The 4d95d and 4d96s configurations in Sb VI and the 4d95d configuration in Te VII

Abstract

The spectra of antimony and tellurium have been photographed in the region 550–2100 Å on a 10.7 m normal incidence spectrograph. The source used was a triggered vacuum spark. On the basis of these observations all levels of the 4d95d configuration in Sb VI and Te VII, except the 1S0 level, and the levels of the 4d96s configuration in Sb VI have been established. Parametric level fitting configuration calculations of the levels and intensity calculations of the observed transitions confirm the analyses. Additional 108 lines in Sb VI and 60 lines in Te VII have been classified.