Fine-Structure Parameters, Zeeman Splitting and Its Specific Features, and Gyromagnetic Ratios for Configurations 1sng (n = 5–10) of a Helium Atom

The fine-structure parameters are calculated by a semiempirical method for six configurations of a helium atom using new refined energy values. After diagonalization of second-rank energy-operator matrices (levels and ), the discrepancies between the calculated and experimental energy values are vir...

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Bibliographic Details
Published in:Optics and spectroscopy 2018-12, Vol.125 (6), p.815-825
Main Authors: Anisimova, G. P., Anisimov, Yu. I., Gorbenko, A. P., Dolmatova, O. A., Krylov, I. R., Tsygankova, G. A., Tchoffo, M.
Format: Article
Language:English
Subjects:
Configurations
Gyromagnetic ratio
Helium atoms
Lasers
Mathematical analysis
Optical Devices
Optics
Parameters
Photonics
Physics
Physics and Astronomy
Spectroscopy and Physics of Atoms and Molecules
Splitting
Zeeman effect
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Summary:The fine-structure parameters are calculated by a semiempirical method for six configurations of a helium atom using new refined energy values. After diagonalization of second-rank energy-operator matrices (levels and ), the discrepancies between the calculated and experimental energy values are virtually equal to zero. The main concern was with the study of the Zeeman structure in order to determine the gyromagnetic ratios for all four levels of configurations. This is topical because analogous experimental data are absent for the studied configurations. The gyromagnetic ratios can be calculated only in the linear region. This region has been established for all the considered configurations. The specific features of Zeeman splitting—crossings and anticrossings of magnetic sublevels—were also studied. The data obtained can serve as a guide for further experimental studies.
ISSN:0030-400X
1562-6911
DOI:10.1134/S0030400X18120020