Study of Multi-Quasiparticle Excited States in 139Ce

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HUA Wei, ZHOU Xiao-Hong, ZHANG Yu-Hu, GUO Ying-Xiang, LEI Xiang-Guo, XIE Cheng-Ying, SONG Li-Tao and WANG Hua-Lei. Study of Multi-Quasiparticle Excited States in 139Ce[J]. Chinese Physics C, 2007, 31(4): 357-360.
HUA Wei, ZHOU Xiao-Hong, ZHANG Yu-Hu, GUO Ying-Xiang, LEI Xiang-Guo, XIE Cheng-Ying, SONG Li-Tao and WANG Hua-Lei. Study of Multi-Quasiparticle Excited States in 139Ce[J]. Chinese Physics C, 2007, 31(4): 357-360. shu
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Received: 2006-06-01
Revised: 2006-08-22
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Study of Multi-Quasiparticle Excited States in 139Ce

    Corresponding author: ZHOU Xiao-Hong,
  • Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Abstract: High-spin states in 139Ce have been populated using the 130Te(12C,3n) reaction at beam energy of 50MeV. The level scheme of 139Ce has been revised and extended greatly up to E=5765.0keV. The level structure of 139Ce shows typical characteristics of spherical nucleus, and the high-spin states were formed by the excitations of valence nucleons. Energies of the yrast and near yrast high-spin states in 139Ce have been calculated by the empirical shell model, and the multi-quasiparticle nature of high-spin excited states has been discussed.

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