TY - JOUR
T1 - On the correlation between primary damage and long-term nanostructural evolution in iron under irradiation
AU - Souidi, Abdelkader
AU - Hou, Marc
AU - Becquart, Charlotte
AU - Malerba, Lorenzo
AU - Domain, Christophe
AU - Stoller, Roger E.
A2 - Castin, Nicolas
N1 - Score = 10
PY - 2011/9
Y1 - 2011/9
N2 - Atomic displacement cascades in solids are complex phenomena, the outcome of which can be statistically characterised by properties such as their spatial extent, morphology and the spatial correlation of defects. Some properties scale in a simple way with parameters such as the cascade energy, others have
limited variability with energy, for example point defect cluster size distributions. Taking advantage of the latter invariance, we use object kinetic Monte Carlo simulations to demonstrate that most properties of displacement cascade play no significant role in the evolution of point defect cluster size distributions
after long enough time. It is suggested that reliable long-term predictions are possible, when using only the self-interstitial and vacancy cluster size distributions from low energy displacement cascades as building blocks to represent the complete spectrum of cascade energies obtained under neutron irradiation conditions. This is shown on the basis of recursive properties of displacement cascades evidenced for the first time and taking only approximately into account the average volumes in which vacancies and self-interstitial atoms are confined. The model has been successfully used to simulate the evolution of point defect clusters in iron.
AB - Atomic displacement cascades in solids are complex phenomena, the outcome of which can be statistically characterised by properties such as their spatial extent, morphology and the spatial correlation of defects. Some properties scale in a simple way with parameters such as the cascade energy, others have
limited variability with energy, for example point defect cluster size distributions. Taking advantage of the latter invariance, we use object kinetic Monte Carlo simulations to demonstrate that most properties of displacement cascade play no significant role in the evolution of point defect cluster size distributions
after long enough time. It is suggested that reliable long-term predictions are possible, when using only the self-interstitial and vacancy cluster size distributions from low energy displacement cascades as building blocks to represent the complete spectrum of cascade energies obtained under neutron irradiation conditions. This is shown on the basis of recursive properties of displacement cascades evidenced for the first time and taking only approximately into account the average volumes in which vacancies and self-interstitial atoms are confined. The model has been successfully used to simulate the evolution of point defect clusters in iron.
KW - kinetic Monte Carlo
KW - primary damage
KW - nanostructural evolution
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_115686
UR - http://knowledgecentre.sckcen.be/so2/bibref/8277
U2 - 10.1016/j.jnucmat.2011.08.049
DO - 10.1016/j.jnucmat.2011.08.049
M3 - Article
SN - 0022-3115
VL - 419
SP - 122
EP - 133
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1-3
ER -