Empirical Investigation of Extreme Single-Particle Behavior of Nuclear Quadrupole Moments in Highly Collective A ～ 150 Superdeformed Bands

摘要

The intrinsic quadrupole moment Q_0 of superdeformed rotational bands in A ～ 150 nuclei depends on the associated single-particle configuration. We have derived an empirical formula based on the additivity of effective quadrupole moments of single-particle orbitals that describes existing measurements from ~(142)Sm to ~(152)Dy. To further test the formula, the predicted Q_0 moments for two superdeformed bands in ~(146)Gd of 14.05 eb were confronted with a new measurement yielding 13.9 ± 0.4 and 13.9 ± 0.3 eb respectively. This excellent agreement provides empirical evidence of extreme single-particle behavior in highly deformed, collective systems.