Chin. Phys. Lett.  1999, Vol. 16 Issue (5): 345-346    DOI:
Original Articles |
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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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.
Keywords: 21.10.-k      23.20.Lv      27.50.+e     
Published: 01 May 1999
PACS:  21.10.-k (Properties of nuclei; nuclear energy levels)  
  23.20.Lv (γ-transitions and level energies)  
  27.50.+e (59 ≤ A ≤ 89)  
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ZHAO Guang-yi
LI Guang-sheng
WU Xiao-guang
LIU Xiang-an
WEN Shu-xian
LU Jing-bin
YUAN Guan-jun
YANG Chun-xiang
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