Binary encounter approximation treatment of collisions within the atomic structure

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Abstract
Presents a method of determining the regions of atoms (using classical mechanics) in which, for a given type of collision by a charged particle, excitation or ionisation of the atomic electrons can occur. Calculations have been performed for ionisation and excitation processes using the classical binary encounter approximation. Two classical models of the atomic orbit are taken into account and three different approaches to the treatment of the collision between the atomic electron and a projectile are analysed. Numerical results are presented as the plots of the regions (called 'active'), where the ionisation and excitation processes may occur. Applications for the theoretical analysis are also shown.