Thermal energy transport in oxide nuclear fuel
To efficiently capture the energy of the nuclear bond, advanced nuclear reactor concepts
seek solid fuels that must withstand unprecedented temperature and radiation extremes. In …
seek solid fuels that must withstand unprecedented temperature and radiation extremes. In …
Synchrotron radiation techniques and their application to actinide materials
Research on actinide materials, both basic and applied, has been greatly advanced by the
general techniques available from high-intensity photon beams from x-ray synchrotron …
general techniques available from high-intensity photon beams from x-ray synchrotron …
Atomistic simulations of nuclear fuel with machine learning interatomic potentials
We present the development of machine-learning interatomic potentials for uranium dioxide
UO 2. Density functional theory calculations with a Hubbard U correction were leveraged to …
UO 2. Density functional theory calculations with a Hubbard U correction were leveraged to …
High-field ultrasound study of elastic constants and possible magnetic symmetry transformations in
In this study, we probe the coupling between magnetism and lattice dynamics in UO 2, a 3 k
antiferromagnet that undergoes magnetic ordering below its Néel temperature (TN) of 30.8 …
antiferromagnet that undergoes magnetic ordering below its Néel temperature (TN) of 30.8 …
A Non-Equilibrium Nucleation Model to Calculate the Density of State and Its Application to the Heat Capacity of Stoichiometric UO2
IL Ferreira - International Journal of Thermophysics, 2021 - Springer
In this paper, the molar specific heat capacity is theoretically predicted for stoichiometric UO
2.00 in the temperature range from 0 K to 3000 K. The λ-phase transition at 2670±30 K and …
2.00 in the temperature range from 0 K to 3000 K. The λ-phase transition at 2670±30 K and …
Mechanism of Non-Coplanar Magnetic Ordering Assisted by the Jahn–Teller Effect in UO2
R Shiina - Journal of the Physical Society of Japan, 2022 - journals.jps.jp
The superexchange (SE) and the Jahn–Teller (JT) interactions in the Mott insulator UO2 are
studied for a model composed of one-f-electron Γ8 basis states. It is shown that the SE …
studied for a model composed of one-f-electron Γ8 basis states. It is shown that the SE …
Ferromagnetic Crossover within the Ferromagnetic Order of U7Te12
P Opletal, H Sakai, Y Haga, Y Tokiwa… - Journal of the Physical …, 2023 - journals.jps.jp
We investigate the physical properties of a single crystal of uranium telluride U7Te12. We
have confirmed that U7Te12 crystallizes in the hexagonal structure with three nonequivalent …
have confirmed that U7Te12 crystallizes in the hexagonal structure with three nonequivalent …
Impact of dynamic Jahn-Teller effect on magnetic excitations, lattice vibration, and thermal conductivity in UxTh1-xO2 system
Vibrational and magnetic properties of single-crystal uranium-thorium dioxide (UxTh1-xO2)
with a full range of 0< x< 1 is investigated. Thorium dioxide is a diamagnet whose thermal …
with a full range of 0< x< 1 is investigated. Thorium dioxide is a diamagnet whose thermal …
Field-Driven Jahn–Teller Effect and Domain Transition in Non-Coplanar Antiferromagnet UO2
R Shiina - Journal of the Physical Society of Japan, 2023 - journals.jps.jp
Effect of magnetic field on the non-coplanar triple-Q magnetic order in the Mott insulator UO2
was investigated. Making use of the microscopic model for the localized 5 f electrons, we …
was investigated. Making use of the microscopic model for the localized 5 f electrons, we …
Characterization of a small-scale prototype detector with wide dynamic range for time-resolved high-energy X-Ray applications
We present characterization measurements of a fast-framing, wide-dynamic-range x-ray
area detector intended for high-energy applications (≥ 2-keV photons). The MM-PAD-2.1 …
area detector intended for high-energy applications (≥ 2-keV photons). The MM-PAD-2.1 …