[HTML][HTML] Thermal air oxidation of UO2: Joint effect of precursor's nature and particle size distribution

A Milena-Pérez, N Rodríguez-Villagra… - Progress in Nuclear …, 2023 - Elsevier
The rate and extent of the air oxidation of UO 2 are of paramount importance due to its
relevance in the management of spent nuclear fuel at dry storage facilities. In particular, the …

Local Structure in U(IV) and U(V) Environments: The Case of U3O7

G Leinders, R Bes, KO Kvashnina… - Inorganic …, 2020 - ACS Publications
A comprehensive analysis of X-ray absorption data obtained at the UL 3-edge for a
systematic series of single-valence (UO2, KUO3, UO3) and mixed-valence uranium …

New insights into the structural transition from UO 2+ x to U 3 O 7 by quantitative Raman spectroscopy

JM Elorrieta, A Milena-Pérez, JF Vigier… - Physical Chemistry …, 2022 - pubs.rsc.org
The study of uranium oxides at different conditions is of paramount importance in the nuclear
field, especially regarding characterization of the spent nuclear fuel behavior in dry storage …

Ab initio study of the adsorption of O, O2, H2O and H2O2 on UO2 surfaces using DFT+ U and non-collinear magnetism

I Arts, R Saniz, G Baldinozzi, G Leinders… - Journal of Nuclear …, 2024 - Elsevier
In order to model correctly the corrosion of spent nuclear fuel under disposal conditions, it is
important to understand its behavior in the presence of oxidants. To advance in this …

Oxidation of Micro- and Nanograined UO2 Pellets by In Situ Synchrotron X-ray Diffraction

E De Bona, K Popa, O Walter, M Cologna… - Inorganic …, 2022 - ACS Publications
When in contact with oxidizing media, UO2 pellets used as nuclear fuel may transform into
U4O9, U3O7, and U3O8. The latter starts forming by stress-induced phase transformation …

Uranium oxides structural transformation in human body liquids

T Poliakova, A Krot, A Trigub, I Nevolin, A Averin… - Scientific Reports, 2023 - nature.com
Uranium oxide microparticles ingestion is one of the potential sources of internal radiation
doses to the humans at accidental or undesirable releases of radioactive materials. It is …

Charge Localization and Magnetic Correlations in the Refined Structure of U3O7

G Leinders, G Baldinozzi, C Ritter, R Saniz… - Inorganic …, 2021 - ACS Publications
Atomic arrangements in the mixed-valence oxide U3O7 are refined from high-resolution
neutron scattering data. The crystallographic model describes a long-range structural order …

[HTML][HTML] Oxidation of accident tolerant fuels models based on Cr-doped UO2 for the safety of nuclear storage facilities

A Milena-Pérez, LJ Bonales… - Journal of Nuclear …, 2023 - Elsevier
Abstract Oxidation of Accident-Tolerant Fuels (ATF) is important from the nuclear safety point
of view because it could provoke the release of radioactive material. Despite of the use of …

Experimental and Theoretical X-ray Absorption Near Edge Structure Study of UOx Systems at the UL3 Edge

D Novichkov, T Poliakova, I Nevolin… - The Journal of …, 2024 - ACS Publications
Uranium forms a large number of oxides and its electronic state in them is of great
fundamental interest. We employ X-ray absorption spectroscopy at the U L3 edge to …

Microstructural characterization of atomized U3Si2 powders with different silicon contents (7.4–7.8 wt%)

X Iltis, J Havette, V Klosek, C Onofri, KH Lee… - Journal of Nuclear …, 2023 - Elsevier
Atomization processes are used to produce uranium-based powders for the manufacturing
of dispersion fuel for nuclear research reactors. Whereas this process is considered …