Projectile angular-differential cross sections for single electron transfer in fast He+-He collisions

doi:10.1088/1674-1056/24/3/033401

›› 2015, Vol. 24 ›› Issue (3): 33401-033401.doi: 10.1088/1674-1056/24/3/033401

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Projectile angular-differential cross sections for single electron transfer in fast He⁺-He collisions

Ebrahim Ghanbari-Adivi, Hoda Ghavaminia

Department of Physics and Isfahan Quantum Optics Group (IQOG), Faculty of Science, University of Isfahan, Isfahan 81746-73441, Iran

收稿日期:2014-09-10 修回日期:2015-01-19 出版日期:2015-03-05 发布日期:2015-03-05

Projectile angular-differential cross sections for single electron transfer in fast He⁺-He collisions

Ebrahim Ghanbari-Adivi, Hoda Ghavaminia

Department of Physics and Isfahan Quantum Optics Group (IQOG), Faculty of Science, University of Isfahan, Isfahan 81746-73441, Iran

Received:2014-09-10 Revised:2015-01-19 Online:2015-03-05 Published:2015-03-05
Contact: Ebrahim Ghanbari-Adivi E-mail:ghanbari@phys.ui.ac.ir

摘要/Abstract

摘要： The four-body Coulomb-Born distorted wave approximation is applied to investigate the integral as well as projectile angular-differential cross sections for single-electron capture in the collision of energetic singly positive charged helium ions with helium atoms in their ground states. The formalism satisfies the correct boundary conditions. The influence of the dynamic electron correlations on the cross sections is studied by considering the inter electronic interactions in the complete perturbation potentials in post form. Also, the sensitivity of the cross sections to the static electronic correlations is studied by using the single-zeta and the highly correlated Byron-Joachain wave functions to describe the initial bound state of the active electrons. The obtained results for the energy range of 40-5000 keV/amu are reported and compared with other three- and four-body theoretical data and available experimental measurements. The comparison leads us to discuss the validity of the applied approach and survey the interaction effects on the cross sections by recognizing the electron- electron interaction. Particularly, for differential cross sections, the comparison of the present four-body method with the experiment shows that the agreement is not as good as that for its three-body version.

关键词: Coulomb-Born distorted-wave approximation, four-body approximation, Coulomb boundary conditions, differential and total cross sections

Abstract: The four-body Coulomb-Born distorted wave approximation is applied to investigate the integral as well as projectile angular-differential cross sections for single-electron capture in the collision of energetic singly positive charged helium ions with helium atoms in their ground states. The formalism satisfies the correct boundary conditions. The influence of the dynamic electron correlations on the cross sections is studied by considering the inter electronic interactions in the complete perturbation potentials in post form. Also, the sensitivity of the cross sections to the static electronic correlations is studied by using the single-zeta and the highly correlated Byron-Joachain wave functions to describe the initial bound state of the active electrons. The obtained results for the energy range of 40-5000 keV/amu are reported and compared with other three- and four-body theoretical data and available experimental measurements. The comparison leads us to discuss the validity of the applied approach and survey the interaction effects on the cross sections by recognizing the electron- electron interaction. Particularly, for differential cross sections, the comparison of the present four-body method with the experiment shows that the agreement is not as good as that for its three-body version.

Key words: Coulomb-Born distorted-wave approximation, four-body approximation, Coulomb boundary conditions, differential and total cross sections

中图分类号: (Charge transfer)

34.70.+e

Ebrahim Ghanbari-Adivi, Hoda Ghavaminia. Projectile angular-differential cross sections for single electron transfer in fast He⁺-He collisions[J]. , 2015, 24(3): 33401-033401.

Ebrahim Ghanbari-Adivi, Hoda Ghavaminia. Projectile angular-differential cross sections for single electron transfer in fast He⁺-He collisions[J]. Chin. Phys. B, 2015, 24(3): 33401-033401.

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Projectile angular-differential cross sections for single electron transfer in fast He⁺-He collisions

Projectile angular-differential cross sections for single electron transfer in fast He⁺-He collisions

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