INTEC   05402
INSTITUTO DE DESARROLLO TECNOLOGICO PARA LA INDUSTRIA QUIMICA
Unidad Ejecutora - UE
artículos
Título:
High energy excitations in ion-induced electron emission from AlF3
Autor/es:
G. RUANO; R. VIDAL; J FERRÓN; R BARAGIOLA
Revista:
SURFACE SCIENCE
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2011 vol. 605 p. 1807 - 1811
ISSN:
0039-6028
Resumen:
Measurements of electron emission spectra from surfaces of aluminum fluoride impacted by keV noble gas ions show a high-energy structure, peaking around 7 eV that increases in intensity with ion energy. The shape of this structure, identified by Factor Analysis, is independent of the nature and the energy of the impinging ions. We discuss one electron, two electron and plasmon excitation mechanisms and conclude that the high-energy structure results from the autoionization of F− 2p4nl n′l′ excited by electron promotion in close atomic collisions.