info:eu-repo/semantics/article
Theory of ionization processes in positron-atom collisions
Fecha
2006-12Registro en:
Della Picca, Renata; Fiol, Juan; Barrachina Tejada, Raul Oscar; Rodríguez Chariarse, Vladimir Daniel; Theory of ionization processes in positron-atom collisions; Elsevier Science; Beam Interactions with Materials and Atoms; 247; 1 SPEC. ISS.; 12-2006; 52-57
0168-583X
CONICET Digital
CONICET
Autor
Della Picca, Renata
Fiol, Juan
Barrachina Tejada, Raul Oscar
Rodríguez Chariarse, Vladimir Daniel
Resumen
We review past and present theoretical developments in the description of ionization processes in positron-atom collisions. Starting from an analysis that incorporates all the interactions in the final state on an equal footing and keeps an exact account of the few-body kinematics, we perform a critical comparison of different approximations, and how they affect the evaluation of the ionization cross section. Finally, we describe the appearance of fingerprints of capture to the continuum, saddle-point and other kinematical mechanisms. © 2006 Elsevier B.V. All rights reserved.