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Updated: Jul 28, 2026

In Situ SIMS and IR Spectroscopy of Well-defined Surfaces Prepared by Soft Landing of Mass-selected Ions
Published on: June 16, 2014
Angular studies of potential electron emission in the interaction of slow ions with Al surfaces
1Laboratorio IIS, Dipartimento di Fisica, Universita della Calabria, and INFM Unita di Cosenza, 87036 Arcavacata di Rende, Cosenza, Italy.
Abstract:
We report energy distributions of electrons emitted from Al 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.
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