Ionization potential and electron affinity of superheavy element 119: Relativistic high-order coupled-cluster study with QED corrections
Phys. Rev. A 112, 052805 – Published 4 November, 2025
DOI: https://doi.org/10.1103/jpj3-l4c3
Abstract
We report a highly accurate ab initio study of the ionization potential (IP) and electron affinity (EA) of element 119. Electronic correlation effects are treated within the relativistic coupled-cluster theory including excitations up to quadruples. The Gaunt electron-electron interaction and 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) 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.
