Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2016, Vol. 27 ›› Issue (6): 129 doi: 10.1007/s41365-016-0128-0

• NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH • Previous Articles     Next Articles

Nuclear alternating parity bands and transition rates in a model of coherent quadrupole–octupole motion in neutron-rich barium isotopes

Xing Zhang 1,2 • Yong Peng 1 • Chao-Biao Zhou 1 • Jia-Xing Li 1   

  1. 1 School of Physical Science and Technology, Southwest University, Chongqing 400715, China
    2 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  • Contact: Jia-Xing Li E-mail:lijx@swu.edu.cn
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (Nos. 11075133, U1332126, 10205019).

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Xing Zhang, Yong Peng, Chao-Biao Zhou, Jia-Xing Li. Nuclear alternating parity bands and transition rates in a model of coherent quadrupole–octupole motion in neutron-rich barium isotopes.Nuclear Science and Techniques, 2016, 27(6): 129     doi: 10.1007/s41365-016-0128-0
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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 neutron- rich 140;142;144;146;148Ba. The structure of the alternating parity bands is examined by odd–even ðDI ¼ 1Þ 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.

Key words: Collective Hamiltonian, Quadrupole–octupole deformations, Staggering effect, Electric transition probability