Abstract
The energy loss spectra of 30-keV Li7 + ions after interaction with argon and ethylene have been studied. Wien filters were used as monochromator and energy analyzer, an energy resolution of 0.2 eV was achieved.
The ion energy loss spectra obtained differ from those taken with electrons at the same primary energy mainly in two points: In the ion spectra energy losses are found with strong intensities corresponding to optically forbidden transitions which are not excited by fast electrons. Furthermore in the energy range beyond the first ionization limit energy losses appear which are due to charge transfer into excited states of the lithium atom and re-ionization.
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Herrn Professor Dr. H. Boersch danke ich für die Anregung zu dieser Arbeit und sein stetes förderndes Interesse. Herrn Priv.-Doz. Dr. J. Geiger danke ich für die Betreuung bei der Durchführung der Messungen und zahlreiche Diskussionen. Außerdem möchte ich Herrn Dipl.-Phys. R. Schliepe für die Hilfe beim Aufbau der Elektronik danken.
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Nicolai, R. Energieverluste monochromatisierter 30 keV-Lithiumionen an Argon und Äthylen. Z. Physik 228, 16–24 (1969). https://doi.org/10.1007/BF01392430
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DOI: https://doi.org/10.1007/BF01392430