Calculated wavelengths, oscillator strengths, and energy levels for allowed 3-3 transitions for ions in the Si-like isoelectronic sequence between Si I and Ni XV

Abstract

These tables contain calculated wavelengths and oscillator strengths as well as measured wave-lengths for 3 s 23 p 2-3 s3 p 3 and 3 s 23 p 2-3 s 23 p3 d transitions, and energy levels and level compositions for the 3 s3 p 3 and 3 s 23 p3 d configurations, of ions in the Si I isoelectronic sequence between Si I and Ni XV. The computational method is the same as that recently applied to analogous transition arrays in S-like and P-like ions, which involved the optimization of Slater parameters previously calculated ab initio with a Hartree-Fock-Relativistic (HFR) program package which includes configuration interaction. This package employs the Blume-Watson method for spin-orbit interactions. A Multiconfiguration-Dirac-Fock program is applied to check the accuracy of ab Initio HFR calculations for Fe XIII. Statistics are also tabulated to demonstrate how optimization procedures and the inclusion of strongly interacting configurations affect the values of the oscillator strengths.