4<i>d</i>⁹ → 4<i>d</i>⁸5<i>p</i> transitions in Cd IV, Sn VI, and Sb VII and the resonance lines of Sn V and Sb VI

Abstract

The spectra of cadmium, tin, and antimony have been photographed in the region 600–200 Å on 10.7 and 6.6 m grazing incidence vacuum spectrographs using a triggered spark and a sliding spark as light sources. The analyses of the 4d 8 5p configurations in Cd IV and Sn VI have been revised and extended. The parametric level fitting calculations and relative oscillator strengths calculations of the allowed transitions confirm the present analyses. The separation of the 4d 9 2 D multiplet in Sb VII has been determined; its value is 10 405 ± 2 cm −1 . Accurate measurements of the resonance lines of Sn V and Sb VI have resulted in raising every level of Sn V by +415 cm −1 and of Sb VI by +5 cm −1 .