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Chinese Physics C> 2009, Vol. 33> Issue(S1) : 185-187 DOI: 10.1088/1674-1137/33/S1/059

High spin band structure in 139Nd

  • High-spin states in 139Nd nucleus have been reinvestigated with the reaction 128Te (16O, 5n) at a beam energy of 90 MeV. The level scheme has been expanded with spin up to 47/2 h. At the low spin states, the yrast collective structure built on the νh11 / 2－1 multiplet shows a transitional shape with γ≈32° according to calculations of the triaxial rotor-plus-particle model. Three collective oblate bands with γ~－60° at the high spin states were identified for the first time. A band crossing is observed around hω~0.4 MeV in one oblate band based on the 25/2－ level.
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XU Qiang, ZHU Sheng-Jiang, CHE Xing-Lai, DING Huai-Bo, GU Long, ZHU Li-Hua, WU Xiao-Guang, LIU Ying, HE Chuang-Ye, LI Li-Hua, PAN Bo, HAO Xin and LI Guang-Sheng. High spin band structure in 139Nd[J]. Chinese Physics C, 2009, 33(S1): 185-187. doi: 10.1088/1674-1137/33/S1/059
XU Qiang, ZHU Sheng-Jiang, CHE Xing-Lai, DING Huai-Bo, GU Long, ZHU Li-Hua, WU Xiao-Guang, LIU Ying, HE Chuang-Ye, LI Li-Hua, PAN Bo, HAO Xin and LI Guang-Sheng. High spin band structure in 139Nd[J]. Chinese Physics C, 2009, 33(S1): 185-187.  doi: 10.1088/1674-1137/33/S1/059 shu
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Received: 2008-10-23
Revised: 1900-01-01
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High spin band structure in 139Nd

    Corresponding author: XU Qiang,
  • Received Date: 2008-10-23
  • Accepted Date: 1900-01-01
  • Available Online: 2009-01-10

Abstract: High-spin states in 139Nd nucleus have been reinvestigated with the reaction 128Te (16O, 5n) at a beam energy of 90 MeV. The level scheme has been expanded with spin up to 47/2 h. At the low spin states, the yrast collective structure built on the νh11 / 2－1 multiplet shows a transitional shape with γ≈32° according to calculations of the triaxial rotor-plus-particle model. Three collective oblate bands with γ~－60° at the high spin states were identified for the first time. A band crossing is observed around hω~0.4 MeV in one oblate band based on the 25/2－ level.

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