Abstract
We demonstrate resonant fluorescence laser spectroscopy in highly charged ions (HCI) stored in an electron beam ion trap by investigating the dipole-forbidden transition in boronlike ions. Forced evaporative cooling yielded a high resolving power, resulting in an accurate wavelength determination to . By applying stronger cooling and two-photon excitation, new optical frequency standards based upon ultrastable transitions in such HCI could be realized in the future, e.g., for the search of time variations of the fine-structure constant.
- Received 16 July 2011
- Corrected 8 February 2012
DOI:https://doi.org/10.1103/PhysRevLett.107.143002
© 2011 American Physical Society
Corrections
8 February 2012