4p -inner-shell and double-excitation spectrum of Sr II

C. Banahan, J. T. Costello, D. Kilbane, P. Van Kampen

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1 Citation (Scopus)


We report photoabsorption measurements from the 4p inner shell of singly ionized strontium in the spectral region between 26.0 and 37.4 eV. More than 60 levels of Sr II are reported which are interpreted as singly excited inner-shell transitions 4 p6 5s S 1/2 2 →4 p4 5s (P1, P3) ns, md and doubly excited transitions 4 p6 5s S 1/2 2 →4 p5 4d (P1, P3, D3) nl. Multiconfiguration Hartree-Fock calculations are performed in jj coupling and the levels are arranged into Rydberg series converging on seven limits, allowing the identification of two levels in Sr III.

Original languageEnglish
Article number022509
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number2
Publication statusPublished - 12 Feb 2009
Externally publishedYes


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