Editorial: Experimental and model-based assessment of diffusion kinetics of actinides and oxygen during fuel fabrication and of fission products over in-pile use

Autor: Jacques Léchelle, Lelio Luzzi, Luteng Zhang

Publikováno v: Frontiers in Nuclear Engineering, Vol 2 (2023)

Externí odkaz: https://doaj.org/article/f9214f0d97b64918aa3b0aa7def18243

Evolution of the perovskite phase in UO2-based samples under conditions representative of a severe nuclear accident by XANES

Autor: Claire Le Gall, Vincent Klosek, Fabienne Audubert, Jacques Lechelle, Doris Drouan, Jean-Christophe Richaud, Yves Pontillon, Myrtille O.J.Y. Hunault, Pier Lorenzo Solari, Mauro Rovezzi, Jean-Louis Hazemann

Publikováno v: Journal of Solid State Chemistry. 319:123792

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::21ddc85437cd0cf86efe775f76dbf82f
https://doi.org/10.1016/j.jssc.2022.123792

In situ control of oxygen partial pressure in a buffered UO2 fuel: A manufacturing process

Autor: Jean-Marc Heintz, Jacques Lechelle, Xavière Iltis, M. Khair, H. Palancher, P. Matheron, N. Tarisien, Ch. Riglet-Martial

Publikováno v: Journal of the European Ceramic Society
Journal of the European Ceramic Society, Elsevier, 2020, 40 (4), pp.1626-1638. ⟨10.1016/j.jeurceramsoc.2019.11.005⟩
Journal of the European Ceramic Society, 2020, 40 (4), pp.1626-1638. ⟨10.1016/j.jeurceramsoc.2019.11.005⟩

International audience; An innovative laboratory process making use of the specific properties of solid redox buffers was developed for producing O2 self-regulated UO2 fuel samples. The method was optimized using Molybdenum and Niobium oxide buffers.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::791363b96a76f89bfc6c944f94f3a7c7
https://hal.archives-ouvertes.fr/hal-02481021/file/2020-020.pdf

Characterization of Oxygen Defect Clusters in UO2+x Using Neutron Scattering and PDF Analysis

Autor: Lionel Desgranges, Gianguido Baldinozzi, Audrey Miard, David Simeone, Henry E. Fischer, Philippe Garcia, Jacques Lechelle, Yue Ma

Publikováno v: Inorganic Chemistry
Inorganic Chemistry, American Chemical Society, 2018, 57 (12), pp.7064-7076. ⟨10.1021/acs.inorgchem.8b00750⟩
Inorganic Chemistry, 2018, 57 (12), pp.7064-7076. ⟨10.1021/acs.inorgchem.8b00750⟩

In hyper-stoichiometric uranium oxide, both neutron diffraction work and, more recently, theoretical analyses report the existence of clusters such as the 2:2:2 cluster, comprising two anion vacancies and two types of anion interstitials. However, li

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2f98287616f5502afc2444962b3e970
https://doi.org/10.1021/acs.inorgchem.8b00750

Charged defects during alpha-irradiation of actinide oxides as revealed by Raman and luminescence spectroscopy

Autor: Nicolas Clavier, M. Magnin, Christophe Jégou, Jacques Lechelle, Lionel Desgranges, R. Mohun, Guillaume Guimbretière, Romain Vauchy, Nicolas Dacheux, Patrick Simon, Christophe Valot, Florian Duval, Aurélien Canizares

Publikováno v: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Elsevier, 2015, 374, pp.67-70. ⟨10.1016/j.nimb.2015.08.003⟩
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2015, 374, pp.67-70. ⟨10.1016/j.nimb.2015.08.003⟩

International audience; We have recently evidenced an original Raman signature of alpha irradiation-induced defects in UO2. In this study, we aim to determine whether the same signature also exists in different actinide oxides, namely ThO2 and PuO2.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::acf18170fc3bbbbd4c8541dbce2b46c5
https://doi.org/10.1016/j.nimb.2015.08.003