Nuclear electromagnetic moments. β-NMR and its applications Original Research Article

Studies of magnetic moments and electric quadrupole moments for light unstable nuclei, which have been opened up by the recent development of spin-polarized radioactive nuclear beams and the β-ray detected nuclear magnetic resonance technique, are reviewed. The results lead to several intriguing findings concerning structures and interactions in unstable nuclei far from the stability line, such as a proton-halo structure in proton-rich nuclei, displacement of the single particle levels and quenching of the neutron effective charge in neutron-rich nuclei, and an anomalously large spin expectation value in a T=3/2 mirror pair. Applications of the present techniques to the study of hyperfine interactions of radioactive atoms introduced in solids are also discussed.