First-principles study of fission product stability and clustering in ThO2

doi:10.1016/j.commatsci.2017.05.038

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	First-principles study of fission product stability and clustering in ThO2
	Shao, K; Han, H; Zhang, W; Wang, H; Wang, CY; Guo, YL; Ren, CL; Huai, P
刊名	COMPUTATIONAL MATERIALS SCIENCE
	2017
卷号	137 期号:-页码:186-194
关键词	Generalized Gradient Approximation Initio Molecular-dynamics Total-energy Calculations Wave Basis-set Ab-initio Uranium-dioxide Oxide Fuels Uo2 Diffusion Metals
ISSN号	0927-0256
DOI	10.1016/j.commatsci.2017.05.038
文献子类	期刊论文
英文摘要	The stability and clustering behavior of fission products (Zr, Mo, Ru, and Rh) in thorium dioxide have been investigated by density functional theory. The calculations were performed considering the possible insertion sites in ThO2, including interstitial sites, thorium vacancies, oxygen vacancies, the oxygen-thorium divacancy, and three types of Schottky defect. The thorium vacancy is the most energetically favorable trap site for all of these fission products. Zr and Mo can exist as oxide precipitates whereas Rh and Ru tend to form metallic clusters in Tho(2). Moreover, Ru and Rh dimers are the most stable clusters in the Schottky defect in ThO2, suggesting that metal clusters in ThO2 may be formed of these dimers trapped in Schottky defects. (C) 2017 Elsevier B.V. All rights reserved.
WOS关键词	GENERALIZED GRADIENT APPROXIMATION ; INITIO MOLECULAR-DYNAMICS ; TOTAL-ENERGY CALCULATIONS ; WAVE BASIS-SET ; AB-INITIO ; URANIUM-DIOXIDE ; OXIDE FUELS ; UO2 ; DIFFUSION ; METALS
语种	英语
WOS记录号	WOS:000407184200022
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/28658]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Shao, K,Han, H,Zhang, W,et al. First-principles study of fission product stability and clustering in ThO2[J]. COMPUTATIONAL MATERIALS SCIENCE,2017,137(-):186-194.
APA	Shao, K.,Han, H.,Zhang, W.,Wang, H.,Wang, CY.,...&Huai, P.(2017).First-principles study of fission product stability and clustering in ThO2.COMPUTATIONAL MATERIALS SCIENCE,137(-),186-194.
MLA	Shao, K,et al."First-principles study of fission product stability and clustering in ThO2".COMPUTATIONAL MATERIALS SCIENCE 137.-(2017):186-194.