等离子体中Cu离子生长Cu纳米团簇的分子动力学模拟
Molecular dynamics simulation of growth of Cu nanoclusters from Cu-ions in a plasma
摘要：
利用分子动力学研究了脉冲等离子体中纳米团簇的生长。一个模型，允许一个考虑高能带电粒子在经典分子动力学的建议，并应用于研究的单次碰撞事件的纳米团簇生长。特别是，我们提供了一个比较分析的研究惰性气体聚集的方法和从离子在等离子体中的增长。强调了在模拟纳米团簇生长时考虑入射离子角分布的重要性。详细研究了从入射离子到纳米团簇的能量传递，以及入射离子在团簇表面的扩散。我们的研究结果是重要的理解和控制的纳米团簇生长过程。
英文摘要：
A recently developed method of nanoclusters growth in a pulsed plasma is studied by means of molecular dynamics. A model that allows one to consider high-energy charged particles in classical molecular dynamics is suggested, and applied for studies of single impact events in nanoclusters growth. In particular, we provide a comparative analysis of the well-studied inert gas aggregation method and the growth from ions in a plasma. The importance to consider of the angular distribution of incoming ions in the simulations of the nanocluster growth is underlined. A detailed study of the energy transfer from the incoming ions to a nanocluster, as well as the diffusion of incoming ions on the cluster surface is carried out. Our results are important for understanding and control of the nanocluster growth process.
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