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

M. Y. Kaygorodov, D. P. Usov, E. Eliav, Y. S. Kozhedub, A. V. Malyshev, A. V. Oleynichenko, V. M. Shabaev, L. V. Skripnikov, A. V. Titov, I. I. Tupitsyn, A. V. Zaitsevskii

Research output: Contribution to journalArticlepeer-review

Abstract

The successive ionization potentials (IPs) and electron affinities (EAs) for superheavy elements with 111≤Z≤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 most of the 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.

Original languageEnglish
Article number062805
JournalPhysical Review A
Volume105
Issue number6
DOIs
StatePublished - Jun 2022

Funding

FundersFunder number
Ministry of Education and Science of the Russian Federation075-10-2020-117

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