Shape Co-existence in the transitional nuclide 157Yb

Chuan Xu; Hui Hua; Xiangqing Li; Shuangquan Zhang; Furong Xu; Yue Shi; Lihua Zhu; Xiaoguang Wu; Guangsheng Li; Chuangye He

doi:10.1088/1009-0630/14/6/16

Shape Co-existence in the transitional nuclide ¹⁵⁷Yb

Chuan Xu
, Hui Hua^*
, Xiangqing Li
, Shuangquan Zhang
, Furong Xu
, Yue Shi
, Lihua Zhu
, Xiaoguang Wu
, Guangsheng Li
, Chuangye He

^*Corresponding author for this work

Peking University
China National Nuclear Corporation

Research output: Contribution to journal › Article › peer-review

Abstract

High-spin states in ¹⁵⁷Yb have been populated in the ¹⁴⁴Sm( ¹⁶O, 3n) ¹⁵⁷Yb fusion-evaporation reaction at a beam energy of 85 MeV, and two rotational bands have been established for the first time. Within the framework of the triaxial particle-rotor model, the energy spectra and single-particle configurations of ¹⁵⁷Yb are investigated. The calculated energy spectra agree well with the experimental data. The newly observed νf _7/2 band, and the previously known νi _13/2 band in ¹⁵⁷Yb, are also discussed by means of Total-Routhian-Surface methods. The structural characters observed in ¹⁵⁷Yb provide evidence for the shape coexistence of three distinct shapes: prolate, triaxial and oblate. At higher spins, both the νf _7/2 band and the νi _13/2 band in ¹⁵⁷Yb undergo a shape evolution with sizable alignments occurring.

Original language	English
Pages (from-to)	510-513
Number of pages	4
Journal	Plasma Science and Technology
Volume	14
Issue number	6
DOIs	https://doi.org/10.1088/1009-0630/14/6/16
State	Published - Jun 2012
Externally published	Yes

Keywords

Total-Routhian-Surface
Yb
shape coexistence
shape evolution
triaxial particle-rotor model

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10.1088/1009-0630/14/6/16

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@article{2b62041488c94aeabfd2673b52f095eb,

title = "Shape Co-existence in the transitional nuclide 157Yb",

abstract = "High-spin states in 157Yb have been populated in the 144Sm( 16O, 3n) 157Yb fusion-evaporation reaction at a beam energy of 85 MeV, and two rotational bands have been established for the first time. Within the framework of the triaxial particle-rotor model, the energy spectra and single-particle configurations of 157Yb are investigated. The calculated energy spectra agree well with the experimental data. The newly observed νf 7/2 band, and the previously known νi 13/2 band in 157Yb, are also discussed by means of Total-Routhian-Surface methods. The structural characters observed in 157Yb provide evidence for the shape coexistence of three distinct shapes: prolate, triaxial and oblate. At higher spins, both the νf 7/2 band and the νi 13/2 band in 157Yb undergo a shape evolution with sizable alignments occurring.",

keywords = "Total-Routhian-Surface, Yb, shape coexistence, shape evolution, triaxial particle-rotor model",

author = "Chuan Xu and Hui Hua and Xiangqing Li and Shuangquan Zhang and Furong Xu and Yue Shi and Lihua Zhu and Xiaoguang Wu and Guangsheng Li and Chuangye He",

year = "2012",

month = jun,

doi = "10.1088/1009-0630/14/6/16",

language = "英语",

volume = "14",

pages = "510--513",

journal = "Plasma Science and Technology",

issn = "1009-0630",

publisher = "Institute of Physics",

number = "6",

}

TY - JOUR

T1 - Shape Co-existence in the transitional nuclide 157Yb

AU - Xu, Chuan

AU - Hua, Hui

AU - Li, Xiangqing

AU - Zhang, Shuangquan

AU - Xu, Furong

AU - Shi, Yue

AU - Zhu, Lihua

AU - Wu, Xiaoguang

AU - Li, Guangsheng

AU - He, Chuangye

PY - 2012/6

Y1 - 2012/6

N2 - High-spin states in 157Yb have been populated in the 144Sm( 16O, 3n) 157Yb fusion-evaporation reaction at a beam energy of 85 MeV, and two rotational bands have been established for the first time. Within the framework of the triaxial particle-rotor model, the energy spectra and single-particle configurations of 157Yb are investigated. The calculated energy spectra agree well with the experimental data. The newly observed νf 7/2 band, and the previously known νi 13/2 band in 157Yb, are also discussed by means of Total-Routhian-Surface methods. The structural characters observed in 157Yb provide evidence for the shape coexistence of three distinct shapes: prolate, triaxial and oblate. At higher spins, both the νf 7/2 band and the νi 13/2 band in 157Yb undergo a shape evolution with sizable alignments occurring.

AB - High-spin states in 157Yb have been populated in the 144Sm( 16O, 3n) 157Yb fusion-evaporation reaction at a beam energy of 85 MeV, and two rotational bands have been established for the first time. Within the framework of the triaxial particle-rotor model, the energy spectra and single-particle configurations of 157Yb are investigated. The calculated energy spectra agree well with the experimental data. The newly observed νf 7/2 band, and the previously known νi 13/2 band in 157Yb, are also discussed by means of Total-Routhian-Surface methods. The structural characters observed in 157Yb provide evidence for the shape coexistence of three distinct shapes: prolate, triaxial and oblate. At higher spins, both the νf 7/2 band and the νi 13/2 band in 157Yb undergo a shape evolution with sizable alignments occurring.

KW - Total-Routhian-Surface

KW - Yb

KW - shape coexistence

KW - shape evolution

KW - triaxial particle-rotor model

UR - https://www.scopus.com/pages/publications/84862730537

U2 - 10.1088/1009-0630/14/6/16

DO - 10.1088/1009-0630/14/6/16

M3 - 文章

AN - SCOPUS:84862730537

SN - 1009-0630

VL - 14

SP - 510

EP - 513

JO - Plasma Science and Technology

JF - Plasma Science and Technology

IS - 6

ER -

Shape Co-existence in the transitional nuclide ¹⁵⁷Yb

Abstract

Keywords

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