Influence of electron correlations on double-capture process in proton helium collisions

doi:10.1088/1674-1056/24/7/073401

中国物理B ›› 2015, Vol. 24 ›› Issue (7): 73401-073401.doi: 10.1088/1674-1056/24/7/073401

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Influence of electron correlations on double-capture process in proton helium collisions

Hoda Ghavaminia, Ebrahim Ghanbari-Adivi

Department of Physics, Faculty of Sciences, University of Isfahan, Isfahan 81746-73441, Iran

收稿日期:2015-02-10 出版日期:2015-07-05 发布日期:2015-07-05

Influence of electron correlations on double-capture process in proton helium collisions

Hoda Ghavaminia, Ebrahim Ghanbari-Adivi

Department of Physics, Faculty of Sciences, University of Isfahan, Isfahan 81746-73441, Iran

Received:2015-02-10 Online:2015-07-05 Published:2015-07-05
Contact: Ebrahim Ghanbari-Adivi E-mail:ghanbari@phys.ui.ac.ir

摘要/Abstract

摘要： The first-order correct-boundary Coulomb–Born distorted-wave approximation is used to study the double-electron capture by protons from the ground-state helium atoms at intermediate and high impact energies. The differential double capture cross sections are obtained as a function of the projectile scattering angle and the total cross sections as a function of the impact energy. In the considered range of impact energy, our calculation shows that although the results are not so sensitive to the static inter-electronic correlations in the initial channel, the strong final-state correlations have a large effect on the magnitudes of the double capture cross sections. The calculated differential and integral cross sections are compared with their available experimental values. The comparison shows a good agreement between the present calculations and the measurements. The comparison of the integral cross sections shows that the present approach is compatible with other theories.

关键词: Coulomb-Born approximation, double-electron capture, Coulomb boundary conditions, differential and total cross sections

Abstract: The first-order correct-boundary Coulomb–Born distorted-wave approximation is used to study the double-electron capture by protons from the ground-state helium atoms at intermediate and high impact energies. The differential double capture cross sections are obtained as a function of the projectile scattering angle and the total cross sections as a function of the impact energy. In the considered range of impact energy, our calculation shows that although the results are not so sensitive to the static inter-electronic correlations in the initial channel, the strong final-state correlations have a large effect on the magnitudes of the double capture cross sections. The calculated differential and integral cross sections are compared with their available experimental values. The comparison shows a good agreement between the present calculations and the measurements. The comparison of the integral cross sections shows that the present approach is compatible with other theories.

Key words: Coulomb-Born approximation, double-electron capture, Coulomb boundary conditions, differential and total cross sections

中图分类号: (Charge transfer)

34.70.+e

Hoda Ghavaminia, Ebrahim Ghanbari-Adivi. Influence of electron correlations on double-capture process in proton helium collisions[J]. 中国物理B, 2015, 24(7): 73401-073401.

Hoda Ghavaminia, Ebrahim Ghanbari-Adivi. Influence of electron correlations on double-capture process in proton helium collisions[J]. Chin. Phys. B, 2015, 24(7): 73401-073401.

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Influence of electron correlations on double-capture process in proton helium collisions

Influence of electron correlations on double-capture process in proton helium collisions

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