Nuclear Spins of Neutron-deficient Terbium Isotopes

Abstract
The atomic-beam magnetic-resonance method has been used to measure the nuclear spins of some neutron-deficient terbium isotopes with the following results: 151Tb (18 h) I=1/2, 152Tb (18 h) I=2, 153Tb (2.4 d) I=5/2, 154Tb (9 h) I=3, 154Tb (21 h) I=0, 155Tb (5.6 d) I=3/2, 156Tb (5.4 d) I=3. The spin values are compared with spectroscopic results and discussed in terms of the unified nuclear model.