Neutralization mechanisms in He+ - Al surface collisions.

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

APPLIED SURFACE SCIENCE

Elsevier

Año: 2007 p. 401 - 404

0169-4332

From a quantum mechanical calculation where the populations of He ground and first excited states are properly taken into account, 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 explain experiments in Low Energy Ion Scattering (LEIS) for this system, and to understand the presence of energetic electrons in the ion induced electron emission spectra, through the inclusion of Auger deexcitation as an electron emission source.