Analysis of 4d^9-4d^8 5p transitions in Sb vii and Te viii and the ionization limits of Sb vi and Te vii

Abstract

The spectra of antimony and tellurium have been photographed in the region 625–100 Å on 6.60 and 10.7 m spectrographs. The sources used were a sliding spark and a triggered spark. On the basis of these measurements the earlier analyses of these spectra hve been revised and extended. Parametric least-squares-fit calculations and Hartree-Fock calculations were carried out for the 4d9 and 4d8 5p configurations. Comparison of these parameter values has been made for the spectra Ag iii to Te viii. The spectra of Sb vi and Te vii below 300 Å were extended and the ionization limits for Sb vi and Te vii have been found to be 795 340(8000) cm−1 or 98.6(1.0) eV and 1 000 900(10 000) cm−1 or 124.0(1.2) eV, respectively.