摘要
运用分子动力学方法研究了金属钛中氦的扩散聚集行为.在300—800K的温度范围内,模拟了钛基底中氦团簇之间的融合过程.研究发现,温度的升高会加快氦团簇的融合.在300—800K,融合后的氦团簇在所模拟的时间尺度内三维结构保持不变.模拟结果还表明,常温下氦团簇之间的吸引力是导致氦团簇融合的重要因素.
In this paper,the helium behavior in titanium crystals has been simulated by molecular dynamics method.The coalescence of helium clusters has been investigated in great detail in a range from 300 to 800 K.It was found that increasing temperature contributes to the coalescence of helium clusters.However,the helium cluster resulting from coalescence assumes its three-dimensional configuration in this temperature range for the time scale of simulation.The simulation results also indicate that,at room temperature,the attractive force between helium clusters plays a key role in helium cluster coalescence.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2008年第8期5159-5164,共6页
Acta Physica Sinica
基金
国家自然科学基金(批准号:10775101,50671096)资助的课题~~
关键词
氦团簇
团簇融合
分子动力学模拟
helium cluster,cluster coalescence,molecular dynamics simulation
