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Positron annihilation induced Auger electron spectrometer
Positron annihilation induced Auger electron spectroscopy (PAES) is a newly developed
application for surface studies with high elemental selectivity and exceptional surface sensitivity. The instrument is operated by the Technische Universität München and is located at NEPOMUC.
In PAES, the emission of Auger electrons is initiated by positron-electron annihilation that leads to several major advantages compared with conventional electron induced AES. The main features are:
PAES is part of the surface spectrometer (SuSpect) which also enables sample preparation in UHV conditions, conventaional AES and XPS. Examples for PAES studies are surfaces with sub-monolayers of foreign atoms, high resolution determination of Auger line shapes, element selective surface studies.
Typical measurement times
Prof. Dr. Christoph Hugenschmidt
Phone: +49 (0)89 289-14609
Phone: +49 (0)89 289-14774
Heinz Maier-Leibnitz Zentrum. (2015). PAES: Positron annihilation induced Auger electron spectrometer. Journal of large-scale research facilities, 1, A24. http://dx.doi.org/10.17815/jlsrf-1-51
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