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Chinese Physics C> 2009, Vol. 33> Issue(S1) : 148-150 DOI: 10.1088/1674-1137/33/S1/047

Structure change of 156Yb at high-spin states

  • High-spin states of 156Yb have been studied via the 144Sm(16O,4n)156Yb fusion-evaporation reaction at beam energy 102~MeV. The positive-parity yrast band and negative-parity cascade have been extended up to higher-spin states, respectively. The characteristics of the negative-parity sequence above the 25－ state may related to the excitation from the nucleon in the Z=64, N=82 core. The E-GOS curve for the positive-parity yrast sequence in 156Yb indicate that this nucleus may undergo an evolution from quasivibrational to quasirotational structure with increasing angular momentum. The Cranked Woods-Saxon-Strutinsky calculations by means of Total-Routhian-Surface (TRS) methods has been made to understand this structure change.
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    [1] . Nazarewicz W, Riley M A, Garrett J D. Nucl. Phys. A,1990, 512: 61-962. Lalazissisa G A, Sharmab M M, Ring P. Nucl. Phys. A,1996, 597: 35-653. Niksic T, Vretenar D, Lalazissisa G A, Ring P. Phys. Rev.C, 2004, 69: 0473014. Neergard K, Vogel P. Nucl. Phys. A, 1970, 145: 33-805. Faessler A, Ploszajczak M. Z. Phys. A, 1980, 295: 87-1016. Dudek J, Nazarewicz W. Phys. Rev. C, 1985, 31: 298-3017. Lister C J, Horn D, Baktash C, Mateosian E der, KistnerO C, Sunyar A W. Phys. Rev. C, 1981, 23: 2078-2085

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HUA Hui, LI Zhong-Yu, WANG Shou-Yu, MENG Jie, LI Zhi-Huan, LI Xiang-Qing, XU Fu-Rong, LIU Hong-Liang, ZHANG Shuang-Quan, ZHOU Shan-Gui, YE Yan-Lin, JIANG Dong-Xing, ZHENG Tao, ZHU Li-Hua, WU Xiao-Guang, LI Guang-Sheng, HE Chuang-Ye, MA Li-Ying, LU Fei, FAN Feng-Ying, HAN Li-Ying, WANG He, XIAO Jun, LI Xue-Qin, CHEN Dong, FANG Xiao, LOU Jian-Lin, LIU Ying, HAO Xin, PAN Bo and LI Li-Hua. Structure change of 156Yb at high-spin states[J]. Chinese Physics C, 2009, 33(S1): 148-150. doi: 10.1088/1674-1137/33/S1/047
HUA Hui, LI Zhong-Yu, WANG Shou-Yu, MENG Jie, LI Zhi-Huan, LI Xiang-Qing, XU Fu-Rong, LIU Hong-Liang, ZHANG Shuang-Quan, ZHOU Shan-Gui, YE Yan-Lin, JIANG Dong-Xing, ZHENG Tao, ZHU Li-Hua, WU Xiao-Guang, LI Guang-Sheng, HE Chuang-Ye, MA Li-Ying, LU Fei, FAN Feng-Ying, HAN Li-Ying, WANG He, XIAO Jun, LI Xue-Qin, CHEN Dong, FANG Xiao, LOU Jian-Lin, LIU Ying, HAO Xin, PAN Bo and LI Li-Hua. Structure change of 156Yb at high-spin states[J]. Chinese Physics C, 2009, 33(S1): 148-150.  doi: 10.1088/1674-1137/33/S1/047 shu
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Received: 2008-10-23
Revised: 1900-01-01
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Structure change of 156Yb at high-spin states

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

Abstract: High-spin states of 156Yb have been studied via the 144Sm(16O,4n)156Yb fusion-evaporation reaction at beam energy 102~MeV. The positive-parity yrast band and negative-parity cascade have been extended up to higher-spin states, respectively. The characteristics of the negative-parity sequence above the 25－ state may related to the excitation from the nucleon in the Z=64, N=82 core. The E-GOS curve for the positive-parity yrast sequence in 156Yb indicate that this nucleus may undergo an evolution from quasivibrational to quasirotational structure with increasing angular momentum. The Cranked Woods-Saxon-Strutinsky calculations by means of Total-Routhian-Surface (TRS) methods has been made to understand this structure change.

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