Revised and extended analyses of the Pd-like ion spectra Sb VI, Te VII and I VIII

The 4d95l-4d95l' transitions in the Pd-like ion spectra Sb VI, Te VII and I VIII have been reinvestigated in the 400-900 A wavelength region using vacuum spark sources. In Sb VI and Te VII, the previous analyses of the 4d95s-4d95p and 4d95p-4d95d transitions have been extended by respectively six and twenty-six newly classified lines. An additional forty-four and forty-nine lines have been identified as 4d95d-4d95f transitions leading to the determination of the 4d95f levels in Sb VI and Te VII. For I VIII, the previously identified 4d95s-4d95p transitions have been remeasured and seven new lines were added. The 4d95s and 4d95p level energies have been revised. An additional forty-seven lines have been identified as 4d95p-4d95d transitions leading to the determination of the 4d95d levels. Resonance lines have been remeasured for Te VII and I VIII in the grazing incidence region. The 4d95d 1S0 levels, of crucial interest in the development of X-UV lasers, have been established for the first time in all three spectra studied. (orig.)