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Chinese Physics C> 1990, Vol. 14> Issue(11) : 1039-1044 

ON THE BACKBENDING MECHANISM OF MUITIBAND STRUCTURE IN NUCLEUS 185Pt

  •  Center of Theoretical Physics,CCAST World Lab.and Institute of Modern Physics,Academia Sinica,Lanzhou

  • The observation of multi-band structure in nucleus 185Pt reported recently,once again raises the open question about whether the alignment of proton h9/2 pair or neutron i13/2 pair should be responsible to the backbending in five band.Blocking experiments prefer the proton h9/2 pair while the Total Rothian Surface calculation supports neutron i13/2 pair.Based on the analysis of assumptions implied in both approaches,a new theoretical calculation which includes the dynamic effect of band crossing is presented.Such a calculation indicates that the alignment of proton h pair should be the main cause for the observed backbendings.

  • References

    [1] S. Pilotte, et al., Phys. Rev., C40(1989), 610.[2] A. J. Larabee, et al., Phys. Lett., 169B(1986), 21.[3] L. L. Riedinger, V. P. Janzen and M. P. Carpenter, Proc. XXII Winter School on Phyaics, Zakopone, Poland,Part l: Selected Topics in Nuclear Structure. Ed. by R. Broda and Z. Stachura, (1987), 315[4] J. Y. Zhang (张敬业)Poc,. Beijing Internatinal Symposium on "Physics at Tandem" 中国北京, 1986年5月,p.512; R. Bengtsson, et al., Phys. Lett, 183B(1987), 1.[5] V. P. Janzen, et al., Phys. Rev. Lett. 61(1988), 2073.[6] V. P. Janzen, et al., University of Tennessee Progress Report, (1986), 36.[7] A. J. Kreiner, et al., Nucl. Phys , A489(1988), 525.[8] G. Hebbinghau, et al., Z. Phys, A328(1987), 387.[9] J. Y. Zhang (张敬业),F. Donau, L. L. Riedinger, Invited talk "workshop on Microscopic Model in Nuclear Structure Physics", Oct. 4-8, 1988, Oak Ridge, USA.[10] 张敬业，“核形变的动力学效应1.Os的形变”，高能物理与核物理，14(1990), 573.[11] D. L. Hill and J. A. Wheeler, Phys. Rev., 89(1953), 1102.; J. J. Griffin and J. A. Wheeler, Phys. Rev.,108(1957), 311.[12] F. Donau, J. Y. Zhang(张敬业) and L. L. Riedinger, Nucl. Phys, A496(1989), 333.[13] F. S. Stephens and R. S. Simon. Nucl. Phys, A183(1972), 257.[14] J. Y. Zhang(张敬业),Proc. Conf. Nucl. Phys., BerKeley, USA. Aug. 1980, p. 317;张敬业，原子核物理 ,3(1981),193.

  • References

    [1] S. Pilotte, et al., Phys. Rev., C40(1989), 610.[2] A. J. Larabee, et al., Phys. Lett., 169B(1986), 21.[3] L. L. Riedinger, V. P. Janzen and M. P. Carpenter, Proc. XXII Winter School on Phyaics, Zakopone, Poland,Part l: Selected Topics in Nuclear Structure. Ed. by R. Broda and Z. Stachura, (1987), 315[4] J. Y. Zhang (张敬业)Poc,. Beijing Internatinal Symposium on "Physics at Tandem" 中国北京, 1986年5月,p.512; R. Bengtsson, et al., Phys. Lett, 183B(1987), 1.[5] V. P. Janzen, et al., Phys. Rev. Lett. 61(1988), 2073.[6] V. P. Janzen, et al., University of Tennessee Progress Report, (1986), 36.[7] A. J. Kreiner, et al., Nucl. Phys , A489(1988), 525.[8] G. Hebbinghau, et al., Z. Phys, A328(1987), 387.[9] J. Y. Zhang (张敬业),F. Donau, L. L. Riedinger, Invited talk "workshop on Microscopic Model in Nuclear Structure Physics", Oct. 4-8, 1988, Oak Ridge, USA.[10] 张敬业，“核形变的动力学效应1.Os的形变”，高能物理与核物理，14(1990), 573.[11] D. L. Hill and J. A. Wheeler, Phys. Rev., 89(1953), 1102.; J. J. Griffin and J. A. Wheeler, Phys. Rev.,108(1957), 311.[12] F. Donau, J. Y. Zhang(张敬业) and L. L. Riedinger, Nucl. Phys, A496(1989), 333.[13] F. S. Stephens and R. S. Simon. Nucl. Phys, A183(1972), 257.[14] J. Y. Zhang(张敬业),Proc. Conf. Nucl. Phys., BerKeley, USA. Aug. 1980, p. 317;张敬业，原子核物理 ,3(1981),193.

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ZHANG Jing-Ye. ON THE BACKBENDING MECHANISM OF MUITIBAND STRUCTURE IN NUCLEUS 185Pt[J]. Chinese Physics C, 1990, 14(11): 1039-1044.
ZHANG Jing-Ye. ON THE BACKBENDING MECHANISM OF MUITIBAND STRUCTURE IN NUCLEUS 185Pt[J]. Chinese Physics C, 1990, 14(11): 1039-1044. shu
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Received: 1900-01-01
Revised: 1900-01-01
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ON THE BACKBENDING MECHANISM OF MUITIBAND STRUCTURE IN NUCLEUS 185Pt

    Corresponding author: ZHANG Jing-Ye,
  • Center of Theoretical Physics,CCAST World Lab.and Institute of Modern Physics,Academia Sinica,Lanzhou
  • Received Date: 1900-01-01
  • Accepted Date: 1900-01-01
  • Available Online: 1990-11-05

Abstract: The observation of multi-band structure in nucleus 185Pt reported recently,once again raises the open question about whether the alignment of proton h9/2 pair or neutron i13/2 pair should be responsible to the backbending in five band.Blocking experiments prefer the proton h9/2 pair while the Total Rothian Surface calculation supports neutron i13/2 pair.Based on the analysis of assumptions implied in both approaches,a new theoretical calculation which includes the dynamic effect of band crossing is presented.Such a calculation indicates that the alignment of proton h pair should be the main cause for the observed backbendings.

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