TY  - JOUR
AU  - Kowalski, Piotr
AU  - Lange, Steve
AU  - Deissmann, Guido
AU  - Sun, Mengli
AU  - Kvashnina, Kristina O.
AU  - Baker, Robert
AU  - Kegler, Philip
AU  - Murphy, Gabriel
AU  - Bosbach, Dirk
TI  - Modeling of Nuclear Waste Forms: State-of-the-Art and Perspectives
JO  - MRS advances
VL  - 5
IS  - 5-6
SN  - 2059-8521
CY  - Cambridge
PB  - Cambridge University Press
M1  - FZJ-2020-00831
SP  - 213-222
PY  - 2020
AB  - Computational modeling is an important aspect of the research on nuclear waste materials. In particular, atomistic simulations, when used complementary to experimental efforts, contribute to the scientific basis of safety case for nuclear waste repositories. Here we discuss the state-of-the-art and perspectives of atomistic modeling for nuclear waste management on a few cases of successful synergy of atomistic simulations and experiments. In particular, we discuss here: (1) the potential of atomistic simulations to investigate the uranium oxidation state in mixed-valence uranium oxides and (2) the ability of cementitious barrier materials to retain radionuclides such as 226Ra and 90Sr, and of studtite/metastudtite secondary peroxide phases to incorporate actinides such as Np and Am. The new contribution we make here is the computation of the incorporation of Sr by C-S-H (calcium silicate hydrate) phases.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000524934700003
DO  - DOI:10.1557/adv.2020.38
UR  - https://juser.fz-juelich.de/record/873588
ER  -