Microstructure changes and thermal conductivity reduction in UO2 following 3.9 MeV He2+ ion irradiation
The microstructural changes and associated effects on thermal conductivity were examined
in UO 2 after irradiation using 3.9 MeV He 2+ ions. Lattice expansion of UO 2 was observed …
in UO 2 after irradiation using 3.9 MeV He 2+ ions. Lattice expansion of UO 2 was observed …
Thermal diffusion of helium in 238Pu-doped UO2
Abstract UO 2 samples doped with 0.1 wt.% plutonium oxide have been investigated with
the aim to study alpha-damage effects and the behaviour of radiogenic helium in spent …
the aim to study alpha-damage effects and the behaviour of radiogenic helium in spent …
Helium thermal diffusion in a uranium dioxide matrix
D Roudil, X Deschanels, P Trocellier, C Jégou… - Journal of Nuclear …, 2004 - Elsevier
The behavior of helium and its diffusion mechanisms in uranium dioxide significantly impact
the possible evolution of the spent fuel matrix in interim storage or in a disposal repository …
the possible evolution of the spent fuel matrix in interim storage or in a disposal repository …
Xenon versus helium behavior in UO2 single crystals: A TEM investigation
G Sattonnay, L Vincent, F Garrido, L Thome - Journal of nuclear materials, 2006 - Elsevier
The behavior of He and Xe implanted into UO2 single crystals is studied by in situ TEM
experiments before and after annealing up to 700° C. TEM micrographs show that annealing …
experiments before and after annealing up to 700° C. TEM micrographs show that annealing …
Thermal conductivity and diffusion mechanisms of noble gases in uranium dioxide: a DFT+ U study
The bulk properties of uranium dioxide (UO 2) have been investigated using Hubbard
corrected density functional theory (DFT+ U) calculations. Monitoring of the occupation …
corrected density functional theory (DFT+ U) calculations. Monitoring of the occupation …
Predicted mechanisms for radiation enhanced helium resolution in uranium dioxide
DC Parfitt, RW Grimes - Journal of Nuclear Materials, 2008 - Elsevier
Classical molecular dynamics has been performed to predict the behaviour of helium gas
bubbles in uranium dioxide, UO2, when subjected to displacement cascades that mimic the …
bubbles in uranium dioxide, UO2, when subjected to displacement cascades that mimic the …
In situ controlled modification of the helium density in single helium-filled nanobubbles
ML David, K Alix, F Pailloux, V Mauchamp… - Journal of Applied …, 2014 - pubs.aip.org
We demonstrate that the helium density and corresponding pressure can be modified in
single nano-scale bubbles embedded in semiconductors by using the electron beam of a …
single nano-scale bubbles embedded in semiconductors by using the electron beam of a …
Specific outcomes of the research on the spent fuel long-term evolution in interim dry storage and deep geological disposal
C Ferry, C Poinssot, C Cappelaere… - Journal of Nuclear …, 2006 - Elsevier
This paper presents an overview of the main results of the French research on the long-term
evolution of spent fuel. The behavior of the spent fuel rods in the various conditions likely to …
evolution of spent fuel. The behavior of the spent fuel rods in the various conditions likely to …
He migration in implanted UO2 sintered disks
S Guilbert, T Sauvage, P Garcia, G Carlot… - Journal of Nuclear …, 2004 - Elsevier
The behaviour of helium implanted in sintered uranium dioxide disks has been investigated
as a function of annealing temperature. UO2 disks have been implanted with 1 MeV 3He …
as a function of annealing temperature. UO2 disks have been implanted with 1 MeV 3He …
Diffusion of radiogenic helium in natural uranium oxides
The issue of nuclear waste management–and especially spent fuel disposal–demands
further research on the long-term behavior of helium and its impact on physical changes in …
further research on the long-term behavior of helium and its impact on physical changes in …