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arXiv · 2105.11435

Electron affinity of oganesson

M. Y. Kaygorodov·L. V. Skripnikov·I. I. Tupitsyn·E. Eliav·Y. S. Kozhedub·A. V. Malyshev·A. V. Oleynichenko·V. M. Shabaev·A. V. Titov·A. V. Zaitsevskii
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Abstract

The electron affinity (EA) of superheavy element Og is calculated by the use of the relativistic Fock-space coupled cluster (FSCC) and configuration interaction methods. The FSCC cluster operator expansion included single, double, and triple excitations treated in a non-perturbative manner. The Gaunt and retardation electron-electron interactions are taken into account. Both methods yield the results that are in agreement with each other. The quantum electrodynamics correction to EA is evaluated using the model Lamb-shift operator approach. The electron affinity of Og is obtained to be 0.076(4) eV.

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M. Y. Kaygorodov, L. V. Skripnikov, I. I. Tupitsyn, E. Eliav, Y. S. Kozhedub, A. V. Malyshev, A. V. Oleynichenko, V. M. Shabaev, A. V. Titov, A. V. Zaitsevskii. 2021-05-24. Electron affinity of oganesson. https://doi.org/10.1103/physreva.104.012819

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