Double-ionization mechanisms of magnesium driven by electron impact - Institut de Mathématiques de Marseille 2014- Accéder directement au contenu
Article Dans Une Revue Physical Review A Année : 2020

Double-ionization mechanisms of magnesium driven by electron impact

Résumé

We study double ionization of Mg by electron impact through the vantage point of classical mechanics. We consider all electron-electron correlations in a Coulomb four-body problem, where three electrons belong to the atom and the fourth electron causes the impact ionization. From our model we compute the double-ionization probability of Mg for impact energies from 15 to 125 eV. Double ionization occurs through eight double-ionization mechanisms, which we classify into four categories: inner shell capture, direct, delay, and ionized inner shell mechanisms. We show that delay and ionized inner shell mechanisms require electron-electron correlations among the four electrons, and are responsible for the second increase in the double-ionization probability. Furthermore, we show that our theoretical prediction about the relative prominence of certain double-ionization mechanisms is in agreement with experimental results on the relative prominence of non-first over first-order mechanisms.
Fichier principal
Vignette du fichier
1912.11877.pdf (2.49 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-02425736 , version 1 (20-09-2023)

Identifiants

Citer

Shivan Mittal, Jonathan Dubois, Cristel Chandre, Ahmet Turgay Uzer. Double-ionization mechanisms of magnesium driven by electron impact. Physical Review A, 2020, 101, pp.062707. ⟨10.1103/PhysRevA.101.062707⟩. ⟨hal-02425736⟩
54 Consultations
9 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More