Parlatan, ŞeymaÖztürk, İpek KanatBaşar, GönülBaşar, GünayFerber, RuvinKroger, Sophie2022-05-312022-05-312022Parlatan, Öztürk, İ. K., Başar, G., Başar, G., Ferber, R., & Kröger, S. (2022). Experimental investigation of the hyperfine structure of tm I with fourier transform spectroscopy, part A: In the visible wavelength range (400–700 nm). Journal of Quantitative Spectroscopy and Radiative Transfer, 287 doi:10.1016/j.jqsrt.2022.1081950022-4073https://doi.org/10.1016/j.jqsrt.2022.108195https://hdl.handle.net/20.500.12713/2758The 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 Ltdeninfo:eu-repo/semantics/openAccessFourier Transform SpectroscopyHyperfine StructureThuliumVisible Wavelength RangeArticle287WOS:0008328972000022-s2.0-85130141489Q210.1016/j.jqsrt.2022.108195Q2