Measurement of the Ra+ 7p 2P3/2 state lifetime

M. Fan, C. A. Holliman, A. Contractor, C. Zhang, S. F. Gebretsadkan, A. M. Jayich
PRA 105, 042801 (2022)

We report the first measurement of the radium ion’s 7p 2P3/2 state lifetime, τ=4.78(3) ns. The measured lifetime is in good agreement with theoretical calculations, and will enable a determination of the differential scalar polarizability of the narrow linewidth 7s 2S1/2 → 6d 2D5/2 optical clock transition.