2s22p5−2s2p6 transitions in the fluorinelike ions Sr29+ and Y30+

Abstract

The $2s^{2}2p^5-2s2p^6$ transitions in ${\mathrm{Sr}}^{29+}$ and ${\mathrm{Y}}^{30+}$ have been observed by means of a laser-produced plasma and a 2.2-m grazing-incidence spectrograph. Comparison of the observed $2s^{2}2p^5{}_{}{}^2{}_{}{}^{}P_{\frac{3}{2}-\frac{1}{2}}^{}{}_{}{}^{}$ fine-structure intervals with values calculated by the Dirac-Fock method allows accurate wavelengths to be predicted for the $2s^{2}2p^5{}_{}{}^2{}_{}{}^{}P_{\frac{3}{2}}^{}{}_{}{}^{}-{}_{}{}^2{}_{}{}^{}P_{\frac{1}{2}}^{}{}_{}{}^{}$ magnetic-dipole transitions in the isoelectronic series of ions ${\mathrm{Kr}}^{27+}$ ${-\mathrm{M}\mathrm{o}}^{33+}$.