Abstract
A single trapped Ra + (Z = 88) ion provides a very promising route towards a most precise measurement of Atomic Parity Violation (APV), since APV effects grow faster than Z 3. This experiment promises the best determination of the electroweak coupling constant at the lowest accessible energies. Such a measurement provides a sensitive test of the Standard Model in particle physics. At the present stage of the experiment, we focus on trapping and laser cooling stable Ba + ions as a precursor for radioactive Ra + . Online laser spectroscopy of the isotopes 209 − 214Ra + in a linear Paul trap has provided information on transition wavelengths, fine and hyperfine structures and excited state lifetimes as test of atomic structure calculations. Additionaly, a single trapped Ra + ion could function as a very stable clock.
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The 5th International Symposium on Symmetries in Subatomic Physics (SSP 2012), Groningen, The Netherlands, 18–22 June 2012.
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Nuñez Portela, M., van den Berg, J.E., Bekker, H. et al. Towards a precise measurement of atomic parity violation in a single Ra+ ion. Hyperfine Interact 214, 157–162 (2013). https://doi.org/10.1007/s10751-013-0774-0
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DOI: https://doi.org/10.1007/s10751-013-0774-0