Molecular Dynamics Simulations of Helium Behaviour in Copper Crystals
WANG Ling, NING Xi-Jing
Institute of Modern Physics, Fudan University, Shanghai 200433
Molecular Dynamics Simulations of Helium Behaviour in Copper Crystals
WANG Ling;NING Xi-Jing
Institute of Modern Physics, Fudan University, Shanghai 200433
关键词 ：
02.70.Ns ,
05.60.-k ,
07.05.Tp
Abstract ： Molecular dynamics simulations are performed to investigate the behaviour of helium atoms generated from tritium decay in perfect Cu crystals at 300 K. At the early stage just after a 3 He atom generation, the lattice structure is badly deformed and the local temperature rises considerably above 300 K. Single 3 He atom diffuses by interstitial paths whereas two 3 He atoms attract each other and can form a stable dimmer, which pushes a Cu atom out of its original lattice site and occupies the vacancy. This dimmer can catch another 3 He atom and form a trimmer with an equilateral triangular structure.
Key words ：
02.70.Ns
05.60.-k
07.05.Tp
出版日期: 2003-09-01
:
02.70.Ns
(Molecular dynamics and particle methods)
05.60.-k
(Transport processes)
07.05.Tp
(Computer modeling and simulation)
引用本文:
WANG Ling;NING Xi-Jing. Molecular Dynamics Simulations of Helium Behaviour in Copper Crystals[J]. 中国物理快报, 2003, 20(9): 1416-1419.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2003/V20/I9/1416
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