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arXiv · 1903.03093

Many body study of the Bohr-Weisskopf effect in the thallium atom

S. D. Prosnyak·D. E. Maison·L. V. Skripnikov
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Abstract

We report the relativistic coupled cluster study of the hyperfine structure and effect of the nuclear magnetization distribution (Bohr-Weisskopf effect) in the $6P_{1/2}$, $6P_{3/2}$ and $7S_{1/2}$ states of several Tl isotopes. It is shown that the Gaussian basis set can be used in such electronic structure calculations and provide a good accuracy. For the ground electronic state of the neutral Tl atom achieved uncertainty for the hyperfine structure constant is smaller than 1\%. A strong Bohr-Weisskopf correction (about 16\%) was found for the $6P_{3/2}$ state which can be of interest for the nuclear structure theory. Basing on the theoretical treatment as well as the available experimental data nuclear magnetic moments of short lived ${}^{191}$Tl and ${}^{193}$Tl isotopes were also predicted.

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S. D. Prosnyak, D. E. Maison, L. V. Skripnikov. 2019-03-07. Many body study of the Bohr-Weisskopf effect in the thallium atom. https://arxiv.org/abs/1903.03093

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