Measurements of Electric Quadrupole Transition Frequencies in Ra^+

C. A. Holliman, M. Fan, A. M. Jayich 2019. arXiv 1910.06351

Abstract

We report the first driving of the 7s 2 S1/2→6d 2 D3/2 and 7s 2 S1/2→6d 2 D5/2 electric quadrupole (E2) transitions in Ra+. We measure the frequencies of both E2 transitions, as well as two other low-lying transitions in 226 Ra+ that are important for controlling the radium ion's motional and internal states: 6d 2 D3/2→7p 2 P0 3/2 and 6d 2 D5/2→7p 2 P0 3/2.