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

Abstract
HTML
Reference
Related

PDF

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

[1]	C. M. Parry et al, Phys. Rev. C, 61:021303(2000)
[2]	A. K. Singh et al, Phys. Rev. C, 70:034315(2004)
[3]	A. Al-Khatib et al, Eur. Phys. J. A, 36:21(2008)
[4]	Gong-Ye Liu et al, Chin. Phys. Lett. 29:092301(2012)
[5]	Y. Liang, D. B. Fossan, J. R. Hughes, D. R. LaFosse, T. Lauritsen, R. Ma, E. S. Paul, P. Vaska, M. P. Waring, N. Xu, Phys. Rev. C, 45:1041(1992)
[6]	S-Y Wang et al, J. Phys. G, 32:283(2006)
[7]	I. Ragnarsson, A. Sobiczewski, R. K. Sheline, S. E. Larsson, B. Nerlo-Pomorska, Nucl. Phys. A, 233:329(1974)
[8]	R. Wyss et al, Nucl. Phys. A, 505:337(1989)
[9]	A. Granderath, P. E. Mantica, R. Bengtsson, R. Wyss, P. von Brentano, A. Gelberg, E Seiffert, Nucl. Phys. A, 597:427(1996)
[10]	Q. Yang, H.-L. Wang, Q.-Z. Chai, M.-L. Liu, Chin. Phys. C, 39:094102(2015)
[11]	S. Y. Wang et al, Phys. Rev. C, 81:017301(2010)
[12]	S. Y. Wang et al, Chin. Phys. Lett., 21:1024(2004)
[13]	D. Ward et al, Nucl. Phys. A, 529:315(1991)
[14]	Ji Sun et al, Phys. Rev. C, 93:064301(2016)
[15]	J. R. Hughes, D. B. Fossan, D. R. LaFosse, Y. Liang, P. Vaska, and M. P. Waring, Phys. Rev. C, 44:2390(1991)
[16]	K. Singh et al, Eur. Phys. J. A, 27:321(2006)
[17]	T. Komatsubara et al, Nucl. Phys. A, 557:419c (1993)
[18]	S.-Y. Wang, Y.-Z. Liu, Y.-J. Ma, T. Komatsubra and Y.-H. Zhang, Phys. Rev. C, 75:037302(2007)
[19]	R. Goswami, B. Sethi and P. Banerjee, Phys. Rev. C, 47:1013(1993)
[20]	R. Bengtsson and S. Frauendorf, Nucl. Phys. A, 327:139(1979)
[21]	W. Nazarewicz, J. Dudek, R. Bengtsson, T. Bengtsson and I. Ragnarsson, Nucl. Phys. A, 435:397(1985)
[22]	Ying-Jun Ma et al, J. Phys. G, 26:43(2000)
[23]	S. Raman, C. W. Nestor Jr., and P. Tikkanen, Atomic Data Nucl. Data Tab., 78:1(2001)
[24]	Kuljeet Singh et al, Eur. Phys. J. A, 25:345(2005)
[25]	Y. Liang, R. Ma, E. S. Paul, N. Xu, D. B. Fossan and R. Wyss, Phys. Rev. C, 42:890(1990)
[26]	S. Sihotra et al, Phys. Rev. C, 79:044317(2009)
[27]	Yan-Xin Zhao et al, Chin. Phys. Lett., 26:092301(2009)

[1]	Honey Sharma , H. M. Mittal . Band head spin determination of triaxial superdeformed bands in ^163,164,165Lu through two-parameter formulae. Chinese Physics C, 2018, 42(11): 114102. doi: 10.1088/1674-1137/42/11/114102
[2]	Honey Sharma , H. M. Mittal . Band head spin assignment of superdeformed bands in Hg isotopes through power index formula. Chinese Physics C, 2018, 42(5): 054104. doi: 10.1088/1674-1137/42/5/054104
[3]	Chen Liu , Shou-Yu Wang , Bin Qi , Hui Jia . Possible candidate nuclei for chirality-parity quartet bands. Chinese Physics C, 2018, 42(7): 074105. doi: 10.1088/1674-1137/42/7/074105
[4]	Da-Li Zhang , Cheng-Fu Mu . Shape coexistence close to N=50 in the neutron-rich isotope ⁸⁰Ge investigated by IBM-2. Chinese Physics C, 2018, 42(3): 034101. doi: 10.1088/1674-1137/42/3/034101
[5]	Zhen-Hua Zhang , Peng Xu . Investigation of the high-spin rotational properties of the proton emitter ¹¹³Cs using a particle-number conserving method. Chinese Physics C, 2017, 41(2): 024103. doi: 10.1088/1674-1137/41/2/024103
[6]	Anshul Dadwal , H. M. Mittal . Band head spin assignment of superdeformed bands in ⁸⁶Zr. Chinese Physics C, 2016, 40(11): 114103. doi: 10.1088/1674-1137/40/11/114103
[7]	BAI Zhi-Jun , FU Xi-Ming , JIAO Chang-Feng , XU Fu-Rong . Shape coexistence and evolution in neutron-deficient krypton isotopes. Chinese Physics C, 2015, 39(9): 094101. doi: 10.1088/1674-1137/39/9/094101
[8]	WU Yang , XU Zhou , LI Zheng-Hong , MA Qiao-Sheng , TANG Chuan-Xiang . High efficiency X-band relativistic backward wave oscillator with non-uniform slow wave structures. Chinese Physics C, 2012, 36(8): 750-752. doi: 10.1088/1674-1137/36/8/011
[9]	Ru no . Development of X-band accelerating structuresfor high gradients. Chinese Physics C, 2012, 36(7): 639-647. doi: 10.1088/1674-1137/36/7/013
[10]	MA Qiao-Sheng , ZHANG Yun-Jian , DENG De-Rong , TAN Jie , LIU Zhong . Design of a high-efficiency C-band backward wave oscillator. Chinese Physics C, 2010, 34(7): 1016-1018. doi: 10.1088/1674-1137/34/7/016
[11]	LI Tao , CHEN Bao-Ren , LIU Shu-Xin . Signature splitting of the πh_11/2 band and high-spin structures in ¹⁵⁵Tb. Chinese Physics C, 2010, 34(7): 958-963. doi: 10.1088/1674-1137/34/7/006
[12]	WANG Jian-Guo , ZHU Sheng-Jiang , DING Huai-Bo , XU Qiang , GU Long , YANG Yun-Yi . Observation of a new rotational band in ¹⁰⁴Nb nucleus. Chinese Physics C, 2009, 33(S1): 158-160. doi: 10.1088/1674-1137/33/S1/050
[13]	XU Qiang , ZHU Sheng-Jiang , CHE Xing-Lai , DING Huai-Bo , GU Long , ZHU Li-Hua , WU Xiao-Guang , LIU Ying , HE Chuang-Ye , LI Li-Hua , PAN Bo , HAO Xin , LI Guang-Sheng . High spin band structure in ¹³⁹Nd. Chinese Physics C, 2009, 33(S1): 185-187. doi: 10.1088/1674-1137/33/S1/059
[14]	ZHENG Shi-Jie , XU Fu-Rong . Shape coexistence of superheavy nuclei. Chinese Physics C, 2008, 32(S2): 152-154.
[15]	WU Xi , LEI Yi-An . Comparison between formulas of rotational band for axially symmetric deformed nuclei. Chinese Physics C, 2008, 32(2): 112-119. doi: 10.1088/1674-1137/32/2/008
[16]	LIU Hong-Liang , XU Fu-Rong . Shape coexistence of high-spin isomeric states in proton-rich A~190 nuclei. Chinese Physics C, 2008, 32(S2): 131-133.
[17]	Zhang Yuhu , Zhao Qingzhong , Zhou Xiaohong , Xu Hushan , Guo Yingxiang , Lei Xiangguo , Lu Jun , Zhu Shaofei , Gou Quanbu , Jin Hanjuan , Liu Zhong , Luo Yixiao , Sun Xiangfa , Zhu Yongtai . Rotational Band Structure in Doubly Odd ¹⁷⁰Ta. Chinese Physics C, 1997, 21(S1): 433-436.
[18]	Xing Zheng , Zeng Wenping , Chen Xingqu , Sun Xiangfu , Liu Zhong . Studies of πh_11/2 Bands in Odd-A^117—125Cs Nuclei. Chinese Physics C, 1996, 20(7): 639-643.
[19]	Sun Xiangfu , Liu Zhong , Zhou Xiaohong , Lei Xiangguo , Jin Hanjuan , Pan Qiangyan , Zhang Yuhu , Guo Yingxiang , Cheng Xinfeng , Luo Yixiao , Wen Shuxian , Yuan Guanjun , Li Guangsheng , Yang Chunxiang . Measurement of the h_11/2 Band of ¹¹⁷Cs. Chinese Physics C, 1994, 18(S4): 341-344.
[20]	Xing Zheng , Wu Xingju . Rotational Effect on Electromagnetic Transitions After Band-Crossing. Chinese Physics C, 1991, 15(S1): 93-100.

Access

Get Citation

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

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2016-08-19

Fund

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

Article Metric

Article Views(1707)
PDF Downloads(99)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

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.

HTML

Reference (27)

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

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

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

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

HTML

目录

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

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

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

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

HTML

目录

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