The behaviors of helium cluster and self-interstitial tungsten atom at different temperatures are investigated with molecular dynamics method. The self-interstitial tungsten atoms prefer to form crowdions which tightly binding the helium cluster at low temperature. The crowdion can change its position around the helium cluster through rotating and slipping at medium temperature, which leads to form combined crowdions or dislocation loop locating at one side of helium cluster. The combined crowdions or dislocation loop even separates from helium cluster at high temperature. It is found that the big helium cluster is more stable and it's interaction with crowdions or dislocation loop is more strong.

中文翻译：

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He簇大小对不同温度下自填隙钨原子相互作用的影响

用分子动力学方法研究了氦团簇和自填隙钨原子在不同温度下的行为。自填隙钨原子更喜欢在低温下形成紧密结合氦簇的簇。拥挤可以通过在中温下旋转和滑动来改变其在氦团周围的位置，从而导致形成位于氦团一侧的组合拥挤或位错环。组合的拥挤或位错环甚至在高温下与氦团簇分离。发现大氦团簇更稳定，与拥挤或位错环的相互作用更强。