Inner-shell electron capture by impact of positron on the multi-electron atomic targets
Department of Physics and Isfahan Quantum Optics Group, Faculty of
Science, University of Isfahan, 8174673441
a e-mail: email@example.com
Received in final form: 22 December 2010
Published online: 25 March 2011
The first-order Coulomb-Born approximation has been applied to the study of positronium formation through K-shell electron capture in the collision of positron with multi-electron atomic targets. The single-zeta Roothaan-Hartree-Fock wave functions are used to describe the electron initial bound states. The differential and total cross sections are computed for the impact of positron on helium, carbon, neon, sodium and argon atoms, with the formation of positronium in its ground state. For helium atoms, the calculated total cross sections are compared with the available experimental data and other theoretical calculations. The comparison shows a good agreement between the present calculations and the measurements.
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2011