Simple ionization theory

This book offers a clear, in-depth study of collision theory as applied to the process of simple ionization by electron impact.The first part recalls the fundamental theoretical concepts required to analyze collisional processes, in particular the effective cross-section and the main approximations used to calculate it.The second part deals in detail with the mechanism of simple ionization ((e,2e)), specifying the associated kinematic conditions and the different types of studies of electron-ejected reactions. Molecular targets are described using monocentric wave functions, reducing the problem to a quasi-atomic situation and simplifying its mathematical treatment.The book also offers a rigorous introduction to modern tools of quantum collision dynamics, including the many-body problem, the Lippmann-Schwinger equation and current theoretical models used to interpret scattering phenomena.