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

Günay Başar; Gönül Başar; L. Windholz; G.H. Guthöhrlein

doi:10.1016/j.jqsrt.2025.109799

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

Günay Başar
, Gönül Başar
, L. Windholz^*
, G.H. Guthöhrlein

^*Corresponding author for this work

Institute of Experimental Physics (5110)

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	109799
Number of pages	12
Journal	Journal of Quantitative Spectroscopy and Radiative Transfer
Volume	351
DOIs	https://doi.org/10.1016/j.jqsrt.2025.109799
Publication status	Published - Mar 2026

Keywords

Fine structure
Hyperfine structure
Laser Spectroscopy
Line classification
Praseodymium

ASJC Scopus subject areas

Radiation
Atomic and Molecular Physics, and Optics
Spectroscopy

Fields of Expertise

Sonstiges

Access to Document

10.1016/j.jqsrt.2025.109799Licence: CC BY 4.0

1-s2.0-S0022407325004613-mainFinal published version, 3.27 MBLicence: CC BY 4.0

Cite this

@article{b686e1026b5443f981dee22615a13ce8,

title = "Hyperfine structure investigation of spectral lines of the praseodymium atom in the visible spectral region",

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.",

keywords = "Praseodymium, Fine structure, Hyperfine structure, Line classification, Laser Spectroscopy, Fine structure, Hyperfine structure, Laser Spectroscopy, Line classification, Praseodymium",

author = "G{\"u}nay Ba{\c s}ar and G{\"o}n{\"u}l Ba{\c s}ar and L. Windholz and G.H. Guth{\"o}hrlein",

year = "2026",

month = mar,

doi = "10.1016/j.jqsrt.2025.109799",

language = "English",

volume = "351",

journal = "Journal of Quantitative Spectroscopy and Radiative Transfer",

issn = "0022-4073",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - Hyperfine structure investigation of spectral lines of the praseodymium atom in the visible spectral region

AU - Başar, Günay

AU - Başar, Gönül

AU - Windholz, L.

AU - Guthöhrlein, G.H.

PY - 2026/3

Y1 - 2026/3

N2 - 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.

AB - 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.

KW - Praseodymium

KW - Fine structure

KW - Hyperfine structure

KW - Line classification

KW - Laser Spectroscopy

KW - Fine structure

KW - Hyperfine structure

KW - Laser Spectroscopy

KW - Line classification

KW - Praseodymium

UR - https://www.scopus.com/pages/publications/105026129222

U2 - 10.1016/j.jqsrt.2025.109799

DO - 10.1016/j.jqsrt.2025.109799

M3 - Article

SN - 0022-4073

VL - 351

JO - Journal of Quantitative Spectroscopy and Radiative Transfer

JF - Journal of Quantitative Spectroscopy and Radiative Transfer

M1 - 109799

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

Fields of Expertise

Access to Document

Other files and links

Analyse der Fein- und Hyperfeinstruktur des neutralen Praseodym (Pr)

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

Abstract

Keywords

ASJC Scopus subject areas

Fields of Expertise

Access to Document

Other files and links

Projects

Analyse der Fein- und Hyperfeinstruktur des neutralen Praseodym (Pr)

Cite this