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A semiclassical independent electron model for ion-atom collisions

✍ Scribed by Marko Horbatsch

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
992 KB
Volume
63
Category
Article
ISSN
0010-4655

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✦ Synopsis

A semiclassical model, based on the Vlasov equation, for the approximate calculation of capture and ionization processes in ion-atom collisions is described. The model relies on the impact parameter approximation and involves the calculation of the time-dependent single-electron distribution function in phase space at the level of h = 0. This is achieved through a test-particle discreti.zation. Emphasis in this paper is on a study of the electron emission spectra in highly energetic p-He collisions as well as the influence of the electronic motion on the deflection of the projectiles.

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A program is presented which calculates total and differential cross-sections for the ionisation of hydrogen-like targets by the impact of fully stripped ions. Any one of four theoretical descriptions can be used, namely. (i) the first Born approximation, (ii) the distorted wave born approximation,