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Your search keyword '"Carlot, G."' showing total 7 results
Start Over Author "Carlot, G." Topic [phys.nexp]physics [physics]/nuclear experiment [nucl-ex]
7 results on '"Carlot, G."'

1. Defect change in UO2 during ion irradiations using in situ TEM

Author

Onofri-Marroncle, C., Sabathier-Devals, C., Carlot, G., Palancher, H., Legros, M., Bachelet, C., Baumier, C., CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)

Subjects
[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Dislocations, Bubbles, Irradiation, UO2, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

2. Effect of cavities induced by ion implantation on rare gases diffusion in uranium dioxide

Author

Gerardin, M., Gilabert, E., Denis Horlait, Desgardin, P., Carlot, G., M-F, Barthe, CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Conditions Extrêmes et Matériaux : Haute Température et Irradiation (CEMHTI), Université d'Orléans (UO)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), CADARACHE, Bibliothèque, Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université d'Orléans (UO)

Subjects
[PHYS.NUCL] Physics [physics]/Nuclear Theory [nucl-th], [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

3. Helium precipitation study in UO$_2$ by Transmission Electron Microscopy

Author

Michel, A., Carlot, G., Sabathier-Devals, C., Onofri-Marroncle, C., Dumont, M., Cabie, M., CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut des Matériaux, de Microélectronique et des Nanosciences de Provence (IM2NP), Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Centre Pluridisciplinaire de Microscopie Electronique et de Microanalyse (AMU CP2M), Aix Marseille Université (AMU), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), and CADARACHE, Bibliothèque

Subjects
[PHYS.NUCL] Physics [physics]/Nuclear Theory [nucl-th], [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], TEM, Precipitation, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Helium, ComputingMilieux_MISCELLANEOUS, UO$_2$
Abstract

International audience

Published
2018

4. Release of fission products (Xe, Kr, I, Cs) implanted in polycrystalline UO2

Author

Chatain, S., Alpettaz, T., Carlot, G., Léchelle, J., amplexor, amplexor, CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)

Subjects
[PHYS.NUCL] Physics [physics]/Nuclear Theory [nucl-th], fission products release, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], UO2, mass spectrometry
Abstract

International audience; Under irradiations in nuclear reactors, the microstructure of oxide nuclear fuel changes. To improve the modeling of the UO2 fuel behavior under irradiation, it is necessary to understand the elementary mechanisms of fission products diffusion. Among them, rare gas Xenon and Krypton represent 30% of created elements and fission products such as Iodine and Caesium are corrosive for the clad. Our experimental work consists in the measurement of the fission products release kinetics by Knudsen cell mass spectrometry. For that, 8mm diameter-1 mm height fresh polycrystalline UO2 pellets are implanted with different concentrations in 129Xe, 83Kr, 127I, 133Cs to understand the effect of the fission products density on the diffusion. The release kinetics is studied either during the heating at a given rate from room temperature to about 2050DC (Figure) or during isothermal annealing every 100 DC from 100 to 1600 DC.

Published
2017

5. XAS study of U(1-y)PuyO2 solid solutions

Author

Martin, P., Grandjean, S., Valot, C., Carlot, G., Ripert, M., Blanc, P., Hennig, C., CEA-Direction de l'Energie Nucléaire (CEA-DEN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institute of Radiochemistry, amplexor, amplexor, and CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN))

Subjects
[PHYS.NUCL] Physics [physics]/Nuclear Theory [nucl-th], EXAFS, Actinide alloys and compounds, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], oxide materials, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], solid state reactions
Abstract

International audience; A new procedure for (U,Pu)O2 nuclear fuel manufacturing based on the oxalic co-precipitation of U(IV) and Pu(III) followed by the thermal conversion of the co-precipitate into oxide is under development. In order to fully investigate the ideality of solid solution with Pu content equal to 50, 30, 15 and 7 at.percent, XRD and XAS characterizations at uranium and plutonium LIII edges have been undertaken. Using XRD, a face centred cubic structure was observed in each case, and the cell parameter deduced obeys satisfactorily the Vegard-s law. However, EXAFS measurements moderate these results, only the (U0.5Pu0.5)O2 sample leads to the same conclusion as XRD. For the lower plutonium concentration, a disordered hyperstoichiometric structure (U1-yPuy)O2+x have been evidenced. In those compounds, cuboctahedral oxygen defects are only located around uranium atoms and not in the Pu environment. Thus, a much complex structure than suggested by the XRD is observed with certainly a non-random distribution of plutonium atoms into the uranium sites of the UO2+x structure

Published
2006

6. Utilisation des methodes nucleaires d'analyse par faisceaux d'ions pour l'etude de la diffusion de l'iode dans les gaines de combustibles

Author

Carlot, G., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Flores, Sylvie

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1999

7. Utilisation de l'implantation d'ions stables et radioactifs pour l'etude de la migration de l'iode dans les gaines de combustibles

Author

Carlot, G., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Flores, Sylvie

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1998

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