Full electron description of antiproton collisions with neon and argon atoms in the keV energy range
Résumé
We investigate keV-collisions between antiproton and the rare gas atoms neon and argon. We use a correlated approach in which the 8 electrons from the L-shell of neon and M-shell of argon are active and up to two-electron processes are included, going thus beyond the approximate theoretical approaches used so far. Our results show that the electronic correlation plays a major role in the single and double ionization processes. Furthermore, we show that two-electron processes contribute significantly to the electronic stopping power. These results apply to both target atoms studied in this work and we therefore conclude that a correlated approach is in general necessary to obtain accurate antiproton electronic stopping power cross sections. Our work paves the way to a better understanding and knowledge of antiproton collision physics.
Domaines
Physique [physics]Origine | Fichiers produits par l'(les) auteur(s) |
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