Calculations of the Binding-Energy Differences for Highly-Charged Ho and Dy Ions

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The binding-energy differences for 163Hoq+">163Hoq+ and 163Dyq+">163Dyq+ ions with ionization degrees q=38">q=38, 39, and 40 are calculated. The calculations are performed using the large-scale relativistic configuration-interaction and relativistic coupled-clusters methods. The contributions from quantum-electrodynamics, nuclear-recoil, and frequency-dependent Breit-interaction effects are taken into account. The final uncertainty does not exceed 1 eV. Combining the obtained results with the binding-energy difference for neutral atoms calculated in [I.M. Savelyev, M.Y. Kaygorodov, Y.S. Kozhedub, I.I. Tupitsyn, and V.M. Shabaev, Phys. Rev. A 105, 012806 (2022)], we get the secondary differences of the ion–atom binding energies. These values can be used to evaluate the amount of energy released in the electron capture process in 163Ho">163Ho atom (the Q value), provided mass differences of highly charged ions 163Hoq+">163Hoq+ and 163Dyq+">163Dyq+ is known from experiment. The Q value is required by experiments on the determination of the absolute scale of the electron neutrino mass by studying the beta-decay process.

作者简介

I. Savel'ev

Department of Physics, St. Petersburg State University

Email: savelevigorm@gmail.com
St. Petersburg, 199034 Russia

M. Kaygorodov

Department of Physics, St. Petersburg State University

Email: savelevigorm@gmail.com
St. Petersburg, 199034 Russia

Yu. Kozhedub

Department of Physics, St. Petersburg State University

Email: savelevigorm@gmail.com
St. Petersburg, 199034 Russia

I. Tupitsyn

Department of Physics, St. Petersburg State University

Email: savelevigorm@gmail.com
St. Petersburg, 199034 Russia

V. Shabaev

Department of Physics, St. Petersburg State University;Konstantinov Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute

编辑信件的主要联系方式.
Email: savelevigorm@gmail.com
St. Petersburg, 199034 Russia;Gatchina, 188300 Russia

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