Coulomb blockade in ion induced electron emission and neutralization mechanisms.

N. BAJALES; J. FERRON; E. C. GOLDBERG

APPLIED SURFACE SCIENCE

Año: 2006

0169-4332

From a quantum mechanical calculation where the populations of He ground and first excited states are properly taken into account, and the novel application of an old data treatment method to the measurements of electron emission from Al under He+ ion bombardment, we can identify for the first time the neutralization to the He first excited state as an operative mechanism in He-Al surface collisions.This identification allows us to fully understand the complete electron emission spectra through the inclussion of Auger deexcitation, and to find an explanation to the discrepancies between theory and experiments in Low Energy Ion Scattering (LEIS) for this system.