| Nuclear alternating parity bands and transition rates in a model of coherent quadrupole–octupole motion in neutron-rich barium isotopes |
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| 摘 要： | Deformed even–even nuclei Barium isotopes with quadrupole–octupole deformations are investigated on the basis of a collective model.The model describes energy levels of the yrast band with alternating parity in the neutron-rich~(140;142;144;146;148)Ba.The structure of the alternating parity bands is examined by odd–even (△I=1) staggering diagrams.An analytical method of the collective model is proposed for the calculation of E2 transition probabilities in alternating spectra of the nuclei~(140;142;144;146)Ba.
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| 关 键 词： | Collective Hamiltonian Quadrupole-octupole deformations Staggering effect Electric transition probability |
Nuclear alternating parity bands and transition rates in a model of coherent quadrupole-octupole motion in neutron-rich barium isotopes |
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| Affiliation: | School of Physical Science and Technology, Southwest University, Chongqing 400715, China |
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| Abstract: | Deformed even–even nuclei Barium isotopes with quadrupole–octupole deformations are investigated on the basis of a collective model. The model describes energy levels of the yrast band with alternating parity in the neu-tron-rich 140;142;144;146;148Ba. The structure of the alternating parity bands is examined by odd–even (ΔI=1) staggering diagrams. An analytical method of the collective model is proposed for the calculation of E2 transition probabilities in alternating spectra of the nuclei 140;142;144;146Ba. |
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| Keywords: | Collective Hamiltonian Quadrupole-octupole deformations Staggering effect Electric transition probability |
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