Collective states and shape competition in <sup>126</sup>Te

Liu-Chun He; Yun Zheng; Li-Hua Zhu; Hai-Liang Ma; Xiao-Guang Wu; Chuang-Ye He; Guang-Sheng Li; Lie-Lin Wang; Xin Hao; Ying Liu; Xue-Qin Li; Bo Pan; Zhong-Yu Li; Huai-Bo Ding

doi:10.1088/1674-1137/41/4/044003

Chinese Physics C> 2017, Vol. 41> Issue(4) : 044003 DOI: 10.1088/1674-1137/41/4/044003

Collective states and shape competition in ¹²⁶Te

Liu-Chun He ¹ ,
Yun Zheng ^2,, ,
Li-Hua Zhu ^1,3,, ,
Hai-Liang Ma ² ,
Xiao-Guang Wu ² ,
Chuang-Ye He ² ,
Guang-Sheng Li ² ,
Lie-Lin Wang ^2,4 ,
Xin Hao ^2,3 ,
Ying Liu ² ,
Xue-Qin Li ² ,
Bo Pan ² ,
Zhong-Yu Li ⁵ ,
Huai-Bo Ding ⁶

1.
School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China
2.
China Institute of Atomic Energy, Beijing 102413, China
3.
School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China
4.
Faculty of Science, Shenzhen University, Shenzhen 518060, China
5.
China Institute of Atomic Energy, Beijing 102413, China
6.
Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Mianyang 621010, China
7.
School of Physics, Peking University, Beijing 100871, China
8.
Department of Physics, Tsinghua University, Beijing 100084, China

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Abstract：
High-spin states in ¹²⁶Te have been investigated by using in-beam γ ray spectroscopy with the ¹²⁴Sn(⁷Li, 1p4n)¹²⁶Te reaction at a beam energy of 48 MeV. The previously known level scheme has been enriched, and a new negative-parity sequence has been established. The yrast positive-parity band shows a shape change between triaxial shape and collective oblate shape as a function of spin. In particular, three competitive minima appear in the potential energy surface for the I^π=8⁺ states, with one aligned state at γ=-120° and two triaxial states at γ~30° and -45°, respectively. The signature splitting behavior of the negative-parity band is discussed. The shape change with increasing angular momentum and the signature splitting can be interpreted well in terms of the Cranked Nilsson-Strutinsky-Bogoliubov and Cranked Nilsson-Strutinsky model calculations.
- shape competition ,
- signature splitting ,
- collective states

References

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Liu-Chun He, Yun Zheng, Li-Hua Zhu, Hai-Liang Ma, Xiao-Guang Wu, Chuang-Ye He, Guang-Sheng Li, Lie-Lin Wang, Xin Hao, Ying Liu, Xue-Qin Li, Bo Pan, Zhong-Yu Li and Huai-Bo Ding. Collective states and shape competition in ¹²⁶Te[J]. Chinese Physics C, 2017, 41(4): 044003. doi: 10.1088/1674-1137/41/4/044003

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Received: 2016-10-17
Revised: 2016-12-07

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Supported by National Natural Science Foundation of China (11575018, 11375023, 11305269, 11375267, 11405274, 11205245, 10927507, 10975191, 11075214, 11175259, 11205068)

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沈阳化工大学材料科学与工程学院沈阳 110142

Collective states and shape competition in ¹²⁶Te

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Collective states and shape competition in ¹²⁶Te

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Collective states and shape competition in 126Te

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通讯作者: 陈斌, bchen63@163.com

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Collective states and shape competition in 126Te

Corresponding author: Yun Zheng,

Corresponding author: Li-Hua Zhu,

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Collective states and shape competition in ¹²⁶Te

Collective states and shape competition in ¹²⁶Te