Isoelectronic comparison of the Al-like 3s²3p²P–3s3p²⁴P transitions in the ions P III-Mo XXX

Abstract

New observations of the 3s23p 2P–3s3p2 4P intercombination transitions in Al-like ions have been made for Cl V from spark spectra recorded at Lund and for Kr XXIV and Mo XXX from spectra obtained at the JET tokamak. The new results have been combined with other identifications of these transitions along the sequence and empirically systematized and compared with theoretical calculations. A set of smoothed and interpolated values for the excitation energies of the 3s3p2 4P levels in P III-Mo XXX is presented.