Hyperfine structure of the7pstate in Fr

By the use of relativistic many-body theory, the hyperfine structure of the $7p$ state of ${}_{}{}^{211}{}_{}{}^{}\mathrm{Fr}$ was calculated. By including polarization effects in all orders, good agreement for the magnetic dipole constant was obtained. In the same way, a new value of the electric quadrupole moment is obtained: $Q=-240\mathrm{}$ mb for ${}_{}{}^{211}{}_{}{}^{}\mathrm{Fr}\left({}_{}{}^2{}_{}{}^{}P_{\frac{3}{2}}^{}{}_{}{}^{}\right)$.