Electron-induced KLL Auger electron spectroscopy of Fe, Cu and Ge

M. R. Went, M. Vos

    Research output: Contribution to journalArticlepeer-review

    10 Citations (Scopus)

    Abstract

    KLL Auger spectra excited by electrons with energies in the 30-35keV range of Fe, Cu and Ge films were measured, using thin free-standing films. It was possible to obtain spectra with an energy resolution of about 1eV. The observed spectra can not be described satisfactorily by just the multiplet splitting of the final state as calculated for an isolated atom. Additional features, due in part to intrinsic (shake satellites) and in part to extrinsic (energy loss of the escaping electron) processes formed a large fraction on the observed intensities. In particular a number of distinct satellite structures that are not predicted by the atomic Auger process are observed. For Fe and Cu the satellite peaks can be explained in terms of shake-up processes from the 3d 5/2-4d5/2 states. Similar satellite structures observed in Ge are partly attributed to plasmon creation and partly to shake-up processes. It is demonstrated that both the thickness dependence of the observed intensity distributions and transmission electron energy loss measurements contain invaluable information for the interpretation of these spectra.

    Original languageEnglish
    Pages (from-to)107-114
    Number of pages8
    JournalJournal of Electron Spectroscopy and Related Phenomena
    Volume148
    Issue number2
    DOIs
    Publication statusPublished - Aug 2005

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