The hyperfine structure of atomic manganese was studied with laser induced fluorescence spectroscopy and optogalvanic spectroscopy using a commercial hollow cathode discharge lamp and a fully automated single mode mid-infrared tunable laser diode system in the wavelength range from 1530~nm to 1610~nm. Five spectral lines has been analysed. Magnetic dipole hyperfine structure constants A for seven levels were determined by fitting the hyperfine structure using Voigt profile functions.
For two levels, the A constants were determined experimentally for the first time. For the other levels, the previously published hyperfine structure constants A could be confirmed and the accuracy of the values could be improved.
When comparing our two new experimental A-constants with calculated A-constants from the literature, which originate from a semi-empirical analysis of the odd parity levels in Mn, large deviations were found. Until now, experimental values were missing for a more precise calculation. Our new values offer the possibility for a future optimisation of the calculation.
Primary Language | English |
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Subjects | General Physics |
Journal Section | Research Articles |
Authors | |
Publication Date | June 20, 2023 |
Submission Date | April 30, 2023 |
Published in Issue | Year 2023 |