Relativistic MCDF oscillator strengths for 6s2 1S0-6s6p 1P1, 3P1 transitions in lanthanide ions

The multiconfiguration Dirac-Fock calculation of the transition energies and oscillator strengths for the 6s(2 1)S(0)-6s6p(1)p(1),P-3(1), transitions in rare earth ionized systems (from La+1 through Nd+4) were carried out. At least part of electron correlation was taken into account. The intravalence correlation was represented through limited relativistic configuration mixing while the valence-core correlation was approximated by a core polarization model. For the allowed transition, we compared our results with other theoretical data, whereas for the forbidden transition only our results are available.