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Spectra Statistics for the Odd-Odd Nucleus 86Nb |
| ZHENG Ren-Rong1;ZHU Shun-Quan1;CHENG Nan-Pu1,2 |
| 1Department of Physics, Shanghai Normal University,
Shanghai 200234
2Department of Physics, Southwest Normal University, Chongqing 400715
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| Cite this article: |
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ZHENG Ren-Rong, ZHU Shun-Quan, CHENG Nan-Pu 2001 Chin. Phys. Lett. 18 1327-1330 |
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Abstract The energy levels of the odd-odd nucleus 86Nb at low spins are calculated by using quasi-particles plus a rotor model. The distribution of the nearest-neighbor spacing and the spectral rigidity are studied. We find that the chaotic degree of the energy spectra increases with the increasing spin and reaches a maximum at I = 10; then it decreases gradually for the spins above I = 10. The recoil term in the model Hamiltonian makes the energy spectra slightly regular. The Coriolis force, however, makes the spectra chaotic and plays a major role in the spectral statistics of the odd-odd nucleus 86Nb.
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| Keywords:
21.10.-k
21.60.-n
24.60.-k
24.60.Lz
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Published: 01 October 2001
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| PACS: |
21.10.-k
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(Properties of nuclei; nuclear energy levels)
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21.60.-n
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(Nuclear structure models and methods)
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24.60.-k
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(Statistical theory and fluctuations)
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24.60.Lz
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(Chaos in nuclear systems)
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