The fate of Eu(III)/Cm(III) during the nucleation and growth of celestite (SrSO₄) and strontianite (SrCO₃)

The present PhD thesis addresses the (i) homogeneous and (ii) heterogeneous nucleation and growth of celestite (SrSO4) and strontianite (SrCO3) as well as (iii) the fate of trivalent curium and europium during sorption or incorporation in celestite or strontianite. Celestite and strontianite were chosen as model minerals to investigate the kinetics of formation of secondary phase minerals susceptible to affect long-term safety of deep geological repositories for high-level radioactive waste.