First-principles investigation of uranium mononitride (UN): Effect of magnetic ordering, spin-orbit interactions and exchange correlation functional

V Kocevski, DA Rehn, MWD Cooper… - Journal of Nuclear …, 2022 - Elsevier
Uranium mononitride (UN) is a promising nuclear fuel that combines the advantageous
properties of readily used UO 2 and uranium alloys. Various properties of UN have been …

Incorporation of Kr and Xe in uranium mononitride: a density functional theory study

L Yang, N Kaltsoyannis - The Journal of Physical Chemistry C, 2021 - ACS Publications
Uranium nitride is a material of considerable fundamental interest and is a promising
candidate for an advanced nuclear fuel. We here study intrinsic point defects and …

Energetics of oxidation and formation of uranium mononitride

VG Goncharov, J Liu, A van Veelen… - Journal of Nuclear …, 2022 - Elsevier
Uranium mononitride (UN) is an advanced nuclear fuel currently being considered for use in
several generation IV fast and thermal neutron spectrum core designs, with additional …

Understanding xenon and vacancy behavior in UO 2, UN and U 3 Si 2: a comparative DFT+ U study

J Zhao, D Sun, L Xi, P Chen, J Zhao… - Physical Chemistry …, 2023 - pubs.rsc.org
Extensive attention has been paid to accident tolerant fuels (ATFs), such as uranium
mononitride (UN) and uranium sesquisilicide (U3Si2), which are regarded as potential …

[HTML][HTML] Incorporation of volatile fission products in UN and PuN and comparison to oxides

N Kuganathan, NJ Barron, RW Grimes - Journal of Nuclear Materials, 2023 - Elsevier
The incorporation of volatile fission products (Kr, Xe, Br, I, Te, Rb and Cs) in a range of
interstitial and defect sites in UN and PuN is examined via predictions made using atomic …

Simulations of self-and Xe diffusivity in uranium mononitride including chemistry and irradiation effects

MWD Cooper, J Rizk, C Matthews, V Kocevski… - Journal of Nuclear …, 2023 - Elsevier
A combination of density functional theory and empirical potential atomic scale simulations
have been used to determine a model for defect stability and mobility in uranium …

[HTML][HTML] The incorporation of xenon at point defects and bubbles in uranium mononitride

JJ Li, N Zagni, WD Neilson, RL Gray… - Journal of Nuclear …, 2023 - Elsevier
Uranium mononitride (UN) has been proposed as an accident tolerant fuel for nuclear
fission reactors and offers enhanced performance during accident scenarios relative to the …

Thermal conductivity and diffusion mechanisms of noble gases in uranium dioxide: a DFT+ U study

E Torres, TP Kaloni - Journal of Nuclear Materials, 2019 - Elsevier
The bulk properties of uranium dioxide (UO 2) have been investigated using Hubbard
corrected density functional theory (DFT+ U) calculations. Monitoring of the occupation …

[HTML][HTML] Potential accident tolerant fuel candidate: Investigation of physical properties of the ternary phase U2CrN3

Y Mishchenko, S Patnaik, E Charatsidou… - Journal of Nuclear …, 2022 - Elsevier
In the present study, physical properties of the ternary phase U 2 CrN 3 are evaluated
experimentally and by modeling methods. High density pellets containing the ternary phase …

Interplay between London Dispersion, Hubbard U, and Metastable States for Uranium Compounds

MS Christian, ER Johnson… - The Journal of Physical …, 2021 - ACS Publications
High-throughput computational studies of lanthanide and actinide chemistry with density-
functional theory are complicated by the need for Hubbard U corrections, which ensure …