The Formula transition array of Fe XIX and isoelectronic ions

Slater radial-integral parameters for the $${2s}^{2}\,{2p}^{3}\,3d $$ configuration are adjusted by least-squares optimization so that they become consistent with observed spectra of $${2s}^{2}\,{2p}^{4}\,-\,{2s}^{2}\,{2p}^{3}\,3d $$ transitions, in the Fe XIX isoelectronic sequence. From the adjusted parameters, energy levels and oscillator strengths are computed for this transition array for elements from SIX through to Fe XIX. New spectral lines are identified including some Fe XIX lines observed in the spectra of laser-produced plasmas and in solar spectra.