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Chin. Phys. B, 2015, Vol. 24(7): 073401    DOI: 10.1088/1674-1056/24/7/073401
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

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
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      Published:  05 July 2015
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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