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Theses

Le rôle des interactions électroniques pour le processus d'ionisation d'atomes en collisions avec des ions

Abstract : In this thesis the effects of the electronic interactions in the single ionization process of atoms by multiply charged ions impact are studied. The projectiles considered are either fully stripped or partially dressed ions. In the case of fully stripped ions we study the interaction between the target active electron and the passive electrons distribution, the post version of the CDW-EIS (Continuum Distorted Wave-Eikonal Initial State) approximation is revisited and a residual potential neglected in all previous calculations is considered. Also a four-body distorted wave model is developed to investigate the single ionization of dielectronic atoms where both electrons are considered as active ones and evolving in the same time-frame. When considering partially dressed ions as projectiles we investigate the interaction between the target active electron and those bound to the projectile by means of the extension of the CDW-EIS and CDW (Continuum Distorted Wave) models to the case where the projectile is a dressed ion. The projectile potential is described by a analytic parametric GSZ (Green-Sellin-Zachor) one that can be separated in two terms : a long range term determined by the net chargeof the totally screened projectile and a short range term due to the electrons bound to the projectile
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Juan Manuel Monti. Le rôle des interactions électroniques pour le processus d'ionisation d'atomes en collisions avec des ions. Autre [cond-mat.other]. Université Paul Verlaine - Metz, 2011. Français. ⟨NNT : 2011METZ004S⟩. ⟨tel-01748809⟩

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