Artículos de revistas
Neutralization mechanisms in He+-Al surface collisions
Fecha
2007-10Registro en:
Bajales Luna, Noelia; Ferron, Julio; Goldberg, Edith Catalina; Neutralization mechanisms in He+-Al surface collisions; Elsevier Science; Applied Surface Science; 254; 1; 10-2007; 401-404
0169-4332
CONICET Digital
CONICET
Autor
Bajales Luna, Noelia
Ferron, Julio
Goldberg, Edith Catalina
Resumen
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 understand the presence of high energy electrons in the ion induced electron emission spectra, through the inclusion of Auger deexcitation as an electron emission source, as well as to suggest a possible cause for the disagreement still found between theory and experiments in low energy ion scattering (LEIS) for this system.