487 research outputs found
Breit Interaction and Parity Non-conservation in Many-Electron Atoms
We present accurate {\em ab initio} non-perturbative calculations of the
Breit correction to the parity non-conserving (PNC) amplitudes of the
and transitions in Cs, and transitions in
Fr, transition in Ba, transition in Ra, and
transition in Tl. The results for the transition
in Cs and transition in Fr are in good agreement with other
calculations while calculations for other atoms/transitions are presented for
the first time. We demonstrate that higher-orders many-body corrections to the
Breit interaction are especially important for the PNC amplitudes. We
confirm good agreement of the PNC measurements for cesium and thallium with the
standard model .Comment: 9 pages, 1 figur
Atomic Properties of Lu
Singly ionised Lutetium has recently been suggested as a potential clock
candidate. Here we report a joint experimental and theoretical investigation of
\ce{Lu^+}. Measurements relevant to practical clock operation are made and
compared to atomic structure calculations. Calculations of scalar and tensor
polarizabilities for clock states over a range of wavelengths are also given.
These results will be useful for future work with this clock candidate.Comment: 12 pages, 5 figure
- …