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

doi:10.1088/1674-1056/21/7/073403

Abstract 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 (1s²) 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.

Keywords: post collision interactions polarization potential density-functional theory (DFT) distorted wave Born approximation (DWBA)

Received: 16 September 2011
Revised: 08 December 2011
Accepted manuscript online:

PACS:

34.80.Dp

(Atomic excitation and ionization)

Corresponding Authors: Ge Zi-Ming
E-mail: geziming@ecust.edu.cn

Cite this article:

Zang Shuang-Shuang(臧爽爽) and Ge Zi-Ming(葛自明) Post collision interactions and polarization effect in (e, 2e) collisions of helium 2012 Chin. Phys. B 21 073403

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

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