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

Structure change of¹⁵⁶Yb at high-spin states

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Abstract：
High-spin states of¹⁵⁶Yb have been studied via the¹⁴⁴Sm(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 in¹⁵⁶Yb 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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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 of¹⁵⁶Yb 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 of¹⁵⁶Yb have been studied via the¹⁴⁴Sm(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 in¹⁵⁶Yb 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 of¹⁵⁶Yb at high-spin states

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