Abstract.
The M emission spectra of the heavy rare earth elements 67Ho, 68Er, 69Tm, 70Yb, and 71Lu were reinvestigated using wavelength dispersive spectrometry with a TAP crystal as the dispersing element. In order to resolve weak lines, which are near to the strong α and β lines/bands, the regions around these lines were additionally measured using the second order reflection. In this manner in total 54 M lines were observed of which only 19 are contained in Bearden’s compilation. A difference between the line positions of metals and oxides was observed only for the Mα line of 70Yb. This observation agrees with an earlier report of Fischer and Baun. The observed dependencies of the intensity ratios Mβ/Mα and Mζ/Mα on the atomic number Z reflect the increasing filling of the N7 subshell with increasing Z.
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Correspondence: Michael Wendt, Institut für Photonische Technologien e.V., Albert-Einstein-Str. 9, 07745 Jena, Germany
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Dellith, J., Wendt, M. The M emission spectra of the heavy rare earth elements 67 ≤ Z ≤ 71. Microchim Acta 161, 475–478 (2008). https://doi.org/10.1007/s00604-007-0873-1
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DOI: https://doi.org/10.1007/s00604-007-0873-1