Structure change of <SUP>156</SUP>Yb at high-spin states

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; LI Li-Hua

doi:10.1088/1674-1137/33/S1/047

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

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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.

References

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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

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Received: 2008-10-23
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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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Structure change of ¹⁵⁶Yb at high-spin states

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Structure change of ¹⁵⁶Yb at high-spin states

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Structure change of 156Yb at high-spin states

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Structure change of 156Yb at high-spin states

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Structure change of ¹⁵⁶Yb at high-spin states

Structure change of ¹⁵⁶Yb at high-spin states