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Electron and Nucleon Localization Functions of Oganesson: Approaching the Thomas-Fermi Limit

2018; American Physical Society; Volume: 120; Issue: 5 Linguagem: Inglês

10.1103/physrevlett.120.053001

1092-0145

Paul Jerabek, B. Schuetrumpf, Peter Schwerdtfeger, W. Nazarewicz,

Rare-earth and actinide compounds

Fermion localization functions are used to discuss electronic and nucleonic shell structure effects in the superheavy element oganesson, the heaviest element discovered to date. Spin-orbit splitting in the 7p electronic shell becomes so large (∼10 eV) that Og is expected to show uniform-gas-like behavior in the valence region with a rather large dipole polarizability compared to the lighter rare gas elements. The nucleon localization in Og is also predicted to undergo a transition to the Thomas-Fermi gas behavior in the valence region. This effect, particularly strong for neutrons, is due to the high density of single-particle orbitals.