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arXiv · 2301.03154

Calculation of the hyperfine structure of Dy, Ho, Cf, and Es

Saleh O. Allehabi·V. A. Dzuba·V. V. Flambaum
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Abstract

A recently developed version of the configuration interaction (CI) method for open shells with a large number of valence electrons has been used to study two heavy atoms, californium (Cf, Z= 98) and einsteinium (Es, Z= 99). Motivated by experimental work to measure the hyperfine structure (HFS) for these atoms, we perform the calculations of the magnetic dipole HFS constants $A$ and electric quadrupole HFS constant $B$ for the sake of interpretation of the measurements in terms of nuclear magnetic moment $\mu$ and electric quadrupole moment $Q$. For verification of our computations, we have also carried out similar calculations for the lighter homologs dysprosium (Dy, Z= 66) and holmium (Ho, Z= 67), whose electronic structures are similar to Cf and Es, respectively. We have conducted a revision of the nuclear moments of some isotopes of Es leading to an improved value of the magnetic moment of $^{253}$Es [$\mu$($^{253}$Es) = 4.20(13)$\mu_N$].

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Saleh O. Allehabi, V. A. Dzuba, V. V. Flambaum. 2023-01-09. Calculation of the hyperfine structure of Dy, Ho, Cf, and Es. https://doi.org/10.1103/physreva.107.032805

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