TEM-EELS analyses of protactinium

Autor: O Dieste, T Wiss, J-C Griveau, R J M Konings, G van der Laan, R Caciuffo

Publikováno v: Materials Research Express, Vol 6, Iss 2, p 026307 (2018)

A fragment of metallic protactinium (Pa) has been studied using a transmission electron microscope (TEM) equipped with an electron energy loss spectroscopy (EELS) detector. Bright and dark field TEM images have been acquired, and selective area elect

Externí odkaz: https://doaj.org/article/2cacb9fd02754cf0aa84cb8c2ac3329b

Charge Distribution in U1–xCexO2+y Nanoparticles

Autor: O. Dieste, A. Beck, Zsolt Varga, Damien Prieur, Karin Popa, Philippe Martin, Andreas C. Scheinost, Olaf Walter, Jean-François Vigier, Tonya Vitova

Publikováno v: Inorganic Chemistry. 60:14550-14556

In view of safe management of the nuclear wastes, a sound knowledge of the atomic-scale properties of U1-xMxO2+y nanoparticles is essential. In particular, their cation valences and oxygen stoichiometries are of great interest as these properties dri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9190750be257fce7d2c2b0bc5eefa996
https://doi.org/10.1021/acs.inorgchem.1c01071

Self-irradiation-induced disorder in (U 238Pu) O2

Autor: Rudy J. M. Konings, Jean-Yves Colle, Thierry Wiss, O. Dieste, Gianguido Baldinozzi, Emanuele De Bona, Marco Cologna

Publikováno v: MRS Advances
MRS Advances, Cambridge University Press, 2021, 6, ⟨10.1557/s43580-021-00040-1⟩

International audience; 238Pu-doped UO2 was characterised periodically to investigate the long-term effects of α-self-irradiation on spent nuclear fuel. Samples of two compositions (1.25 and 5% wt 238Pu), were studied by means of X-ray diffraction (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c339c4cfc68850f63f0c64724b33e2d3
https://hal.archives-ouvertes.fr/hal-03224565

Effect of molybdenum on the behaviour of caesium in uranium dioxide at high temperature

Autor: R. Ducher, O. Dieste, R. Dubourg, Y. Pipon, C. Panetier, L. Sarrasin, A. Benedetti, D. Mangin, Thierry Wiss, Nathalie Moncoffre, Clotilde Gaillard

Publikováno v: J.Nucl.Mater.
J.Nucl.Mater., 2021, pp.152602. ⟨10.1016/j.jnucmat.2020.152602⟩

International audience; This study aims to evaluate the influence of a metallic fission product, molybdenum, on the behaviour of caesium in UO2 at high temperature (1600°C) under reducing atmosphere. Both elements were successively introduced by ion

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3eb7c9bfe5bf5ba45beb231868f3724d
https://hal.archives-ouvertes.fr/hal-03086807/document

Melting behaviour of uranium-americium mixed oxides under different atmospheres

Autor: Kathy Dardenne, O. Dieste, Damien Prieur, Christine Guéneau, J. Rothe, R.J.M. Konings, Dario Manara, Tonya Vitova, Philippe Martin, Thierry Wiss, E. Epifano

Publikováno v: The journal of chemical thermodynamics, 140, Article No.105896
Journal of Chemical Thermodynamics
Journal of Chemical Thermodynamics, 2019, 140, pp.105896. ⟨10.1016/j.jct.2019.105896⟩
The Journal of Chemical Thermodynamics, 140
The Journal of Chemical Thermodynamics 140(2020), 105896

In the context of a comprehensive campaign for the characterisation of transmutation fuels for next generation nuclear reactors, the melting behaviour of mixed uranium-americium dioxides has been experimentally studied for the first time by laser hea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::100a1fafa31e143c6518b703abcdf11f
http://resolver.tudelft.nl/uuid:7616cde9-44c8-450f-85cc-0a5ad2629893