Nuclear moments and charge radii of the ¹⁷¹Hf ground state and isomer

The magnetic moment, quadrupole moment and mean-square charge radial changes, relative to ¹⁷²Hf, have been measured for the ¹⁷¹Hf ground state and the ½^-[521] isomeric state, using on-line laser spectroscopy. The magnetic moments of the isomer and ground states are found to be + 0.526(16)µ_n and -0.674(12)µ_n, respectively. The spectroscopic quadrupole moment of the ground state is found to be +3.463(27) b. No change in mean-square charge radius is observed between the ground state and isomeric state. The observation of an inversion in the odd-even staggering at ¹⁷¹Hf is consistent with the suggested deformation trends.