A5032102953- Radioactive element chemistry and processing
- Radioactive contamination and transfer
- Geological and Geochemical Analysis
- Radioactivity and Radon Measurements
- Geochemistry and Elemental Analysis
- Geology and Paleoclimatology Research
- Geochemistry and Geologic Mapping
- Paleontology and Stratigraphy of Fossils
- Nuclear materials and radiation effects
- Concrete and Cement Materials Research
- Lichen and fungal ecology
- Nuclear and radioactivity studies
- Recycling and utilization of industrial and municipal waste in materials production
- Groundwater flow and contamination studies
- earthquake and tectonic studies
- Hydrocarbon exploration and reservoir analysis
- Recycling and Waste Management Techniques
- Microplastics and Plastic Pollution
- Tree-ring climate responses
- Protist diversity and phylogeny
- Radiation Therapy and Dosimetry
- Nuclear Materials and Properties
- Ethnobotanical and Medicinal Plants Studies
- Polyomavirus and related diseases
- Mine drainage and remediation techniques
Laboratoire de Physique Subatomique et des Technologies Associées
2014-2024
IMT Atlantique
2019-2024
Centre National de la Recherche Scientifique
1999-2023
Territoires
2022-2023
Nantes Université
2014-2023
Institut National de Physique Nucléaire et de Physique des Particules
2019-2021
Université Clermont Auvergne
2012-2018
École Nationale Supérieure des Mines de Paris
2014
Laboratoire Magmas et Volcans
2003-2012
Observatoire de Physique du Globe de Clermont-Ferrand
2008
Ladinian (Middle Triassic) strata of the Balaton Highland (west–central Hungary) comprise interbedded marine carbonate and volcaniclastic rocks. The sediments are noted for their rich ammonoid faunas, which allow detailed biostratigraphic subdivision correlation. For first time, isotopic dating tuff layers was carried out to calibrate age zones subzones. Four successive horizons were dated from Felsouu"örs section, a candidate stratotype base stage. Within Reitzi Zone, is interpreted here...
Mineral springs in Massif Central, France can be characterized by higher levels of natural radioactivity comparison to the background. The biota these waters is constantly under radiation exposure mainly from α-emitters decay chains, with 226Ra sediments ranging 21 Bq/g 43 and 222Rn activity concentrations water up 4600 Bq/L. This study couples for first time micro- nanodosimetric approaches radioecology combining GATE Geant4-DNA assess dose rates DNA damages microorganisms living naturally...
This article presents the modeling results from interaction between simulated nuclear waste glasses and ordinary Portland cement (OPC). In general, are in good agreement with experimental results. A diffusion-based glass dissolution model well describes release of B Li glass, a reactive transport profiles dissolved elements cement. It is found that effective diffusion coefficient much larger than B. Sorption both onto required to better fit their measured profiles. For cement, one spatially...
High U concentrations (reaching up to 14850 mg ⋅ kg−1), were determined in soils and sediments of a wetland downstream former mine France. This study aims identify the origin radioactive contaminants by employing Pb isotope fingerprinting, (234U/238U) disequilibrium, SEM, SIMS observations. Additionally, information about 226Ra transport processes was studied using U-238 series disequilibrium. The results fingerprinting highlighted inherited material inputs different U-mines with mainly two...
In a waste management context, predicting the mobility of contaminants is essential. A key issue entails assessing applicability current knowledge on adsorption processes to natural systems. Such focus herein for nickel in interaction with Callovo-Oxfordian (COx) clay rock, formation selected France possible radioactive disposal. The challenge link predictive modeling results experimental data characterizing behavior labile and naturally occurring Ni fraction by implementing new simple...
Anthropogenic radionuclides (RN) are generated by a wide range of industrial and medical activities. In the contexts waste storage, quantification RN migration is paramount importance. partly ruled interaction with solid surfaces. Usually experiments conducted at various scales from laboratory to field in order measure retention retardation parameters radiotracers. Whereas this experimental approach mandatory tackle issue migration, understanding natural speciation stable isotopes that...
A robust method is described allowing the sequential separation of Hf and lanthanides from matrix elements silicate rocks or minerals. This based on a single chromatographic column filled with conventional cation-exchange DowexAG50W-X8 resin, hydrochloric, nitric sulfuric acids as eluting agents. Samples can be processed following same protocol, irrespective whether they were decomposed by high temperature fusion LiBO2 (ensuring thorough sample/tracer isotopic equilibration in molten glass,...