Original Articles |
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Structure of High Spin States in 87Zr |
ZHAO Guang-yi1,2;LI Guang-sheng1;WU Xiao-guang1;LIU Xiang-an1;WEN Shu-xian1;LU Jing-bin2;YUAN Guan-jun1;YANG Chun-xiang1 |
1China Institute of Atomic Energy, Beijing 102413
2Department of Physics, Jilin University, Changchu 130023
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Cite this article: |
ZHAO Guang-yi, LI Guang-sheng, WU Xiao-guang et al 1999 Chin. Phys. Lett. 16 345-346 |
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Abstract Structure of high spin states in 87Zr was studied through the reaction 59Co(32S, 3pn)87Zr at a beam energy of 118 MeV using in-beam γ-ray spectroscopic method. Measurement of γ-γ coincidence was performed, and directional correlation orientation ratios of some γ rays were determined. The level scheme of 87Zr was established up to spin (37/2+) and (43/2-). Many previously unknown states have been observed. Comparison with neighboring isotones indicates that the effect of neutron on nuclear structure property is predominant compared to proton, and there is a tendency of reduction in band crossing frequency with increasing proton number.
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Keywords:
21.10.-k
23.20.Lv
27.50.+e
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Published: 01 May 1999
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PACS: |
21.10.-k
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(Properties of nuclei; nuclear energy levels)
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23.20.Lv
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(γ-transitions and level energies)
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27.50.+e
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(59 ≤ A ≤ 89)
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