RELATIVISTIC MEAN-FIELD CALCULATION OF PARITY-VIOLATING OBSERVABLES IN FRANCIUM

A formalism developed previously to study the smaller nuclear spin-dep endent parity-violating effects using the relativistic mean field theo ry has been generalized to the case of odd-odd nuclear systems such as Fr-210. Because of the recent success in trapping Fr atoms, parity-vi olation experiments for Fr seem feasible. The nuclear spin-dependent p arameters eta and eta' are calculated using the anapole moment paramet ers kappa(p) and kappa(n). They are used to calculate the hyperfine tr ansition amplitudes for the 6S-->7S transition in Cs-134 and 7S -->8S in Fr-210. The calculated hyperfine transition amplitudes in Fr are on e order of magnitude larger than those in Cs.