Molecular dynamics simulation of collective behaviour of Xe in UO2

被引：16

作者：

Tian Xiao-Feng ^{[1
]}

Long Chong-Sheng ^{[2
]}

Zhu Zheng-He ^{[1
]}

Gao Tao ^{[1
]}

机构：

[1] Sichuan Univ, Inst Atom & Mol Phys, Chengdu 610065, Peoples R China

[2] Nucl Power Inst China, Natl Key Lab Nucl Fuel & Mat, Chengdu 610041, Peoples R China

来源：

CHINESE PHYSICS B | 2010年 / 19卷 / 05期

关键词：

uranium dioxide; molecular dynamics; bubble growth; swelling; URANIUM-DIOXIDE; RESOLUTION; BUBBLES; XENON; FUELS; ATOMS;

D O I：

10.1088/1674-1056/19/5/057102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This paper performs atomic simulations of the nucleation and growth of Xe bubble in UO2 at 1600 K. The bubble growth was simulated up to the bubble containing 50 Xe atoms. The Xe atoms were added directly to the bubble one by one, followed by a relaxation of the system for several picoseconds. The simulations estimated the bubble pressure and radius at different Xe concentrations. The results indicate that the bubble pressure drops with the increasing Xe/U and bubble size at low Xe concentration, while the pressure will increase with the Xe/U ratio at high Xe concentration. The swelling of the system associated with the bubble growth was also obtained. Finally, the recovery of the damaged structure was investigated.

引用

页码：0571021 / 0571026

页数：6

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