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Broadening effects in Auger neutralization of 130–430 eV Ar ions at Al surfaces |
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| Authors: | A Sindona RA Baragiola S Maletta G Falcone A Oliva P Riccardi |
| Affiliation: | aDipartimento di Fisica, Università della Calabria, Via P. Bucci 31C, 87036 Rende (CS), Italy bUnità dell’istituto Nazionale di Fisica della materia (INFM) di Cosenza, Via P. Bucci 30C, 87036 Rende (CS), Italy cLaboratory for Atomic and Surface Physics, University of Virginia, Engineering Physics, Charlottesville, VA 22901, USA |
| Abstract: | We present a model for electron emission from Al surfaces by Auger neutralization of 130–430 eV Ar+ ions, that includes the singular response of the metal conduction band to the abrupt change of the surface potential caused by electron capture by the incident ion. This effect, previously identified in X-ray studies, produces a broadening that plays a significant role in reproducing the higher energy part of the experimental electron kinetic energy distributions. |
| Keywords: | Ion beam impact and interactions with surfaces Electron emission and Auger neutralization Charge transfer Theories and models of many-electron systems |
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