Abstract
The spectra of various ions of xenon were investigated in the 70–170 Å region. The earlier analysis of the 4d9–4d85p transitions Kaufman et al., J. Opt. Soc. Am. B 73, 691 (1983) in Rh-like Xe X was confirmed except for the two highest 4d8(1S)5p 2P levels. The 4p64d9–(4p64d85p84f +4p54d10) transitions arrays were studied. We have established 28 new levels belonging to the odd parity system and classified 40 additional lines in Xe X. The spectrum is adequately described by the Hartree–Fock and parametric least-squares-fitting calculations. The resonance transitions from the highly excited 4d9(6p+5f+7p+6f) levels in Pd-like Xe IX and the 4105s 2S–4d95s4f 2P transitions in Ag-like Xe VIII have also been identified. The ionization potential of Xe IX has been calculated to be 1450500±1000 cm-1 (179.85±0.10 eV). The results from all three spectra are in good agreement with the Rh I, Pd I and Ag I isoelectronic sequences data.
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