Doublet bands in 128La and systematic features of energy separationof doublet bands observed in the A~130 mass region

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MA Ke-Yan, LU Jing-Bin, YANG Dong, WANG Hui-Dong, LIU Yun-Zuo, LI Jian, LIU Gong-Ye, LI Li, MA Ying-Jun, WU Xiao-Guang, LI Guang-Sheng, ZHENG Yun and HE Chuang-Ye. Doublet bands in 128La and systematic features of energy separationof doublet bands observed in the A~130 mass region[J]. Chinese Physics C, 2013, 37(4): 044001. doi: 10.1088/1674-1137/37/4/044001
MA Ke-Yan, LU Jing-Bin, YANG Dong, WANG Hui-Dong, LIU Yun-Zuo, LI Jian, LIU Gong-Ye, LI Li, MA Ying-Jun, WU Xiao-Guang, LI Guang-Sheng, ZHENG Yun and HE Chuang-Ye. Doublet bands in 128La and systematic features of energy separationof doublet bands observed in the A~130 mass region[J]. Chinese Physics C, 2013, 37(4): 044001.  doi: 10.1088/1674-1137/37/4/044001 shu
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Received: 2012-05-21
Revised: 1900-01-01
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Doublet bands in 128La and systematic features of energy separationof doublet bands observed in the A~130 mass region

    Corresponding author: LU Jing-Bin,

Abstract: High spin states of 128La have been studied through the fusion-evaporation reaction 118Sn(14N, 4n)128La at a beam energy of 69 MeV. A positive-parity side band with the same configuration as that of the yrast band has been identified. Moreover, it is noted that the energy separation ΔE(I)=E(I)side-E(I)yrast of all doublet bands reported in odd-odd nuclei in the A~130 mass region exhibit a staggering pattern systematically, and they stagger up at even-spin and stagger down at odd-spin.

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