INSTITUTO DE INVESTIGACIONES FISICAS DE MAR DEL PLATA
Unidad Ejecutora - UE
Off-shell continuum distorted wave theory for positronium formation from noble gas atoms
P.A. MACRI; R.O. BARRACHINA
NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH B - BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Año: 2009 vol. 266 p. 393 - 393
The formation of ground-state positronium in collisions of positrons on noble gas atoms is considered. We report results obtained by means of the eikonal final statecontinuum distorted wave (EFSCDW) approximation for which off-shell distortion effects were taken into account. Comparison of the present theoretical total cross sections with experimental data reveals that distortion effects become important as the impact energy decreases.