2000 character limit reached
Direct measurement of the $7s\ ^2S_{1/2}\rightarrow$ $7p\ ^2P_{3/2}$ transition frequency in $^{226}$Ra$^{+}$ (2008.13231v2)
Published 30 Aug 2020 in physics.atom-ph
Abstract: We report a direct measurement of the $7s\ 2S_{1/2}\rightarrow$ $7p\ 2P_{3/2}$ electric dipole transition frequency in ${226}$Ra${+}$. With a single laser-cooled radium ion we determine the transition frequency to be 785722.11(3) GHz by directly driving the transition with frequency-doubled light and measuring the frequency of the undoubled light with an iodine reference. This measurement addresses a discrepancy of five combined standard deviations between previously reported values.