We report energy distributions of electrons emitted from AI surfaces under impact by 1 keV Ar+ and 1-5 keV Ne+ ions. The Variation of the energy distributions with the angle of incidence is different for both ions and provides information on the mechanism responsible for electron emission. For Ar+ electron emission results mainly from Auger neutralization, while for Ne+ an important emission mechanism is the decay of plasmon excitations. We find a transition between surface and bulk plasmon excitations as the energy of the ion is increased.
Angular studies of potential electron emission in the interaction of slow ions with Al surfaces
RICCARDI, Pierfrancesco;BONANNO A;
2000-01-01
Abstract
We report energy distributions of electrons emitted from AI surfaces under impact by 1 keV Ar+ and 1-5 keV Ne+ ions. The Variation of the energy distributions with the angle of incidence is different for both ions and provides information on the mechanism responsible for electron emission. For Ar+ electron emission results mainly from Auger neutralization, while for Ne+ an important emission mechanism is the decay of plasmon excitations. We find a transition between surface and bulk plasmon excitations as the energy of the ion is increased.File in questo prodotto:
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