Improved Wavelengths and Energy Levels of Doubly-Ionized Argon (Ar III)

Victor Kaufman; Ward Whaling

doi:10.6028/jres.101.067

Improved Wavelengths and Energy Levels of Doubly-Ionized Argon (Ar III)

J Res Natl Inst Stand Technol. 1996 Sep-Oct;101(5):691-704. doi: 10.6028/jres.101.067.

Authors

Victor Kaufman¹, Ward Whaling²

Affiliations

¹ National Institute of Standards and Technology, Gaithersburg, MD 20899-0001.
² California Institute of Technology, Pasadena, CA 91125.

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.

Keywords: argon; energy levels; parametric fit; spectrum; wavelengths; wavenumbers.