Nuclear-structure effects in atomic parity nonconservation

It has been suggested to measure ratios of atomic parity-nonconservation observables in strings of isotopes to cancel atomic-structure effects. Nuclear-structure-effects nevertheless play a significant role in extracting weak-interaction parameters. Uncertainties in nuclear structure, especially in the neutron distribution, severely limit the precision of extracting the weak-interaction parameters. On the other hand, the sensitivity to the neutron distribution could provide a unique method for accurately determining rms radii of neutron distributions.