| People | Locations | Statistics |
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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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Monnet, Isabelle
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (24/24 displayed)
- 2023Iron and steel corrosion mechanisms in a carbonate rich pore water: Multiscale characterization of the corrosion product layerscitations
- 2023Localised corrosion of iron and steel in the Callovo-Oxfordian porewater after 3 months at 120 °C: Characterizations at micro and nanoscale and formation mechanismscitations
- 2022Structural and mechanical modifications of GaN thin films by swift heavy ion irradiationcitations
- 2021Investigation of steel corrosion in MX80 bentonite at 120°Ccitations
- 2021Fullerene irradiation leading to track formation enclosing nitrogen bubbles in GaN materialcitations
- 2020Ionization-induced annealing in silicon upon dual-beam irradiationcitations
- 2019Swift heavy ion-irradiated multi-phase calcium borosilicates: implications to molybdenum incorporation, microstructure, and network topologycitations
- 2018Localized Plasmonic Resonances of Prolate Nanoparticles in a Symmetric Environment: Experimental Verification of the Accuracy of Numerical and Analytical Modelscitations
- 2018Irradiation and corrosion resistance of a nanostructured 316 austenitic stainless steel
- 2018Discovery of a maximum damage structure for Xe-irradiated borosilicate glass ceramics containing powellitecitations
- 2015In-situ characterization of ion-irradiation creep of micrometric SiC fibers
- 2015Irradiation and corrosion resistance of a nanostructured 316 austenitic stainless steel
- 2012Radiation Effects in Ceramics: Ceramics dislike strain, so they react to adapt
- 2012Formation of nanosized hills on Ti3SiC2 oxide layer irradiated with swift heavy ionscitations
- 2011In-situ X-Ray diffraction for ionic-covalent material study under swift heavy ion irradiation
- 2011Structural changes induced by heavy ion irradiation in titanium silicon carbidecitations
- 2010Effect of radiation-induced amorphization on smectite dissolution kinetics
- 2008Amorphization of sapphire induced by swift heavy ions: A two step process
- 2008Amorphization of ZnAl2O4 spinel under heavy ion irradiation
- 2008Effects of electronic and nuclear interactions in SiCcitations
- 2008Effect of the energy deposition modes on the structural stability of pure zirconiacitations
- 2005Plastic Deformation of Irradiated Zirconium Alloys: TEM Investigations and Micro-Mechanical Modelingcitations
- 2004Microstructural investigation of the stability under irradiation of oxide dispersion strengthened ferritic steels.
- 2004A statistical TEM investigation of dislocation channeling mechanism in neutron irradiated zirconium alloys.
Places of action
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document
Effect of radiation-induced amorphization on smectite dissolution kinetics
Abstract
In the high level nuclear radioactive waste repositories (HLNWR) management, smectite (a major constituent of bentonite) is considered to limit the dissemination of radionuclide in the environment 1. Indeed, smectite exhibits interesting properties such as a high cation exchange capacity and swelling capacity that are expected to enhance the retention of radionuclides in a case of a leakage of the waste. For this reason, in France, smectite will be found in the near and far field of the waste. In the near field of the waste, bentonite will be a major constituent of the engineering barriers used mainly for backfilling and in the far field, deep argillaceous formations are the expected host rock. However, it was recently reported that the conditions for induced amorphization of smectite by heavy ions were consistent with a leakage scenario in a HLNWR 2. Such amorphization is expected to induce strong modifications of the mineral properties such as sorption capacity, swelling and dissolution kinetics. In this study, we used a purified smectite issued from the MX80 bentonite in order to evaluate the influence of amorphization on the dissolution kinetics. The sample was irradiated with 925 MeV xenon ions at the GANIL facility (Caen, France). Amorphization was controlled by X-ray diffraction, transmission electron microscopy and Fourier transform infrared spectroscopy. Besides, an important coalescence of the smectite sheets was observed by scanning electron microscopy, which lead to a loss of interparticle porosity. Furthermore, it was observed that the dissolution rate far-from-equilibrium is two times larger in the amorphous sample than in the reference clay. We will discuss the result with previous observations on other minerals and the potential implications for the dissemination of radionuclides in the environment.