Yazar "Kroger, Sophie" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim
    Öğe
    Experimental investigation of the hyperfine structure of Tm I with Fourier transform spectroscopy part b: In the NIR wavelength range from 700 nm to 2250 nm
    (PERGAMON-ELSEVIER SCIENCE, 2022) Kebapçı, Taha Yusuf; Sert, Sami; Parlatan, Şeyma; Öztürk, İpek Kanat; Başar, Gönül; Başar, Günay; Tamanis, Maris; Kroger, Sophie
    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.
  • Küçük Resim
    Öğe
    Experimental investigation of the hyperfine structure of Tm I with Fourier transform spectroscopy, part A: In the visible wavelength range (400–700 nm)
    (Elsevier, 2022) Parlatan, Şeyma; Öztürk, İpek Kanat; Başar, Gönül; Başar, Günay; Ferber, Ruvin; Kroger, Sophie
    The spectra emitted by a thulium hollow-cathode discharge lamp with argon or neon as inert gases have been recorded with a Bruker IFS 125 HR fourier transform spectrometer in the visible wavelength region from 400 to 700 nm. The paper presents the investigation of the hyperfine-structure splitting of 50 spectral lines of neutral thulium. As a result, the magnetic dipole hyperfine structure constant A for 20 fine structure levels of Tm I have been determined for the first time. © 2022 Elsevier Ltd