Post-collision interactions and the polarization effect in (e, 2e) collisions of helium  

作　　者：臧爽爽 葛自明 

机构地区：[1]Department of Physics,East China University of Science and Technology

出　　处：《Chinese Physics B》2012年第7期280-284,共5页中国物理B（英文版）

摘　　要：A modified distorted-wave Born approximation （DWBA） method is used to calculate the triple differential cross sections （TDCSs） in a coplanar asymmetric geometry for the electron impact single ionization of a He （ls2） atom at intermediate and lower energies. The post-collision interaction and the polarization effect in （e, 2e） collisions of helium are considered in the calculations. The polarization potentials from the damping method and density functional theory （DFT） are compared. Theoretical results are compared with the recent experimental data.A modified distorted-wave Born approximation （DWBA） method is used to calculate the triple differential cross sections （TDCSs） in a coplanar asymmetric geometry for the electron impact single ionization of a He （ls2） atom at intermediate and lower energies. The post-collision interaction and the polarization effect in （e, 2e） collisions of helium are considered in the calculations. The polarization potentials from the damping method and density functional theory （DFT） are compared. Theoretical results are compared with the recent experimental data.

关 键 词：post collision interactions polarization potential density-functional theory （DFT） dis-torted wave Born approximation （DWBA） 

分 类 号：O562.5[理学—原子与分子物理]