Abstract.
The study covers a problem frequently encountered in the quantification of the results of wavelength-dispersive spectrometry (WDS) for the composition analysis of thin films. The characteristics of a Parallel Beam Spectrometer and traditional WDS systems were examined and olivine mineral – (Mg, Fe)2SiO4 (O – 44.03 wt%, Mg – 31.1 wt%, Si – 19.56 wt%, Fe – 5.06 wt%, Ni – 0.16 wt%, Mn – 0.09 wt%) was used as a reference material. Low accelerating voltage at 7 kV and beam current 400 nA were applied. Both methods yielded 30–35% of Mn. This is attributed to the overlapping of the MnLα first-order and the MgKα second-order lines. Studies of the influences of the second- and the third-order lines show that the second-order lines from Kα and Lα X-ray counts affected significantly the obtained WDS spectra when the influence of Mα counts was insignificant. Furthermore, the third-order lines did not have a marked effect on the analysis results.
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Mikli, V. Influence of Second-Order Lines on the Quantitative Wavelength Dispersive Spectrometry Analysis at Low Accelerating Voltages. Microchim Acta 155, 205–208 (2006). https://doi.org/10.1007/s00604-006-0544-7
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DOI: https://doi.org/10.1007/s00604-006-0544-7