Strong potential second Born theory for low-energy electron emission in asymmetric collisions
Institut für Kernphysik, University of Frankfurt, 60486 Frankfurt, Germany
Revised: 25 August 1999
Published online: 15 June 2000
The ejection of low-energy target electrons by heavy projectiles is calculated in a second Born approximation, allowing for propagation of the electrons in the strong projectile field. For neutral projectile impact this theory provides a satisfactory description of the collision process down to quite low impact velocities. This is shown by comparing the theory with experimental electron spectra from 0.1 MeV/amu Ne0 on He. However, when the projectile is charged the influence of its potential on the electronic final state may only be neglected for ejection of very low-energy electrons into the backward direction.
PACS: 34.50.Fa – Electronic excitation and ionization of atoms (including beam-foil excitation and ionization)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000