Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2009-04-14
Physics
Nuclear Physics
Nuclear Theory
15 pages, 9 figures, accepted by Nucl. Phys. A
Scientific paper
The newly developed multi-quasiparticle triaxial projected shell-model approach is employed to study the high-spin band structures in neutron-deficient even-even Ce- and Nd-isotopes. It is observed that gamma-bands are built on each intrinsic configuration of the triaxial mean-field deformation. Due to the fact that a triaxial configuration is a superposition of several K-states, the projection from these states results in several low-lying bands originating from the same intrinsic configuration. This generalizes the well-known concept of the surface gamma-oscillation in deformed nuclei based on the ground-state to gamma-bands built on multi-quasiparticle configurations. This new feature provides an alternative explanation on the observation of two I=10 aligning states in 134Ce and both exhibiting a neutron character.
Bhat G. H.
Naik Z.
Palit R.
Sheikh Javid A.
Sun Yadong
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