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2024年10月30日

The Exploring of New Collective States ——Mixed-Symmetry States in Nuclei

  • New collective states with mixed-symmetry character of neutron—proton degrees of freedom is reviewed.In the framework of IBM-2,the mixed-symmtry states have been discussed in detail.The full-symmetry states and mixed-symmetry states of Hg,Gd and Nd isotopes,especially the effect of Majorana parameters on these states and M1 transitions,are calculated and analyzed.The results show that the basic properties of mixed-symmetry states of these nuclei are well described by IBM-2.
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  • [1] D.Bohle et al., Phys. Lett., B137(1984), 27[2] U.Hartmann, D. Bohle et al,Nucl. Phys,A465(1987), 25. [3]U.E. P. Berg, U. Kneissl, Ann. Rev. Nucl. Part. Sci., 37(1987),33H.H. Pitz et al., Nucl. Phys., A492(1989), 411.[4] C.Djalali et al., Phys. Lett., B164(1985), 269.[5] A. Lichter, International Conference on Contemporary Topics in Nuclea Structure Physics,p.127,edited by R. F. Casten et al., (1988).[6] P. O, Lipas et al., Phys. Lett., 230(1989), 1.[7] F, Iachello Nucl. Phys., A358(1981), 89; Phys, Rev. Lett., 53(1984), 1427.[8] K. Heyde, Nucl. Struc., React. and Symmet, V1, p. 288, edited by Richard Adlin Meyer and V.Parr(June,一14th 1986).[9] T. Otsuka, N. Yoshida, Program NPBOS Report JEARI-M85-094[10] 顾金南等,高能物理与核物理,6(1982),205. Chinese Physics, 3 (1983),337,[11] S. T. Ahmad et al., J. Phys. G. Nucl. Phys. Part., 15(1989), 93.[12] A. F. BarfieId et al., Z. Phys,, A311(1983), 205.[13] 文万信,应用IBM-2对混合对称态的探讨(1990年硕士论文).[14] T. Otsuka et al., Nucl. Phys., A309(1980), 1.[15] O. Scholten et al., Phys. Rev. Lett., 55(1985), 1866.[16] R. A. Mayer et al., Phys. Rev., C41(1990), 2386.[17] B. Kasten et al., Phys. Rev. Lett., 63(1989), 609.[18] H. Tagziria et aL, J. Phys. G: Nuclear and Particle Physics, 16(1990), 1323[19]W. Greiner, Nucl. Phys., 80(1966), 417;A. Faessler, Nucl. Phys., 85(1966), 653[20] N. Lo Iudice et al., Phys. Rev. Lett., 41(1987), 1532.[21] I. Hamamoto and C. Ronstrom, Phys. Lett., B194(1987), 1.[22] P, Von Isacker et al., Ann. Phys. (N. Y),171(1986), 253.[23] E. Lipparini, S. Sringari, Phys. Lett,B130(1983), 139.[24] A. Faessler et al., J. Phys., G12(1986), 147.[25] D. Bes, R. A. Broblia, Phys, Lett., B137(1984), 141.[26] I. Hamamoto, S. Aberg, Phys. Lett., B145(1984), 163.
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GU Jin-Nan, WEN Wan-Xin and ZHAO Yu-Min. The Exploring of New Collective States ——Mixed-Symmetry States in Nuclei[J]. Chinese Physics C, 1992, 16(6): 563-570.
GU Jin-Nan, WEN Wan-Xin and ZHAO Yu-Min. The Exploring of New Collective States ——Mixed-Symmetry States in Nuclei[J]. Chinese Physics C, 1992, 16(6): 563-570. shu
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Received: 1900-01-01
Revised: 1900-01-01
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The Exploring of New Collective States ——Mixed-Symmetry States in Nuclei

    Corresponding author: GU Jin-Nan,
  • Institute of Modern Physics,Academia Sinica,Lanzhou 730000

Abstract: New collective states with mixed-symmetry character of neutron—proton degrees of freedom is reviewed.In the framework of IBM-2,the mixed-symmtry states have been discussed in detail.The full-symmetry states and mixed-symmetry states of Hg,Gd and Nd isotopes,especially the effect of Majorana parameters on these states and M1 transitions,are calculated and analyzed.The results show that the basic properties of mixed-symmetry states of these nuclei are well described by IBM-2.

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