New odd-parity energy levels of the neutral lanthanum atom

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The discovery of 22 new energy levels of the La atom, having odd parity, is reported. These levels were derived from an analysis of unclassified spectral lines found either in optogalvanic spectra and/or Fourier transform spectra. The reliability of results obtained from the combination principle of Ritz was verified by hyperfine structure investigations. Further three new odd-parity levels of the first La ion are found. For two already known odd-parity levels substantial changes, concerning total angular momentum and hyperfine structure constants A, must be made.
Original languageEnglish
Article number107953
Number of pages7
JournalJournal of Quantitative Spectroscopy & Radiative Transfer
Publication statusPublished - Jan 2022

ASJC Scopus subject areas

  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

Fields of Expertise

  • Sonstiges

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