https://doi.org/10.1140/epjd/e2006-00088-0
Primary electron spectra from swift heavy-ion impact
Scaling relations and estimates from modified Bohr theory
1
Physics Department, University of Southern Denmark, 5230 Odense M, Denmark
2
Institut für Experimentalphysik, Johannes-Kepler-Universität, 4040 Linz-Auhof, Austria
Corresponding author: a psi@dou.dk
Received:
18
January
2006
Revised:
6
March
2006
Published online:
20
April
2006
We have calculated single-differential energy spectra of electrons emitted in swift-ion-atom collisions on the basis of the classical Bohr theory allowing for various extensions. Special emphasis has been paid to scaling relationships which are inherent in the Bohr theory but would not emerge from simple Coulomb scattering or conventional binary-encounter theory. We consider electrons emitted from the target as well as the projectile. In addition to electron binding, which is known to be treated well in the Bohr theory, we allow for orbital motion of target and projectile electrons and apply a feasible description of the screened interaction of partially-stripped projectile ions. Predicted scaling laws as well as absolute estimates are compared with experimental data.
PACS: 34.50.Fa – Electronic excitation and ionization of atoms (including beam-foil excitation and ionization) / 52.20.Hv – Atomic, molecular, ion, and heavy-particle collisions / 79.20.Rf – Atomic, molecular, and ion beam impact and interactions with surfaces
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2006
