Addition to the analysis of the Sr VI and Sr VII spectra

Abstract Fifty-six lines of multicharged strontium are measured with an improved wavelength accuracy, or interpreted for the first time. They are 4p4s, 4p5s and 4p4d transitions in Sr VII and 4p5s transitions in SrVI. The revision of the singlet-triplet connection in SrVII is supported by theoretical survey of the ground configuration in Ge-like ions.