Abstract: Kinetic electron emission caused by the impact of singly charged Na ions upon the metal surfaces is analyzed in terms of the recently developed thermal hot-spot model, that heuristically describes the many-electron nature of the emission process. The model accounts for the exponential decrease of electron emission yields at projectile velocities below the thresholds of Auger processes. The agreement with experiments indicates that, in spite of its simplicity, the model well describes the basic physics of sub-threshold electron emission at lowest impact energies for Al and Au surfaces.
Kinetic electron emission from metal surfaces by slow Na+ ions
PISARRA M;SINDONA, Antonio;RICCARDI, Pierfrancesco;
2009-01-01
Abstract
Abstract: Kinetic electron emission caused by the impact of singly charged Na ions upon the metal surfaces is analyzed in terms of the recently developed thermal hot-spot model, that heuristically describes the many-electron nature of the emission process. The model accounts for the exponential decrease of electron emission yields at projectile velocities below the thresholds of Auger processes. The agreement with experiments indicates that, in spite of its simplicity, the model well describes the basic physics of sub-threshold electron emission at lowest impact energies for Al and Au surfaces.File in questo prodotto:
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