Hyperfine structure investigation of spectral lines of the praseodymium atom in the visible spectral region

Başar G., BAŞAR G., Windholz L., Guthöhrlein G.

Journal of Quantitative Spectroscopy and Radiative Transfer, vol.351, 2026 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 351
  • Publication Date: 2026
  • Doi Number: 10.1016/j.jqsrt.2025.109799
  • Journal Name: Journal of Quantitative Spectroscopy and Radiative Transfer
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Artic & Antarctic Regions, Chemical Abstracts Core, Chimica, Compendex, Geobase, INSPEC
  • Keywords: Fine structure, Hyperfine structure, Laser Spectroscopy, Line classification, Praseodymium
  • Istanbul University Affiliated: Yes

Abstract

26 new energy levels (7 of even, 19 of odd parity) of Pr I were discovered using laser induced fluorescence (LIF) spectroscopy. Values of the magnetic hyperfine interaction constants A of these levels are presented. 57 known but up to now unclassified lines could be classified as transitions to the new levels. Moreover, 77 lines which were never mentioned in the literature but could be identified in our FT spectra, are classified. Finally, 62 other lines could be detected either as excitation or fluorescence channels, but too weak to appear in the FT spectra. For some lines the classification given in the literature appeared to be erroneous.