Ionization cross-sections for the L23-edges of the elements Sr to Mo for quantitative EELS analysis

Ferdinand Hofer, Gerald Kothleitner, Peter Rez

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Quantitative microanalysis by electron energy-loss spectrometry requires knowledge of partial inner-shell ionization cross-sections. Data for the L23-edges of the elements strontium to molybdenum are not well known. We have therefore measured cross-section ratios (k-factors) for the L23-edges of the elements Sr to Mo using thin film oxide-standards. The experimental values are compared with calculations derived from a modified hydrogenic and a Hartree-Slater model. The results are presented in terms of an integrated dipole oscillator strength to facilitate both comparisons between theory and experiment, and calculations of cross-sections for particular experimental conditions. While hydrogenic theory oscillator-strength values deviate from the experimental ones by more than 30%, there is good agreement between Hartree-Slater theory and experiment. We have also compared the relative microanalytical sensitivities for the M45- and L23-ionization edges of these elements.

Original languageEnglish (US)
Pages (from-to)239-245
Number of pages7
JournalUltramicroscopy
Volume63
Issue number3-4
DOIs
StatePublished - Jul 1996

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Electron energy loss spectroscopy
ionization cross sections
quantitative analysis
Ionization
oscillator strengths
Strontium
Molybdenum
Microanalysis
Chemical elements
Oxides
Spectrometry
Energy dissipation
Experiments
cross sections
microanalysis
strontium
Thin films
molybdenum
Electrons
energy dissipation

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation

Cite this

Ionization cross-sections for the L23-edges of the elements Sr to Mo for quantitative EELS analysis. / Hofer, Ferdinand; Kothleitner, Gerald; Rez, Peter.

In: Ultramicroscopy, Vol. 63, No. 3-4, 07.1996, p. 239-245.

Research output: Contribution to journalArticle

Hofer, Ferdinand ; Kothleitner, Gerald ; Rez, Peter. / Ionization cross-sections for the L23-edges of the elements Sr to Mo for quantitative EELS analysis. In: Ultramicroscopy. 1996 ; Vol. 63, No. 3-4. pp. 239-245.
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