Nucleation and growth of intragranular defect and insoluble atom clusters in nuclear oxide fuels

被引:40
作者
Garcia, P. [1 ]
Martin, G. [1 ]
Sabathier, C. [1 ]
Carlot, G. [1 ]
Michel, A. [1 ]
Martin, P. [1 ]
Dorado, B. [2 ]
Freyss, M. [1 ]
Bertolus, M. [1 ]
Skorek, R. [1 ]
Noirot, J. [1 ]
Noirot, L. [1 ]
Kaitasov, O. [3 ]
Maillard, S. [1 ]
机构
[1] CEN Cadarache, DEN DEC, F-13108 St Paul Les Durance, France
[2] Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA
[3] Univ Paris 11, CNRS, CSNSM PCI, F-91405 Orsay, France
关键词
TEM; Irradiation; UO2; Defects; Precipitation; Clustering; Atomic scale modelling; FISSION-GAS RELEASE; HIGH-RESOLUTION TEM; HIGH BURNUP; MOLECULAR-DYNAMICS; RE-SOLUTION; DISPLACEMENT CASCADES; ELECTRON-MICROSCOPY; RADIATION-DAMAGE; XENON-DEPLETION; PORE FORMATION;
D O I
10.1016/j.nimb.2011.12.031
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Uranium and plutonium oxides are subjected to high levels of radiation damage due to the slowing of fission fragments. In addition the composition of the material evolves over time as a result of fission events. Rare gases which constitute an abundant class of fission products are particularly insoluble and therefore tend either to be released from the fuel or form small nanometre size clusters. Bubbles are liable to grow and become trapping sites for migrating defects or other insoluble atoms. Interactions between migrating atoms, defects and existing clusters will determine the rate and extent to which clusters grow. Because the transfer of gas from within the grain to the grain boundaries is thought of as being the rate limiting process for fission gas release, a review of phenomena occurring on the sub-grain scale is carried out. The microstructural modifications induced by neutron irradiations of UO2 fuels are discussed with an emphasis on their relation to fission gas release. Based mainly on TEM studies, the phenomena which are usually taken into account in fission gas behaviour models are looked at and the limitations of these models outlined. More recent experimental and modelling approaches involving ion-irradiation experiments and atomic scale modelling are presented. It is shown that combining these approaches may lead, despite the complexity inherent to the system, to a better understanding of basic radiation induced microstructural changes, clustering events, and rare gas behaviour. (C) 2012 Published by Elsevier B.V.
引用
收藏
页码:98 / 108
页数:11
相关论文
共 96 条
[1]   γ and β cerium:: LDA+U calculations of ground-state parameters [J].
Amadon, B. ;
Jollet, F. ;
Torrent, M. .
PHYSICAL REVIEW B, 2008, 77 (15)
[2]   Role of di-interstitial clusters in oxygen transport in UO2+x from first principles [J].
Andersson, D. A. ;
Watanabe, T. ;
Deo, C. ;
Uberuaga, B. P. .
PHYSICAL REVIEW B, 2009, 80 (06)
[3]   Cooperativity among defect sites in AO2+x and A4O9 (A=U,Np,Pu): Density functional calculations [J].
Andersson, D. A. ;
Lezama, J. ;
Uberuaga, B. P. ;
Deo, C. ;
Conradson, S. D. .
PHYSICAL REVIEW B, 2009, 79 (02)
[4]   HIGH-PRESSURE X-RAY-DIFFRACTION STUDY OF SOLID XENON AND ITS EQUATION OF STATE IN RELATION TO METALLIZATION TRANSITION [J].
ASAUMI, K .
PHYSICAL REVIEW B, 1984, 29 (12) :7026-7029
[6]  
Baker C., 1987, MAT NUCL REACTOR COR
[7]   Cluster dynamics modeling of materials: Advantages and limitations [J].
Barbu, A. ;
Clouet, E. .
MULTISCALE KINETIC MODELLING OF MATERIALS, 2007, 129 :51-+
[8]   Atomistic study of stability of xenon nanoclusters in uranium oxide [J].
Chartier, A. ;
Van Brutzel, L. ;
Freyss, M. .
PHYSICAL REVIEW B, 2010, 81 (17)
[9]   ROLE OF BUBBLES IN FISSION GAS RELEASE FROM URANIUM DIOXIDE [J].
CORNELL, RM ;
SPEIGHT, MV ;
MASTERS, BC .
JOURNAL OF NUCLEAR MATERIALS, 1969, 30 (1-2) :170-&