Evidence for coexisting prolate and near-oblate shapes at high spin in <sup>125</sup>Cs

Ji Sun; Tetsuro Komatsubara; Jia-Qi Wang; Hao Guo; Xue-Yuan Hu; Ying-Jun Ma; Yun-Zuo Liu; Kohei Furuno

doi:10.1088/1674-1137/40/12/124001

Chinese Physics C> 2016, Vol. 40> Issue(12) : 124001 DOI: 10.1088/1674-1137/40/12/124001

Evidence for coexisting prolate and near-oblate shapes at high spin in ¹²⁵Cs

1.
College of Physics, Jilin University, Changchun 130012, China
2.
Research Facility Center for Pure and Applied Science, University of Tsukuba, Ibaraki 305-8577, Japan

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Abstract：
Excited states in the odd-proton nucleus ¹²⁵Cs were investigated by means of in-beam γ-ray spectroscopy. The πg_7/2 band is observed to fork into a ΔI=1 coupled band and a ΔI=2 decoupled band at high spins. To assign the possible configurations of these two bands, experimental B(M1)/B(E2) ratios and signature splittings have been evaluated for the ΔI=1 band, and calculations based on the geometrical model, cranked shell model and total Routhian surfaces model have been performed. They are suggested to be a near-oblate band built on the (πg_7/2/d_5/2)⊗(νh_11/2)² configuration and a prolate band built on the πg_7/2⊗(π h_11/2)² configuration, respectively.
- shape coexistence ,
- band crossing ,
- rotational band ,
- high spin state ,
- 125Cs

References

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Ji Sun, Tetsuro Komatsubara, Jia-Qi Wang, Hao Guo, Xue-Yuan Hu, Ying-Jun Ma, Yun-Zuo Liu and Kohei Furuno. Evidence for coexisting prolate and near-oblate shapes at high spin in ¹²⁵Cs[J]. Chinese Physics C, 2016, 40(12): 124001. doi: 10.1088/1674-1137/40/12/124001

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Received: 2016-08-19

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Supported in part by National Natural Science Foundation of China (11475072)

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Evidence for coexisting prolate and near-oblate shapes at high spin in ¹²⁵Cs

Corresponding author: Ying-Jun Ma, myj@jlu.edu.cn

1. College of Physics, Jilin University, Changchun 130012, China

2. Research Facility Center for Pure and Applied Science, University of Tsukuba, Ibaraki 305-8577, Japan

Received Date: 2016-08-19

Available Online: 2016-12-05

Fund Project: Supported in part by National Natural Science Foundation of China (11475072)

Abstract: Excited states in the odd-proton nucleus ¹²⁵Cs were investigated by means of in-beam γ-ray spectroscopy. The πg_7/2 band is observed to fork into a ΔI=1 coupled band and a ΔI=2 decoupled band at high spins. To assign the possible configurations of these two bands, experimental B(M1)/B(E2) ratios and signature splittings have been evaluated for the ΔI=1 band, and calculations based on the geometrical model, cranked shell model and total Routhian surfaces model have been performed. They are suggested to be a near-oblate band built on the (πg_7/2/d_5/2)⊗(νh_11/2)² configuration and a prolate band built on the πg_7/2⊗(π h_11/2)² configuration, respectively.

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Evidence for coexisting prolate and near-oblate shapes at high spin in ¹²⁵Cs

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Evidence for coexisting prolate and near-oblate shapes at high spin in ¹²⁵Cs

Corresponding author: Ying-Jun Ma, myj@jlu.edu.cn

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Evidence for coexisting prolate and near-oblate shapes at high spin in 125Cs

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通讯作者: 陈斌, bchen63@163.com

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Evidence for coexisting prolate and near-oblate shapes at high spin in 125Cs

Corresponding author: Ying-Jun Ma, myj@jlu.edu.cn

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Evidence for coexisting prolate and near-oblate shapes at high spin in ¹²⁵Cs

Evidence for coexisting prolate and near-oblate shapes at high spin in ¹²⁵Cs