Intrinsic properties of high-spin band structures in triaxial nuclei

Abstract

The band structures of ${}^{68,70}$Ge, ${}^{128,130,132,134}$Ce and ${}^{132,134,136,138}$Nd are investigated using the triaxial projected shell model (TPSM) approach. These nuclei depict forking of the ground-state band into several s-bands and in some cases, both the lowest two observed s-bands depict neutron or proton character. It was discussed in our earlier work that this anamoluos behaviour can be explained by considering $\gamma$-bands based on two-quasiparticle configurations. As the parent band and the $\gamma$-band built on it have the same intrinsic structure, g-factors of the two bands are expected to be similar. In the present work, we have undertaken a detailed investigation of g-factors for the excited band structures of the studied nuclei and the available data for a few high-spin states are shown to be in fair agreement with the predicted values.

29 pages, 20 figures. Nucl. Phys. A (2017)

References in corpus (5)

• Triaxial projected shell model study of gamma-vibrational bands in even-even Er isotopes
• Theoretical study of triaxial shapes of neutron-rich Mo and Ru nuclei
• gamma-vibrational states in superheavy nuclei
• Observation of $\gamma$-vibrations and alignments built on non-ground-state configurations in 156Dy
• Observation of a $\gamma$-band based on two-quasiparticle configuration in ${}^{70}$Ge

Cited by in corpus (5)

• Quasiparticle and $\gamma$-band structures in ${}^{156}$Dy
• Microscopic description of structural evolution in Pd, Xe, Ba, Nd, Sm, Gd and Dy isotopes
• Systematic study of near yrast band structures in odd-mass ${}^{125-137}$Pr and ${}^{127-139}$Pm isotopes
• Microscopic aspects of $\gamma$-softness in atomic nuclei
• Extended triaxial projected shell model approach for odd-neutron nuclei