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

  title={Calculation of atomic spectra and transition amplitudes for the superheavy element Db (
  author={Bryce G. C. Lackenby and V. A. Dzuba and Victor V. Flambaum},
  journal={Physical Review A},
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… 

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