General information
Organisation
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.
Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.
The CEA is established in ten centers spread throughout France
Reference
SL-DRF-24-0532
Direction
DRF
Thesis topic details
Category
Condensed Matter Physics, chemistry, nanosciences
Thesis topics
Structural evolution under electron irradiation of lamellar hydroxydes and hydrates
Contract
Thèse
Job description
The societal context of the study is the optimization of cementitious matrices for nuclear waste conditioning. These cementitious matrices are composed of hydrated minerals, some of which are lamellar (portlandite Ca(OH)2, brucite Mg(OH)2, brushite CaHPO4.2H2O, gibbsite Al(OH)3...). Very few data exist in the literature on the structural damage of these hydrated lamellar minerals under electron irradiation. The aim of the proposed thesis is to experimentally investigate irradiation-induced structural modifications in various types of compounds, with a view to gaining a better understanding of the damage mechanisms of these compounds under irradiation, and to identify irradiation sensitivity criteria in order to ultimately optimize the chemical and mineralogical composition of the materials.
University / doctoral school
Ecole Doctorale de l’Institut Polytechnique de Paris (IP Paris)
Ecole Polytechnique
Thesis topic location
Site
Saclay
Requester
Position start date
01/10/2024
Person to be contacted by the applicant
De Noirfontaine Marie-Noelle 
marie-noelle.de-noirfontaine@polytechnique.edu
CNRS
DRF/IRAMIS/LSI
LSI,
Ecole polytechnique,
Route de Saclay,
91128 Palaiseau
Tutor / Responsible thesis director
De Noirfontaine Marie-Noelle marie-noelle.de-noirfontaine@polytechnique.edu
CNRS
DRF/IRAMIS/LSI
LSI,
Ecole polytechnique,
Route de Saclay,
91128 Palaiseau
En savoir plus
https://www.polytechnique.edu/annuaire/de-noirfontaine-marie-noelle
https://portail.polytechnique.edu/lsi/fr/recherche/defauts-desordre-et-structuration-de-la-matiere
