33 citations · 73 across the 3 of their papers we have counts for
6 papers
Radium Ion Optical Clock
C. A. Holliman, M. Fan, A. Contractor +2
We report the first operation of a Ra optical clock, a promising high-performance clock candidate. The clock uses a single trapped Ra ion and operates on the $7…
Direct measurement of the transition frequency in Ra
C. A. Holliman, M. Fan, A. Contractor +2
We report a direct measurement of the electric dipole transition frequency in Ra. With a single laser-cooled radium ion we…
Optical Mass Spectrometry of Cold and
M. Fan, C. A. Holliman, X. Shi +5
We present an all-optical mass spectrometry technique to identify trapped ions. The new method uses laser-cooled ions to determine the mass of a cotrapped dark ion with a sub-dalto…
Measurements of electric quadrupole transition frequencies in Ra
C. A. Holliman, M. Fan, A. M. Jayich
We report the first driving of the and electric quadrupole (E2) transitions in Ra. We measur…
Measurement of the state branching fractions in
M. Fan, C. A. Holliman, S. G. Porsev +2
We report a measurement of the radium ion's state branching fractions and improved theoretical calculations. With a single laser-cooled i…
Laser Cooling of Radium Ions
M. Fan, C. A. Holliman, A. L. Wang +1
The unstable radium nucleus is appealing for probing new physics due to its high mass, octupole deformation and energy level structure. Ion traps, with long hold times and low part…