The spectrum and term system of S VIII

P. Bengtsson, C. Jupen, L. Engström, A. Redfors, M. Westerlind

Forskningsoutput: TidskriftsbidragArtikelPeer review

14 Citeringar (Scopus)


The spectrum of seven times ionized sulfur, S VIII, has been observed in the wavelength range 50-1200 Å. Both beam-foil and laser-producedplasma light sources have been used. 71 new lines representing the transitions 2p5-2p43d, 2p43s-3p, 3p-3d, 3d-4f, 4f-5g and 5g-6h have been identified and 100 energy levels, of which 46 are new, are now accuratelyestablished. The spectral analysis is supported by isoelectronic comparisonsalong the F I-sequence and by parametric least-squares fits of Slater integrals to the observed levels. The ionization potential in S VIII is determined to 2651899 ± 60 cm-1and estimated ionization energies arederived for the isoelectronic elements between FI and Ar X.

Sidor (från-till)413-424
Antal sidor12
TidskriftPhysica Scripta
StatusPublicerad - 1993-okt.-01
Externt publiceradJa

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  • Atom- och molekylfysik och optik (10302)


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