Background Free Measurement of the Spectra of Low Energy Electrons Emitted as a Result of Auger Transitions in Metals

Details Background Free Measurement of the Spectra of Low Energy Electrons Emitted as a Result of Auger Transitions in Metals Background Free Measurement of the Spectra of Low Energy Electrons Emitted as a Result of Auger Transitions in Metals

2011-03-10

arxiv.org/abs/1103.2157v1

Physics

Condensed Matter

Materials Science

8 Pages, 7 figures

Scientific paper

Positron annihilation induced Auger electron spectroscopy was used to obtain Cu and Au Auger spectra that are free of primary beam induced background by impinging the positrons at energy below the secondary electron emission threshold. The removal of the core electron via annihilation in the PAES process resulted in the elimination of post-collision affects. The spectrum indicates that there is an intense low energy tail (LET) associated with the Auger peak that extends all the way to 0 eV. The LET has been interpreted as being due to processes in which the filling of the core by a valence electron results in the ejection of two or more valence electrons which share the energy of the otherwise Auger electron

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