High Spin States and Shape Coexistence in 134Ce

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ZHU Sheng-Jiang, GAN Cui-Yun, ZHU Ling-Yan, YANG Li-Ming, LONG Gui-Lu, WUN Shu-Xian, WU Xiao-Guang, LI Guang-Sheng, ZHU Li-Hua and High Spin States and Shape Coexistence in 134Ce[J]. Chinese Physics C, 2005, 29(2): 130-138.
ZHU Sheng-Jiang, GAN Cui-Yun, ZHU Ling-Yan, YANG Li-Ming, LONG Gui-Lu, WUN Shu-Xian, WU Xiao-Guang, LI Guang-Sheng, ZHU Li-Hua and High Spin States and Shape Coexistence in 134Ce[J]. Chinese Physics C, 2005, 29(2): 130-138. shu
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Received: 2004-06-22
Revised: 1900-01-01
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High Spin States and Shape Coexistence in 134Ce

    Corresponding author: ZHU Sheng-Jiang,
  • Department of Physics,Tsinghua University,Beijing 100084,China2 China Institute of Atomic Energy,Beijing 102413,China

Abstract: high spin states in 134Ce nucleus have been studied by using the heavy–ion induced reaction 122Sn(16O,4n) carried out at china institute of atomic energy. the early level scheme has been extended with spin up to 22. however,our result is different from that in a recent publication,and the magnetic rotation bands reported there have not been confirmed. our observed level structures may be interpreted as shape coexistence. the 10+ state at the backbending with h11/2 quasineutron configuration has an oblate deformation with an asymmetry parameter γ≈–60°(lund convention),and the 10+ isomer is a yrast trap of prolate deformation with γ≈–120°,whereas the other signature partner bands with h11/2 and g7/2 proton configuration probably have a prolate deformation with γ≈0°.

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