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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Dacheux, Nicolas
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Speciation and chemical behavior of molybdenum in uranium dioxide samples prepared by hydroxide precipitationcitations
- 2024Speciation and chemical behavior of molybdenum in uranium dioxide samples prepared by hydroxide precipitationcitations
- 2023Synthesis and sintering of homogenous Hf1-xMIIIxO2-x/2 ceramics as solid electrolytes for oxygen sensors in liquid sodium
- 2023Understanding the solid/liquid interface evolution during the dissolution of Nd-doped UO2 by macro-/microscopic dual approachcitations
- 2022Synchrotron study of the relations between sintering conditions, structure and cation speciation in (U,Ce)O2+δ ceramics
- 2022Synthesis and sintering of homogenous Hf1-xMIIIxO2-x/2 ceramics as solid electrolytes for oxygen sensors operating in liquid sodium
- 2022Experimental approach to study the alteration of MOX MIMAS fuels in an underwater storage situation
- 2022Characterization and dissolution of (Ru, Rh, Pd, Mo)-bearing (U,Th)O2 heterogeneous mixed oxides for spent fuel modeling
- 2022Impact of impurities on the fabrication and performances of yttrium-doped thoria electrolyte ceramicscitations
- 2021The Role of Water and Hydroxyl Groups in the Structures of Stetindite and Coffinite, MSiO4 (M = Ce, U).citations
- 2020An in-situ electron microscopy study of dual ion-beam irradiated xenotime-type ErPO$_4$citations
- 2019Deciphering the Crystal Structure of a Scarce 1D Polymeric Thorium Peroxo Sulfate
- 2019Impact of the cationic homogeneity on Th0.5U0.5O2 densification and chemical durabilitycitations
- 2019Impact of the cationic homogeneity on Th$_{0.5}$U$_{0.5}$O$_2$ densification and chemical durabilitycitations
- 2017Synthesis and Direct Sintering of Nanosized (M IV ,M III )O 2‐ x Hydrated Oxides as Electrolyte Ceramicscitations
- 2017Study of the hydrothermal synthesis of ThSiO4, USiO4 and CeSiO4 aiming at determining the conditions of PuSiO4 formation
- 2017Novel approaches for the in situ study of the sintering of nuclear oxide fuel materials and their surrogatescitations
Places of action
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article
An in-situ electron microscopy study of dual ion-beam irradiated xenotime-type ErPO$_4$
Abstract
Rare-earth phosphates adopting the xenotime (REPO 4 ; RE = Tb − Lu & Y, Sc) structure are proposed as a potential matrix for the confinement of minor actinides. Minor actinides (e.g., Np, Am, Cm) undergo a radioactive decay process in which high-energy recoil atom (70–100 keV) and energetic alpha particles (4.5–5.8 MeV) are produced. In this study, the impact of these energetic decay products on the structure of xenotime-type ErPO 4 has been investigated via high energy dual ion-beam irradiation of ErPO 4 ceramics. Au 2+ (1.5 MeV) and He + (160 keV) ions were used to simulate the effects of recoil atom and α-particles, respectively. Multiple experiments were carried out in which the Au 2+ and He + ions with varying ion-fluences (ions/cm 2 ) and ion-flux (ions/cm 2 /s) were implanted sequentially (Au 2+ followed by He + irradiation) and simultaneously (Au 2+ + He + irradiation) into ErPO 4 ceramics. Sequential ion-irradiation experiments have shown that the xenotime structure was amorphized by Au 2+ ions at a relatively lower ion-fluence (5 × 10 13 ions/cm 2 ) in comparison to the monazite structure. Upon irradiation of the amorphous ErPO 4 with He + ions, recrystallization of the amorphous xenotime due to α-particles was not observed. However, simultaneous ion-irradiation experiments on ErPO 4 showed that the amorphization of the xenotime structure was prevented upon deposition of higher amounts of electronic energy (E electronic ) in the lamella. Likewise monazite samples, the α-healing mechanism was also experimentally demonstrated in synthetic xenotime samples.