中国物理B ›› 2001, Vol. 10 ›› Issue (3): 194-201.doi: 10.1088/1009-1963/10/3/305

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LOW-LYING SPECTRA AND E2 TRANSITION RATES IN EVEN--EVEN Pd ISOTOPES IN THE INTERACTING BOSON MODEL

刘凤英1, 朴在渊2, 张进富3   

  1. (1)Department of Physics and the Key Laboratory for Quantum Information and Measurements, Ministry of Education Tsinghua University, Beijing 100084, China; (2)Department of Physics and the Key Laboratory for Quantum Information and Measurements, Ministry of Education Tsinghua University, Beijing 100084, China; Department of Nuclear Power, KimLiSong University, PyongYang, DPR Korea; (3)Department of Physics and the Key Laboratory for Quantum Information and Measurements, Ministry of Education Tsinghua University, Beijing 100084, China; Department of Physics, Chifeng Teacher's College for Nationalities, Chifeng 024001, China
  • 收稿日期:2000-01-18 修回日期:2000-09-03 出版日期:2001-03-15 发布日期:2005-06-12
  • 基金资助:
    Project supported in part by the National Natural Science Foundation of China, (Grant No. 19775026), Foundation for Outstanding Young University Teachers, Ministry of Education of China, and by the Fok Ying Tong Education Foundation.

LOW-LYING SPECTRA AND E2 TRANSITION RATES IN EVEN--EVEN Pd ISOTOPES IN THE INTERACTING BOSON MODEL

Liu Feng-ying (刘凤英)a, Zhang Jin-fu (张进富)ab, Pak Jae-you (朴在渊)ac    

  1. a Department of Physics and the Key Laboratory for Quantum Information and Measurements, Ministry of Education Tsinghua University, Beijing 100084, China; b Department of Physics, Chifeng Teacher's College for Nationalities, Chifeng 024001, China; c Department of Nuclear Power, KimLiSong University, PyongYang, DPR Korea
  • Received:2000-01-18 Revised:2000-09-03 Online:2001-03-15 Published:2005-06-12
  • Supported by:
    Project supported in part by the National Natural Science Foundation of China, (Grant No. 19775026), Foundation for Outstanding Young University Teachers, Ministry of Education of China, and by the Fok Ying Tong Education Foundation.

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摘要： The positive parity collective states in the even-even 100Pd-116Pd isotopes are studied in the framework of the interacting boson model. A schematic Hamiltonian capable of describing their spectra and transition is used. It is found that the spectra can be well described by a U(5) plus SU(3) perturbation interaction. As the valence neutron number changes, the structure of the isotopes shows regular patterns of change. In the meantime, the behaviour of 0+2 can also be partially described by the model.

Abstract: The positive parity collective states in the even-even 100Pd-116Pd isotopes are studied in the framework of the interacting boson model. A schematic Hamiltonian capable of describing their spectra and transition is used. It is found that the spectra can be well described by a U(5) plus SU(3) perturbation interaction. As the valence neutron number changes, the structure of the isotopes shows regular patterns of change. In the meantime, the behaviour of 0+2 can also be partially described by the model.

Key words: Spectra, electromagnetic transition, positive parity low-lying collective state, staggering phenomenon

中图分类号:  (90 ≤ A ≤ 149)

  • 27.60.+j
21.60.Ev (Collective models) 21.60.Fw (Models based on group theory) 23.20.Lv (γ-transitions and level energies) 21.10.Hw (Spin, parity, and isobaric spin) 21.10.Re (Collective levels) 21.10.Ma (Level density)