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Chinese Physics C> 1990, Vol. 14> Issue(9) : 855-858 

THE ROLE OF NEUTRON i13/2 CONFIGURATION IN SUPERD EFORMED STATES IN A=120—140 MASS REGION

  •  Center of Theoreitcal Physics,CCASTWorld LabInstitute of Modern Physics,Academia Sinica,Lanzhou

  • Many superdeformed bands have been observed in A=120—140 mass region.The occupation of vi13/2 orbit is generally considered as the important cause.vi13/2 band head energy and deformation of odd N nuclei for Z=56—64 and N=69—77 has been calculated systematically with our modified Nilsson κ,μ parameters in this mass region.Results show that on the one hand,the occupation of vi13/2 orbit does favor the superdeformation tendency of nuclei; and on the other hand,the possible candidates of low lying vi13/2 configuration for experimental observation.

  • References

    [1] A. Bohr and B. Mottelson, "Nuclear Structure", VoI.II, Ch.6, Benjamin, New York, I975.[2] S. G. Nilsson et al., Nucl. Phys A131(1969), 1.[3] R. Bentsson et al.. Phys. Lett., 57B(1975), 301.K. Neergard and V. V. Pashkevich, Phys. Lett., 59B(1975), 218.[4] P.J. Twin et al., Phys. Rev. Lett., 55(1985), 1380;R.M. Nyako et al., Phys. Rev, Lett., 52(1984), 507.P.J. Twin et al., Phys. Rev. Lett., 57(1986), 811.[5] B.Hass et al., Phys. Rev. Lett., 60(1988), 503; M. A. Deleplanque et al., Phys. Rev. Lett., 60(1988), 1626.[6] J.Nolan et al., J. Phys., Gll(1985), L17;J. Kirwan et al., Phys. Rev, Lett., 58(1987), 467;J. Nolan et al., "Workshop on Nuclear structure", Slide report, NBI. Copenhagen, Denmark May 16-20,1988.Y. X. Luo(罗亦孝)et al，Z. Phys., A329(1988), 125;高能物理与核物理，13(1989)，632.[7] T. Bengcsson, 1. Ragnarsson and S. 'Aberg, Phys. Lett., B208(1988), 39.[8] J. K. Johansson et al., "Multiple Superdeformed Bands in 153Dy", to be published.[9] E. S. Paul, R. Ma, C. W. Beausang, D. B. Fossan, W: F: Piel, Jr. S. Shi,N. Xu and J. Y. Zhang(张敬业)，Phys. Rev. Lett., 61(1988), 42.[10] J. Y. Zhang(张敬业)N. Xu, D. B. Fossan, Y: Liang, R, Ma, and E.S. Paul, Phys. Rev., C39(1989),714.

  • References

    [1] A. Bohr and B. Mottelson, "Nuclear Structure", VoI.II, Ch.6, Benjamin, New York, I975.[2] S. G. Nilsson et al., Nucl. Phys A131(1969), 1.[3] R. Bentsson et al.. Phys. Lett., 57B(1975), 301.K. Neergard and V. V. Pashkevich, Phys. Lett., 59B(1975), 218.[4] P.J. Twin et al., Phys. Rev. Lett., 55(1985), 1380;R.M. Nyako et al., Phys. Rev, Lett., 52(1984), 507.P.J. Twin et al., Phys. Rev. Lett., 57(1986), 811.[5] B.Hass et al., Phys. Rev. Lett., 60(1988), 503; M. A. Deleplanque et al., Phys. Rev. Lett., 60(1988), 1626.[6] J.Nolan et al., J. Phys., Gll(1985), L17;J. Kirwan et al., Phys. Rev, Lett., 58(1987), 467;J. Nolan et al., "Workshop on Nuclear structure", Slide report, NBI. Copenhagen, Denmark May 16-20,1988.Y. X. Luo(罗亦孝)et al，Z. Phys., A329(1988), 125;高能物理与核物理，13(1989)，632.[7] T. Bengcsson, 1. Ragnarsson and S. 'Aberg, Phys. Lett., B208(1988), 39.[8] J. K. Johansson et al., "Multiple Superdeformed Bands in 153Dy", to be published.[9] E. S. Paul, R. Ma, C. W. Beausang, D. B. Fossan, W: F: Piel, Jr. S. Shi,N. Xu and J. Y. Zhang(张敬业)，Phys. Rev. Lett., 61(1988), 42.[10] J. Y. Zhang(张敬业)N. Xu, D. B. Fossan, Y: Liang, R, Ma, and E.S. Paul, Phys. Rev., C39(1989),714.

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ZHANG Jing-Ye. THE ROLE OF NEUTRON i13/2 CONFIGURATION IN SUPERD EFORMED STATES IN A=120—140 MASS REGION[J]. Chinese Physics C, 1990, 14(9): 855-858.
ZHANG Jing-Ye. THE ROLE OF NEUTRON i13/2 CONFIGURATION IN SUPERD EFORMED STATES IN A=120—140 MASS REGION[J]. Chinese Physics C, 1990, 14(9): 855-858. shu
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Received: 1900-01-01
Revised: 1900-01-01
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THE ROLE OF NEUTRON i13/2 CONFIGURATION IN SUPERD EFORMED STATES IN A=120—140 MASS REGION

    Corresponding author: ZHANG Jing-Ye,
  • Center of Theoreitcal Physics,CCASTWorld LabInstitute of Modern Physics,Academia Sinica,Lanzhou
  • Received Date: 1900-01-01
  • Accepted Date: 1900-01-01
  • Available Online: 1990-09-05

Abstract: Many superdeformed bands have been observed in A=120—140 mass region.The occupation of vi13/2 orbit is generally considered as the important cause.vi13/2 band head energy and deformation of odd N nuclei for Z=56—64 and N=69—77 has been calculated systematically with our modified Nilsson κ,μ parameters in this mass region.Results show that on the one hand,the occupation of vi13/2 orbit does favor the superdeformation tendency of nuclei; and on the other hand,the possible candidates of low lying vi13/2 configuration for experimental observation.

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