Calculation of the spectrum of the superheavy element Z=120

TL;DR

This paper presents high-precision relativistic calculations of the energy spectrum of the superheavy element Z=120, using advanced quantum chemistry methods to improve accuracy and compare with lighter homologs.

Contribution

It introduces a combined relativistic Hartree-Fock and configuration interaction approach for superheavy elements, validated against barium and radium data.

Findings

Accurate energy levels for Z=120 obtained

Method validated with lighter elements

Enhanced understanding of superheavy element spectra

Abstract

High-precision calculations of the energy levels of the superheavy element Z=120 are presented. The relativistic Hartree-Fock and configuration interaction techniques are employed. The correlations between core and valence electrons are treated by means of the correlation potential method and many-body perturbation theory. Similar calculations for barium and radium are used to gauge the accuracy of the calculations and to improve the ab initio results.