Hyperfine structure studies of the odd-parity electronic levels in the holmium (cas 15700-49-9) atom. II: New levels

Add time:09/06/2019    Source:sciencedirect.com

This work is devoted to investigations of unclassified spectral lines in atomic holmium (cas 15700-49-9), aiming at identification of new electronic levels and determination of their hyperfine structure. Altogether 113 unclassified lines were investigated with the method of laser induced fluorescence in a hollow cathode discharge lamp. As a result, 35 odd-parity electronic levels with previously unknown energies were identified; for all of them the hyperfine structure constants A and B were also determined. The data reported greatly facilitated the semi-empirical fit of the fine and hyperfine structure of the odd-parity level system, performed in our group.

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