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 …
Coupled experimental and investigation of positron lifetimes in
We performed positron annihilation spectroscopy measurements on uranium dioxide
irradiated with 45 MeV α particles. The positron lifetime was measured as a function of the …
irradiated with 45 MeV α particles. The positron lifetime was measured as a function of the …
Radiation damage in uranium dioxide: Coupled effect between electronic and nuclear energy losses
A coupling between the nuclear and electronic energy losses occur in the nuclear fuel (UO
2) during in-reactor operations. However, the underlying mechanisms involved are still to be …
2) during in-reactor operations. However, the underlying mechanisms involved are still to be …
Irradiation-induced microstructural transformations in UO2 accelerated upon electronic energy deposition
G Gutierrez, M Bricout, F Garrido, A Debelle… - Journal of the European …, 2022 - Elsevier
The combination of electronic and nuclear energy deposition can have an effect on the
defect production and evolution that is not simply the sum of both independent contributions …
defect production and evolution that is not simply the sum of both independent contributions …
Effect of coupled electronic and nuclear energy deposition on strain and stress levels in UO2
G Gutierrez, D Gosset, M Bricout, C Onofri… - Journal of Nuclear …, 2019 - Elsevier
UO 2 polycrystals were irradiated in the nuclear energy-loss regime, S n (900 keV I and 2
Mev Au ions) and also with an additional electronic energy deposition, S e (900 keV I and 36 …
Mev Au ions) and also with an additional electronic energy deposition, S e (900 keV I and 36 …
Inferring relative dose-dependent color center populations in proton irradiated thoria single crystals using optical spectroscopy
We have utilized photoluminescence spectroscopy and optical ellipsometry to characterize
the dose-dependence of the photoluminescence emission intensity and changes in optical …
the dose-dependence of the photoluminescence emission intensity and changes in optical …
Interaction between Xe bubbles and grain boundaries as well as the influences on structural evolution in UO2: A molecular dynamics simulation
H Ma, D Peng, H Bao, Z Sun, J Zhang, F Ma - Journal of Nuclear Materials, 2024 - Elsevier
In polycrystalline UO 2 fuels, fission Xe bubbles not only cause fuel swelling, but also are
released into the fuel-cladding gap through GBs. The accumulation of a large amount of Xe …
released into the fuel-cladding gap through GBs. The accumulation of a large amount of Xe …
The Mechanism of Swelling of Irradiated Oxide Nuclear Fuel: Part I. Normal Operating Condition
YN Devyatko, VV Novikov, OV Khomyakov - Inorganic Materials: Applied …, 2024 - Springer
The fuel swelling during normal operation is considered within the framework of first-order
phase transition theory. It is shown that the phase transition occurs in the supersaturated …
phase transition theory. It is shown that the phase transition occurs in the supersaturated …
[HTML][HTML] Oxygen related defects and vacancy clusters identified in sputtering grown UOx thin films by positron annihilation techniques
We experimentally studied the formation of vacancy clusters and oxygen related defects in
uranium oxide (UO x) thin films (< 70 nm) changing the stoichiometry in the x= 2.2–3.5 …
uranium oxide (UO x) thin films (< 70 nm) changing the stoichiometry in the x= 2.2–3.5 …
Evidence of Xe-incorporation in the bubble superlattice in irradiated U-Mo fuel
For years, researchers have reported competing ideas on the formation of fission gas bubble
superlattices in metallic fuels, which was postulated to be comprised of elemental xenon …
superlattices in metallic fuels, which was postulated to be comprised of elemental xenon …