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In this paper several possibilities of how to find previously unknown energy levels from high-resolution Fourier-transform or laser-generated spectra are discussed. As examples we use levels of neutral Ta, Pr and La. The following methods are used: analysis of Fourier-transform emission spectra, laser-excitation of unclassified spectral lines, analysis of the hyperfine structure of unclassified lines. The discovery of two new La I energy levels is reported.
|Number of pages||10|
|Publication status||Published - 18 Oct 2016|
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