Ionization potential and electron affinity of superheavy element 119: relativistic high-order coupled cluster study with QED corrections
Atomic Physics
2025-09-09 v1 Quantum Physics
Abstract
We report a highly accurate \textit{ab initio} study of the ionization potential (IP) and electron affinity (EA) of element 119. Electronic correlation are treated within the relativistic coupled cluster theory including excitations up to quadruples. The Gaunt electron--electron interaction and quantum electrodynamic (QED) corrections are taken into account. The role of high-order correlation effects is analyzed in detail. Our recommended values for the IP and EA are 4.7839(56) eV and 0.6750(71) eV, respectively. These results tighten previous estimates and provide a reference point for future experiments probing periodic-law trends beyond oganesson.
Keywords
Cite
@article{arxiv.2509.05509,
title = {Ionization potential and electron affinity of superheavy element 119: relativistic high-order coupled cluster study with QED corrections},
author = {A. R. Saetgaraev and L. V. Skripnikov and I. I. Tupitsyn and D. P. Usov and A. V. Oleynichenko and I. M. Savelyev and N. K. Dulaev and V. M. Shabaev},
journal= {arXiv preprint arXiv:2509.05509},
year = {2025}
}