Electronic Structure of Lr+ (Z = 103) from Ab Initio Calculations

The four-component relativistic Dirac–Coulomb Hamiltonian and the multireference configuration interaction (MRCI) model were used to provide reliable energy levels spectroscopic properties of Lr+ ion Lu+ homolog. spectrum is very similar that homolog, with multiplet manifold 7s2, 6d17s1 7s17p1 configurations as ground low-lying excited states. results are discussed in light earlier findings utilizing different theoretical models. Overall, MRCI can reliably predict bring new insight into experiments superheavy ions.