Radiative Constants in the Spectra of Ions of the Erbium Isoelectronic Sequence

摘要

The probabilities of the 4f~(13)6p → 4f~(13)5d electric dipole transitions and the lifetimes of levels of the 4f~(13)6p and 4f~(13)5d configurations are calculated for spectra of ions Yb III, Lu IV, Hf V, and Ta VI of the erbium isoelectronic sequence. The wave functions of the intermediate coupling scheme, necessary for calculating the relative line strengths, are obtained semiempirically from experimentally measured energy intervals between fine-structure levels. To pass to the absolute values, the radial integrals of transitions evaluated with the Hartree-Fock functions, are used.