Wannier threshold theory for the description of the two-electron cusp in the ion-induced double ionization of atoms

Authors
Barrachina Tejada, Raul Oscar; Gulyás, L.; Sarkadi, L.
Publication Year
2016
Language
English
Format
article
Status
Published version
Description
The double electron capture into the continuum states of the projectile (double ECC) is investigated theoretically in collisions of 100 keV He2+ ions with He atoms. The process is described within the framework of the impact parameter and frozen-correlation approximations where the single-electron events are treated by the continuum distorted wave method. On the other hand, the Wannier theory is employed for describing the angular correlation between both ejected electrons. This treatment substantially improved the agreement between the theory and experiment as compared to the previous version of the theory (Gulyás et al., 2010) in which the correlation between the ejected electrons was taken into account by the Coulomb density of states approximation.
Fil: Barrachina Tejada, Raul Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Universidad Nacional de Cuyo; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Gulyás, L.. Hungarian Academy of Sciences; Hungría
Fil: Sarkadi, L.. Hungarian Academy of Sciences; Hungría
Subject
ELECTRON CORRELATION
ELECTRON CUSP
THRESHOLD LAWS
WANNIER THEORY
Astronomía
Ciencias Físicas
CIENCIAS NATURALES Y EXACTAS
Access level
Restricted access
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/48230