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Performance of a short “magnetic bottle” electron spectrometer

MPG-Autoren
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Lischke,  Toralf
Max-Planck-Institut für Plasmaphysik, EURATOM Association;
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Bradshaw,  Alex M.
Max-Planck-Institut für Plasmaphysik, EURATOM Association;
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Zitation

Mucke, M., Förstel, M., Lischke, T., Arion, T., Bradshaw, A. M., & Hergenhahn, U. (2012). Performance of a short “magnetic bottle” electron spectrometer. Review of Scientific Instruments, 83(6): 063106. doi:10.1063/1.4729256.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-000F-A58B-4
Zusammenfassung
In this article, a newly constructed electron spectrometer of the magnetic bottle type is described. The instrument is part of an apparatus for measuring the electron spectra of free clusters using synchrotron radiation. Argon and helium outer valence photoelectron spectra have been recorded in order to investigate the characteristic features of the spectrometer. The energy resolution (E/ΔE) has been found to be ∼30. Using electrostatic retardation of the electrons, it can be increased to at least 110. The transmission as a function of kinetic energy is flat, and is not impaired much by retardation with up to 80% of the initial kinetic energy. We have measured a detection efficiency of most probably 0.6 −0.1+0.05, but at least of 0.4. Results from testing the alignment of the magnet, and from trajectory simulations, are also discussed.