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

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

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.

Keywords: Coulomb-Born approximation double-electron capture Coulomb boundary conditions differential and total cross sections

Received: 10 February 2015
Accepted manuscript online:

PACS:

34.70.+e

(Charge transfer)

Corresponding Authors: Ebrahim Ghanbari-Adivi
E-mail: ghanbari@phys.ui.ac.ir

Cite this article:

Hoda Ghavaminia, Ebrahim Ghanbari-Adivi Influence of electron correlations on double-capture process in proton helium collisions 2015 Chin. Phys. B 24 073401

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

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