High Spin States and Shape Coexistence in <SUP>134</SUP>Ce

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

Chinese Physics C> 2005, Vol. 29> Issue(2) : 130-138

High Spin States and Shape Coexistence in ¹³⁴Ce

Department of Physics,Tsinghua University,Beijing 100084,China2 China Institute of Atomic Energy,Beijing 102413,China

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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 h_11/2 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 h_11/2 and g_7/2 proton configuration probably have a prolate deformation with γ≈0°.

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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.

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Received: 2004-06-22
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Received Date: 2004-06-22

Accepted Date: 1900-01-01

Available Online: 2005-02-05

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 h_11/2 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 h_11/2 and g_7/2 proton configuration probably have a prolate deformation with γ≈0°.

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High Spin States and Shape Coexistence in ¹³⁴Ce

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High Spin States and Shape Coexistence in 134Ce

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High Spin States and Shape Coexistence in 134Ce

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High Spin States and Shape Coexistence in ¹³⁴Ce

High Spin States and Shape Coexistence in ¹³⁴Ce