Journal Article

PreJuSER-22162

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Electron energy loss spectrometers: An advanced operation mode for the lens system and the quantitative calculation of solid angle and transmission

Ibach, H.FZJ* ; Rajeswari, J.FZJ*

2012
Elsevier New York, NY [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.elspec.2012.01.001

Abstract: A new operation mode of the lens system in electron energy loss spectrometers is proposed which brings the cardinal plane of the lenses closer to the sample. Experiments as well as electron optical calculations show an intensity gain by a factor of 3-4. The required voltages on the lens elements are calculated as function of the impact energy at the sample. Furthermore, the lens system is characterized with respect to the solid angle probed by the spectrometer and the transmission which enables the evaluation of spectral intensities in terms of the absolute scattering probability for elastic and inelastic scattering. The results apply to most existing electron energy loss spectrometers as they stem from the same design and use identical lens systems. (C) 2012 Elsevier B.V. All rights reserved.

Keyword(s): J ; Electron energy loss spectrometers (auto) ; Electron optics (auto) ; New operation mode (auto) ; Surface vibration spectroscopy (auto) ; Surface spin waves (auto)

Note: One of the authors (J.R.) gratefully acknowledges the financial support from NRW Research School "Forschung mit Synchrotron-strahlung in den Nano- und Biowissenschaften".

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Contributing Institute(s):

1. Elektronische Eigenschaften (PGI-6)
2. Funktionale Nanostrukturen an Oberflächen (PGI-3)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2012

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Database coverage:
; Current Contents - Social and Behavioral Sciences ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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