Volume 73, Number 1, January 2006
|Page(s)||21 - 27|
|Section||Atomic and molecular physics|
|Published online||23 November 2005|
Exchange on ionization in -atom scattering
Department of Physics, Indian Institute of Technology Roorkee Roorkee 247667, Uttaranchal, India
Corresponding authors: email@example.com firstname.lastname@example.org
Accepted: 31 October 2005
An improvement of the Coulomb-Born approximation is made including the effect of exchange in positronium (Ps) and atom scattering. The exchange amplitude for the simplest Ps-H system is a nine-dimensional integral. We developed a methodology of evaluating the Coulomb-Born-Oppenheimer amplitude for Ps-atom scattering and apply it to calculate the Ps-ionization cross-sections in Ps-H and Ps-He collisions. We present the first and preliminary results using the present methodology.
PACS: 36.10.Dr – Positronium, muonium, muonic atoms and molecules / 34.70.+e – Charge transfer / 82.30.Gg – Positronium chemistry
© EDP Sciences, 2005
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