物理化学学报 >> 1994, Vol. 10 >> Issue (12): 1099-1104.doi: 10.3866/PKU.WHXB19941209

研究论文 上一篇    下一篇

反散射理论导出He-Ne相互作用势

陈学俊, 王岩, 李以圭   

  1. 清华大学现代应用物理系电子动量谱学实验室，北京 100084|清华大学化学工程系，北京 100084
  • 收稿日期:1993-11-18 修回日期:1994-04-14 发布日期:1994-12-15
  • 通讯作者: 陈学俊

He-Ne Interatomic Potential from Inversion Scattering Theory

Chen Xue-Jun, Wang Yan, Li Yi-Gui   

  1. Laboratory of Electron Momentum Spectroscopy,Department of Modern Applied Physics,Tsinghua University,Beijing 100084|Department of Chemical Engineering,Tsinghua University,Beijing 100084
  • Received:1993-11-18 Revised:1994-04-14 Published:1994-12-15
  • Contact: Chen Xue-Jun

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摘要：

以He原子束与Ne原子束交叉碰撞实验数据为基础，以反散射方法为手段，理论上导出He－Ne原子相互作用势．所得的势呈显出van der Waals势的特征，即短程为强排斥，中程为碗形吸引，远程为零．这样的势能给出正确的、符合实验的弹性散射微分截面.

关键词: 原子相互作用势, 原子束交叉碰撞实验, 弹性散射微分截面, 反散射理论

Abstract:

Based on the experimental data of crossed collisions of He and Ne atomic beams, the He-Ne interatomic potential has been derived by the inversion scattering theory. The obtained potential exhihits proper characters of weak van der Waals potential, that is, strong repulsive in the short range, weak atrractive similar to bowl in the intermediate range and vanish in the long range. This potential can produce correct results in good agreement with experimental data.

Key words: Interatomic potential, Collision experiment of crossed atomic beams, Elastec differential cross section, Inversion scattering theory