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Published September 1996 | Published
Journal Article Open

Improved wavelengths and energy levels of doubly-ionized argon (Ar III)

Abstract

New measurements of Ar III wavelengths between 508 Å and 4183 Å are combined with measurements from the literature to find improved values for the energy of most of the known levels in Ar III. Parameters derived from fitting the new level energies to an LS-coupling model are presented along with eigenvector compositions of the levels. On the basis of this analysis new designations are recommended for several levels.

Additional Information

Accepted: January 22, 1996. We are indebted to Scott Bergeson at the University of Wisconsin and the FTS Laboratory at the University of Lund for kindly providing several spectra used in this work. We wish to thank Jack Sugar for assisting with the calculations using the Cowan set of programs.

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August 22, 2023
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