JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, vol.287, 2022 (SCI-Expanded)
Article / Article
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Artic & Antarctic Regions, Chemical Abstracts Core, Communication Abstracts, INSPEC, Metadex, Civil Engineering Abstracts
Hyperfine structure, Atomic thulium, Fourier-Transform spectroscopy, NIR, HIGH-RESOLUTION MEASUREMENTS, NUCLEAR MAGNETIC-MOMENT, EXCITED-STATES, CONFIGURATIONS, 4F125D6S2, LEVEL
Istanbul Technical University Affiliated:
In this study, we investigated the hyperfine structure of 43 spectral lines of atomic thulium. We analyzed Fourier-transform spectra in the wavelength range from 700 nm to 2250 nm, which corresponds to the wavenumber range from 14300 cm(-1) to 4440 cm(-1), respectively. The excited thulium atoms were generated in a hollow-cathode lamp. As a result of this investigation, the magnetic-dipole hyperfine constant A of 17 fine structure levels have been determined experimentally, 14 of them for the first time. The magnetic-dipole hyperfine constant values of the three remaining levels, reported in the literature, differed significantly from the results of our determination. (C) 2022 Elsevier Ltd. All rights reserved.