Abstract

We accomplished the high-resolution study by LIBS and LIBS-MLIF techniques of molecular emission of REE in LIP to evaluate its suitability for the isotopic shift analysis. The GdO molecular is the best choice for natural isotope analysis by combining its molecular weight and emission spectra. The isotopic shifts depend on the specific vibrational transition and are in the range from tenths to several cm−1. For the artificially induced isotopes, the lightest REE (Sc and Y) may be the optimal candidates.

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