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arXiv · 2310.08999

Comparison of theory and experiment for radiative characteristics in neutral thulium

Andrey I. Bondarev·Maris Tamanis·Ruvin Ferber·Gönül Başar·Sophie Kröger·Mikhail G. Kozlov·Stephan Fritzsche
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Abstract

Intensities in Tm I emission series originating from a common upper level are measured using a Fourier transform spectrometer. The derived relative transition probabilities within each series are compared to the theoretical predictions obtained from large-scale calculations that combine configuration interaction with many-body perturbation theory. Moreover, the Tm I spectrum recorded in an external magnetic field is analyzed. Our theoretical results well describe the current measurements and show no more than a two-fold difference from previous experimental data on absolute transition probabilities. Additionally, Landé g factors, hyperfine structure constants, and atomic electric quadrupole moments for several levels of interest are computed and compared to experimental observations, where available.

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Andrey I. Bondarev, Maris Tamanis, Ruvin Ferber, Gönül Başar, Sophie Kröger, Mikhail G. Kozlov, Stephan Fritzsche. 2023-12-19. Comparison of theory and experiment for radiative characteristics in neutral thulium. https://doi.org/10.1103/physreva.109.012815

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