计算物理 ›› 1992, Vol. 9 ›› Issue (S2): 719-720.

• 论文 • 上一篇    下一篇

低能原子簇轰击金薄膜的分子动力学模拟

潘正瑛   

  1. 中科院上海冶金所离子束开放实验室, 复旦大学物理二系, 上海 2004033
  • 收稿日期:1992-02-27 出版日期:1992-12-31 发布日期:1992-12-31
  • 基金资助:
    本工作得到国家自然基金资助

THE MOLECULAR DYNAMICS SIMULATION OF LOW ENERGY CLUSTERS IMPACTING ON GOLD THIN FILMS

Pan Zhengying   

  1. Physics Department 2, Fudan University, Shanghai, 200433 Ion beam Laboratory, Shanghai Institute of Metallurge Academia Sinica, Shanghai, China
  • Received:1992-02-27 Online:1992-12-31 Published:1992-12-31

摘要: 本文基于分子动力学模拟研究铝原子簇和碳原子簇轰击金薄膜的碰撞级联过程。注入原子簇的初始能量为(0.1~0.2)keV/atom。文中计算了薄膜中金原子的反冲能谱随时间的变化。结果表明,原子簇轰击后,金原子的反冲能量可高于两倍的两体碰撞最大反冲动能。该效应可用原子簇中原子与靶原子的多次碰撞及运动原子间的碰撞解释。

关键词: 原子簇, 分子动力学模拟, 碰撞级联

Abstract: The aluminum and carbon clusters impacting on gold thin films have been studied by molecular dynamics(MD) simulation. The initial energies are 0.1~0.2keV per atom. The energy spectra of target recoil atoms have been calculated as a function of time. It was shown that the target atoms may achieve more than twice of the maximum recoil energy in a single elastic collision. The effect has been traced to multiple hits by cluster atoms and the collisions between moving atoms.

Key words: cluster, molecular dynamics simulation, collision cascades