Arrêt de service programmé du vendredi 10 juin 16h jusqu’au lundi 13 juin 9h. Pour en savoir plus
Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

K-shell and L-shell (e,3e) double ionization of beryllium by fast electron impact

Abstract :

We report fully differential cross sections for simultaneous double ionization of atomic beryllium by fast electron impact. We analyze separately the two ionization channels that leave the dication in either the 2s2 autoionizing excited state or its 1s2 bound ground state. For the double continuum, owing to the two slow emitted electrons, we employ the three-pairwise-Coulomb-interaction model (3C) along with the first Born approximation. Aiming to probe the hitherto largely unexplored role of the electron correlation in (e,3e), we determine and check fully correlated, compact analytical wave functions, satisfying all two-particle Kato cusp conditions for the four-electron Be initial state and the two-electron Be2+ final states, as well as other, much or little or noncorrelated, functions, issuing from either analytic global optimization or Hartree-Fock theory. We point out similarities or contrasts with trends observed in the double photoionization, allowing for parallels between (e,3e) and (γ,2e). Various numerical examples serve to navigate possible future experiments in the nonrelativistic regime of the ionization problem.

Type de document :
Article dans une revue
Liste complète des métadonnées
Contributeur : Okina Univ Angers Connectez-vous pour contacter le contributeur
Soumis le : mardi 9 novembre 2021 - 10:37:21
Dernière modification le : mercredi 10 novembre 2021 - 04:07:12




M. Becher, B. Joulakian, C. Le Sech, Michel Chrysos. K-shell and L-shell (e,3e) double ionization of beryllium by fast electron impact. Physical Review A, American Physical Society, 2008, 77 (5), Non spécifié. ⟨10.1103/PhysRevA.77.052710⟩. ⟨hal-03420382⟩



Consultations de la notice