Non-yrast spectra of odd-A nuclei in a model of coherent quadrupole-octupole motion

Abstract

The model of coherent quadrupole and octupole motion (CQOM) is applied to describe non-yrast split parity-doublet spectra in odd-mass nuclei. The yrast levels are described as low-energy rotation-vibration modes coupled to the ground single-particle (s.p.) state, while the non-yrast parity-doublet structures are obtained as higher-energy rotation-vibration modes coupled to excited s.p. states. It is shown that the extended model scheme describes both the yrast and non-yrast quasi parity-doublet spectra and the related B(E1) and B(E2) transition rates in different regions of heavy odd-A nuclei. The involvement of the reflection-asymmetric deformed shell model to describe the single-particle motion and the Coriolis interaction on a deeper level is discussed.

8 pages, 3 figures

References in corpus (3)

• Nuclear collective motion with a coherent coupling interaction between quadrupole and octupole modes
• Non-yrast nuclear spectra in a model of coherent quadrupole-octupole motion
• Description of nuclear octupole and quadrupole deformation close to the axial symmetry: Critical-point behavior of 224Ra and 224Th

Cited by in corpus (4)

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• Theoretical predictions for the magnetic dipole moment of ${}^{229m}$Th
• ${}^{229m}$Th isomer from a nuclear model perspective
• Analytical description of the excited state phase transition to octupole deformed shape in alternating parity bands