Europhys. Lett.
Volume 69, Number 2, January 2005
Page(s) 200 - 206
Section Atomic and molecular physics
Published online 15 December 2004
Europhys. Lett., 69 (2), pp. 200-206 (2005)
DOI: 10.1209/epl/i2004-10344-9

Single-electron capture from helium-like atomic systems by bare projectiles

I. Mancev

Department of Physics, Faculty of Sciences and Mathematics, University of Nis P.O. Box 224, 18000 Nis, Serbia

received 24 June 2004; accepted in final form 16 November 2004
published online 15 December 2004

The continuum-distorted-wave-Born-initial-state (CDW-BIS) approximation for the description of single-electron capture from helium-like atomic systems by completely stripped projectiles is presented. The theoretical total cross-sections for charge exchange in $\alpha$- $\chem{He}$ and $\chem{p}$- $\chem{Li^+}$ collisions are reported in the energy range 50-2000 $\un{keV/amu}$. We also report the results obtained by means of the continuum-distorted-wave-Born-final-state (CDW-BFS) approximation. Detailed computations for differential cross-sections are performed for $\chem{p}$- $\chem{He}$ collisions at 500 and 200 $\un{keV}$. A comparison between the four-body one-channel distorted-wave approximation and three-body distorted-wave (CDW-3B) approximation is made for differential cross-sections at 200 $\un{keV}$. The validity of our findings is critically assessed in comparison with the available experimental data.

34.70.+e - Charge transfer.

© EDP Sciences 2005