Ionization and electron capture to the continuum in the H+-hydroqen-atom collision.

Abstract

The equivalence of the two-body interactions between the final particles of the ion-atom ionization process is considered in the T -matrix formalism. This defines a final wave function which is product of Coulomb waves and describes simultaneously the capture to the continuum and the direct ionization. The relation of that approach with the wave equation for the three-particle system and the asymptotic behavior are discussed. The doubly differential cross section for the ionization of hydrogen atoms by proton impact is calculated, in first order, and compared with experimental valúes.