Collective Band Structures in Neutron-Rich Odd-A 145,147Ce Nuclei

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ZHU ShengJiang, GAN CuiYun, ZHU LingYan, YANG LiMing, XU RuiQing, JON MyonGil, JIANG Zhuo, ZHANG Zheng and Collective Band Structures in Neutron-Rich Odd-A 145,147Ce Nuclei[J]. Chinese Physics C, 2000, 24(11): 1018-1023.
ZHU ShengJiang, GAN CuiYun, ZHU LingYan, YANG LiMing, XU RuiQing, JON MyonGil, JIANG Zhuo, ZHANG Zheng and Collective Band Structures in Neutron-Rich Odd-A 145,147Ce Nuclei[J]. Chinese Physics C, 2000, 24(11): 1018-1023. shu
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Received: 1999-10-27
Revised: 1900-01-01
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Collective Band Structures in Neutron-Rich Odd-A 145,147Ce Nuclei

    Corresponding author: ZHU ShengJiang,
  • Department of Physics, Tsinghua University, Beijing 100084, China1 Department of Physics, Vanderbilt University, Nashville, TN 37235, USA2 Department of physics, Mississippi State University, MS 39762, USA3 Idaho National Engineering Laboratory, Idaho Falls, In 83415, USA4 Lawrence Berkeley Laboratory, Berkeley, CA 94720, USA5 Joint Institute for Nuclear Research, Dubna 141980, Russia

Abstract: Through study of the prompt r-rays emitted in the spontaneous fission of 252Cf, high spin states of neutron-rich odd-A 145,147Ce nuclei have been investigated. The levels in 147Ce have been extended. A collective band in 145Ce have been identified for the first time. The results from the particle rotor model calculations indicate that the yrast bands in 145Ce and 147Ce originate from vi13/2 orbital coupling and the ground states of 145Ce and 147Ce originate from (vh9/2,vf7/2) and vh9/2 configiration, respectively. No obvious octupole deformation was observed in these two isotopes, but a side band obtained in 147Ce may show some octupole correlations.

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