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Chinese Physics C> 2010, Vol. 34> Issue(4) : 456-459 DOI: 10.1088/1674-1137/34/4/007

Dipole bands in nucleus 139Pm

  • High-spin states in nucleus 139Pm have been studied using the reaction 116Cd(27Al, 4n) 139Pm. Two dipole cascades have been found. Spin and parity assignments were based on the Directional Correlation of Oriented Nuclei (DCO) ratios and systematic behavior in neighboring odd-proton nuclei. The level structures of 139Pm are compared with those of the N=78 isotone 141Eu in which two dipole bands have been confirmed as magnetic rotational bands. The close similarity between them suggests that the dipole bands in 139Pm may be magnetic rotational bands.
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ZHANG Ning-Tao, ZHANG Yu-Hu, ZHOU Xiao-Hong, LIU Min-Liang, ZHENG Yong, GUO Ying-Xiang, CHEN Liang, WANG Shi-Tao, ZHANG Xin, ZHU Li-Hua and WU Xiao-Guang. Dipole bands in nucleus 139Pm[J]. Chinese Physics C, 2010, 34(4): 456-459. doi: 10.1088/1674-1137/34/4/007
ZHANG Ning-Tao, ZHANG Yu-Hu, ZHOU Xiao-Hong, LIU Min-Liang, ZHENG Yong, GUO Ying-Xiang, CHEN Liang, WANG Shi-Tao, ZHANG Xin, ZHU Li-Hua and WU Xiao-Guang. Dipole bands in nucleus 139Pm[J]. Chinese Physics C, 2010, 34(4): 456-459.  doi: 10.1088/1674-1137/34/4/007 shu
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Received: 2009-06-01
Revised: 2009-07-10
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Dipole bands in nucleus 139Pm

    Corresponding author: ZHANG Ning-Tao,
  • Received Date: 2009-06-01
  • Accepted Date: 2009-07-10
  • Available Online: 2010-04-05

Abstract: High-spin states in nucleus 139Pm have been studied using the reaction 116Cd(27Al, 4n) 139Pm. Two dipole cascades have been found. Spin and parity assignments were based on the Directional Correlation of Oriented Nuclei (DCO) ratios and systematic behavior in neighboring odd-proton nuclei. The level structures of 139Pm are compared with those of the N=78 isotone 141Eu in which two dipole bands have been confirmed as magnetic rotational bands. The close similarity between them suggests that the dipole bands in 139Pm may be magnetic rotational bands.

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