Transition Energies of Lutetium

Abstract

Transition energies of neutral lutetium (Lu I, Z = 71) belonging to the lanthanide series, including the ionization potential, excitation energies, and electron affinity, are calculated by the multiconfiguration Hartree-Fock method within the framework of the Breit-Pauli Hamiltonian and the relativistic Hartree-Fock method. We also report on the ionization potential and excitation energies of Lu II and Lu III. The results obtained have been compared with other works.