Innovative vibrational spectroscopy research for forensic application

A Weber, B Hoplight, R Ogilvie, C Muro… - Analytical …, 2023 - ACS Publications
Forensic science is a unique field of study as it combines fundamental and applied research
to assist with matters of the criminal justice system. While other branches of science have a …

Raman and infrared spectra of plutonium (IV) oxalate and its thermal degradation products

JH Christian, BJ Foley, E Ciprian, DD Dick… - Journal of Nuclear …, 2022 - Elsevier
For over 80 years, plutonium dioxide has been routinely produced via thermal
decomposition of hydrated plutonium (IV) oxalate. Despite the longstanding utility of this …

[HTML][HTML] Composition-dependent morphology of stoichiometric and oxygen deficient PuO2 nanoparticles in the presence of H2O and CO2: A density-functional theory …

S Moxon, JM Flitcroft, LJ Gillie, DJ Cooke… - Applied Surface …, 2024 - Elsevier
Among the most pressing challenges faced by the UK nuclear industry is how to safely
handle its large stockpile of plutonium dioxide. In particular, understanding how the exposed …

Quantitative Microstructural Characterization of Plutonium Oxalate Auto‐Degradation and Evidence for PuO2 Nanocrystal Formation

JF Corbey, LE Sweet, SI Sinkov… - European Journal of …, 2021 - Wiley Online Library
It has been known since the 1950s that plutonium oxalate powders change color and lose
mass over time when stored at room temperature in air. Despite several studies monitoring …

Ozone-facilitated formation of uranyl peroxide in humid conditions

SE Benjamin, JA LaVerne, GE Sigmon… - Inorganic …, 2022 - ACS Publications
Metaschoepite,[(UO2) 8O2 (OH) 12](H2O) 10, maintained in a high relative humidity (RH)
environment with air initially transformed into an intermediate phase that subsequently was …

Investigation of process history and underlying phenomena associated with the synthesis of plutonium oxides using Vector Quantizing Variational Autoencoder

CM Hainje, CA Nizinski, SW Jackson, RA Clark… - Chemometrics and …, 2023 - Elsevier
Accurate, high-throughput, and unbiased analysis of plutonium oxide particles is necessary
for analysis of the underlying phenomena associated with the process parameters involved …

Probing the thermal decomposition of plutonium (III) oxalate with IR and Raman spectroscopy, X-ray diffraction, and electron microscopy

JH Christian, BJ Foley, E Ciprian, J Darvin… - Journal of Nuclear …, 2023 - Elsevier
The thermal decomposition of Pu (III) oxalate was analyzed by Raman microspectroscopy,
infrared spectroscopy, scanning electron microscopy, and powder X-ray diffraction. These …

Characterizing the solid hydrolysis product, UF 4 (H 2 O) 2.5, generated from neat water reactions with UF 4 at room temperature

JH Christian, CA Klug, M DeVore, E Villa-Aleman… - Dalton …, 2021 - pubs.rsc.org
Uranium tetrafluoride (UF4) is an important intermediate in the production of UF6 and
uranium metal. Room temperature hydrolysis of UF4 was investigated using a combination …

Probing the hydrolytic degradation of UF 4 in humid air

BJ Foley, JH Christian, CA Klug, E Villa-Aleman… - Dalton …, 2022 - pubs.rsc.org
This manuscript describes the chemical transformations that occur during hydrolysis of
uranium tetrafluoride (UF4) due to its storage in humid air (85% and 50% relative humidity) …

The electronic Raman scattering spectrum of PuO2

E Villa‐Aleman, DD Dick, JH Christian… - Journal of Raman …, 2023 - Wiley Online Library
Abstract The Raman spectrum of PuO2 was measured up to 13,000 cm− 1 with three
different laser excitation wavelengths spanning the resonance (405 nm), near‐resonance …