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Molecular Dynamics Simulations of Helium Behaviour in Copper Crystals |
| WANG Ling;NING Xi-Jing |
| Institute of Modern Physics, Fudan University, Shanghai 200433 |
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| Cite this article: |
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WANG Ling, NING Xi-Jing 2003 Chin. Phys. Lett. 20 1416-1419 |
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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 3He atom generation, the lattice structure is badly deformed and the local temperature rises considerably above 300 K. Single 3He atom diffuses by interstitial paths whereas two 3He 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 3He atom and form a trimmer with an equilateral triangular structure.
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| Keywords:
02.70.Ns
05.60.-k
07.05.Tp
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Published: 01 September 2003
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| PACS: |
02.70.Ns
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(Molecular dynamics and particle methods)
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05.60.-k
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(Transport processes)
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07.05.Tp
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(Computer modeling and simulation)
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