:10.1007/s10967-009-0304-3

Cited by 20 publications

(31 citation statements)

References 2 publications

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“…Moreove r, a traditional graphite disk of 25 mm diameter (Schunk, Germany) was used, commonly applied for U-particle analysis at IRMM [3,4,[15][16][17]22] . .…”

Section: Methodsmentioning

confidence: 99%

“…A question is whether the particles become altered once exposed to ambient conditions and how one would possibly measure these changes. A good indicator for the UO 2 F 2 particle exposure/ag ing time could be the fluorine content, particularly the fluorine-uranium or fluorine-oxygen ratio [4]. Another way might be to follow molecula r changes of UO 2 F 2 under different environm ental conditions.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper aerosol uranyl fluoride particles are investigated , which were produced via UF 6 hydrolysis in humid ambient air under controlled laboratory condition s [3,4,15]. Uranyl fluoride particles were formed in the same way as in an enrichme nt facility, where uranium hexafluoride in gaseous form is enriched exploitin g the mass difference between isotopes passing through cascades of centrifuges.…”

Section: Introductionmentioning

confidence: 99%

“…Their molecula r stability has been investigated, since the loss of fluorine had already been confirmed [4]. Detection of the chemical alteration of uranyl fluoride particles by MRS required a significant enhancement of the Raman scattering.…”

Section: Introductionmentioning

confidence: 99%

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New insight into UO2F2 particulate structure by micro-Raman spectroscopy

Stefaniak

Darchuk

Sapundjiev

et al. 2013

Journal of Molecular Structure

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h i g h l i g h t s " Uranyl fluoride particles prepared via hydrolysis of UF 6 were deposited on metallic substrates for micro-Raman spectroscopy." New substrates enhanced Raman signal from the particles of the size below 1 lm." Raman shift of U-O symmetric stretching appeared at values 847/842/839 cm À1 due to gradual water absorption by UO 2 F 2 . " The smooth substrates fa cilitated the process of water saturation of deposited particulate uranyl fluoride. " UO 2 F 2 particles deposited of metallic surfaces appeared very stable under long-term exposure of a laser beam. a b s t r a c tUranyl fluoride particles produced via hydrolysis of uranium hexafluoride have been deposited on different substrates: polished graphite disks, silver foil, stainless steel and gold-coated silicon wafer, and measured with micro-Raman spectroscopy (MRS). All three metallic substrates enhanced the Raman signal delivered by UO 2 F 2 in comparison to graphite. The fundamental stretching of the U-O band appeared at 867 cm À1 in case of the graphite substrate, while in case of the others it was shifted to lower frequencies (down to 839 cm À1 ). All applied metallic substrates showed the expected effect of Raman signal enhanceme nt; however the gold layer app eared to be most effective. Application of new substrates provides more infor mation on the molecular structure of uranyl fluoride precipitation, which is interesting for nuclear safeguards and nuclear environmen tal analysis.

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“…Moreove r, a traditional graphite disk of 25 mm diameter (Schunk, Germany) was used, commonly applied for U-particle analysis at IRMM [3,4,[15][16][17]22] . .…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

New insight into UO2F2 particulate structure by micro-Raman spectroscopy

Stefaniak

Darchuk

Sapundjiev

et al. 2013

Journal of Molecular Structure

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“…The U-F bond is a detectable indicator signifying manmade origin. The rate of fluorine disassociation is determined by the relative humidity of the environment, but measurements with nano-secondary ion mass spectrometry (nanoSIMS) confirm that some fluorine remains bound to uranium after months of environmental exposure (Kips & Kristo 2009, Kips et al 2012.…”

Section: Conversionmentioning

confidence: 99%

Environmental Detection of Clandestine Nuclear Weapon Programs

Kemp

2016

Annu. Rev. Earth Planet. Sci.

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Environmental sensing of nuclear activities has the potential to detect nuclear weapon programs at early stages, deter nuclear proliferation, and help verify nuclear accords. However, no robust system of detection has been deployed to date. This can be variously attributed to high costs, technical limitations in detector technology, simple countermeasures, and uncertainty about the magnitude or behavior of potential signals. In this article, current capabilities and promising opportunities are reviewed. Systematic research in a variety of areas could improve prospects for detecting covert nuclear programs, although the potential for countermeasures suggests long-term verification of nuclear agreements will need to rely on methods other than environmental sensing.

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Current literature in mass spectrometry

2010

J. Mass Spectrom.

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In order to keep subscribers up‐to‐date with the latest developments in their field, John Wiley & Sons are providing a current awareness service in each issue of the journal. The bibliography contains newly published material in the field of mass spectrometry. Each bibliography is divided into 11 sections: 1 Reviews; 2 Instrumental Techniques & Methods; 3 Gas Phase Ion Chemistry; 4 Biology/Biochemistry: Amino Acids, Peptides & Proteins; Carbohydrates; Lipids; Nucleic Acids; 5 Pharmacology/Toxicology; 6 Natural Products; 7 Analysis of Organic Compounds; 8 Analysis of Inorganics/Organometallics; 9 Surface Analysis; 10 Environmental Analysis; 11 Elemental Analysis. Within each section, articles are listed in alphabetical order with respect to author

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Investigation of chemical changes in uranium oxyfluoride particles using secondary ion mass spectrometry

Cited by 20 publications

References 2 publications

New insight into UO2F2 particulate structure by micro-Raman spectroscopy

New insight into UO2F2 particulate structure by micro-Raman spectroscopy

Environmental Detection of Clandestine Nuclear Weapon Programs

Current literature in mass spectrometry

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