Calculation of atomic spectra and transition amplitudes for superheavy element Db (Z=105)

TL;DR

This paper calculates atomic spectra and transition amplitudes for the superheavy element dubnium (Z=105) using a novel CIPT method, providing detailed energy levels, transition data, isotope shifts, and ionization potential.

Contribution

It introduces the application of the CIPT method to superheavy elements, enabling accurate predictions of atomic properties for dubnium and its ions.

Findings

Calculated energy levels for Db and Db II

Determined electric dipole transition amplitudes from the ground state

Estimated isotope shifts and ionization potential for Db

Abstract

Atomic spectra and other properties of superheavy element dubnium (Db, Z=105) are calculated using recently developed method combining configuration interaction with perturbation theory (the CIPT method, Dzuba et al, Phys. Rev. A, {\bf 95}, 012503 (2017)). These include energy levels for low-lying states of Db and Db~II, electric dipole transition amplitudes from the ground state of Db, isotope shift for these transitions and ionisation potential of Db. Similar calculations for Ta, which is lighter analog of Db, are performed to control the accuracy of the calculations.