Shape evolution and test of the critical-point symmetry X(5) in 176Os

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HAO Xin, ZHU Li-Hua, WU Xiao-Guang, LI Guang-Sheng, PAN Bo, WANG Lie-Lin, ZHENG Yun, WANG Lei, LI Xue-Qin, LIU Ying, DING Huai-Bo and LI Zhong-Yu. Shape evolution and test of the critical-point symmetry X(5) in 176Os[J]. Chinese Physics C, 2009, 33(S1): 151-153. doi: 10.1088/1674-1137/33/S1/048
HAO Xin, ZHU Li-Hua, WU Xiao-Guang, LI Guang-Sheng, PAN Bo, WANG Lie-Lin, ZHENG Yun, WANG Lei, LI Xue-Qin, LIU Ying, DING Huai-Bo and LI Zhong-Yu. Shape evolution and test of the critical-point symmetry X(5) in 176Os[J]. Chinese Physics C, 2009, 33(S1): 151-153.  doi: 10.1088/1674-1137/33/S1/048 shu
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Received: 2008-10-23
Revised: 1900-01-01
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Shape evolution and test of the critical-point symmetry X(5) in 176Os

    Corresponding author: HAO Xin,

Abstract: The lifetimes of excited states in the yrast band of 176Os have been measured up to I=20h level using the Doppler shift attenuation method. The high-spin states of 176Os were populated via fusion evaporation reaction 152Sm(28Si, 4n)176Os at a beam energy of 140 MeV. The results support an X(5) structure for 176Os at low spin. This structure disappears at high spin and shows a symmetry rotor character. The shape change of 176Os is similar to that of 178Os.

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