Ionization potentials and electron affinities of Rg, Cn, Nh, and Fl superheavy elements

Authors :: Kaygorodov, M. Y.
Usov, D. P.
Eliav, E.
Kozhedub, Y. S.
Malyshev, A. V.
Oleynichenko, A. V.
Shabaev, V. M.
Skripnikov, L. V.
Titov, A. V.
Tupitsyn, I. I.
Zaitsevskii, A. V.
Publication Year :: 2022
Abstract: The successive ionization potentials (IPs) and electron affinities (EAs) for superheavy elements with $111 \leq Z \leq 114$, namely, Rg, Cn, Nh, and Fl are reexamined using the relativistic Fock-space coupled-cluster method with nonperturbative single (S), double (D), and triple (T) cluster amplitudes (FS-CCSDT). For the most of considered quantities, the triple-amplitude contributions turn out to be important. The Breit and frequency-dependent Breit corrections are evaluated by means of the configuration-interaction method. The quantum-electrodynamics corrections to the IPs and EAs are taken into account within the model-QED-operator approach. The obtained results are within 0.10 eV uncertainty.<br />Comment: 10 pages, 6 tables

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