Chiral Doublet Bands in Nuclei with Asymmetric Particle-Hole Configuration

ZHANG Shuang-Quan; PENG Jing; MENG Jie

Chinese Physics C> 2004, Vol. 28> Issue(2) : 161-166

Chiral Doublet Bands in Nuclei with Asymmetric Particle-Hole Configuration

School of Physics,Peking University,Beijing 100871,China2 Institute of Theoretical Physics,Chinese Academy of Science,Beijing 100080,China3 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,China

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Abstract：
Based on the triaxial particle-rotor model (PRM), the chiral doublet bands with symmetric particle-hole configurations πg9/2νg-1 9/2, πh11/2νh-1 11/2 and asymmetric configurations πg-1 9/2νh11/2, πh -1 11/2νi13/2 have been investigated, including their rotation spectra, the relations between spin and rotational frequency, and the reduced B(E2),B(M1) transition probabilities. These configurations correspond to regions A～100, A～130 and A～170 in nuclear chart respectively. It is observed that the larger angular momentum provided by the valence nucleons, the higher the spin corresponding to the appearance of the chiral doublet bands, and the broader their spin interval. The chiral bands based on asymmetric configurations exhibit quite similar properties as those on symmetric ones, and can be discovered in future in-beam γ experiments.

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[1]

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ZHANG Shuang-Quan, PENG Jing and MENG Jie. Chiral Doublet Bands in Nuclei with Asymmetric Particle-Hole Configuration[J]. Chinese Physics C, 2004, 28(2): 161-166.

ZHANG Shuang-Quan, PENG Jing and MENG Jie. Chiral Doublet Bands in Nuclei with Asymmetric Particle-Hole Configuration[J]. Chinese Physics C, 2004, 28(2): 161-166. shu

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Received: 2003-06-02
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

Chiral Doublet Bands in Nuclei with Asymmetric Particle-Hole Configuration

Corresponding author: MENG Jie,

School of Physics,Peking University,Beijing 100871,China2 Institute of Theoretical Physics,Chinese Academy of Science,Beijing 100080,China3 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,China

Received Date: 2003-06-02

Accepted Date: 1900-01-01

Available Online: 2004-02-05

Abstract: Based on the triaxial particle-rotor model (PRM), the chiral doublet bands with symmetric particle-hole configurations πg9/2νg-1 9/2, πh11/2νh-1 11/2 and asymmetric configurations πg-1 9/2νh11/2, πh -1 11/2νi13/2 have been investigated, including their rotation spectra, the relations between spin and rotational frequency, and the reduced B(E2),B(M1) transition probabilities. These configurations correspond to regions A～100, A～130 and A～170 in nuclear chart respectively. It is observed that the larger angular momentum provided by the valence nucleons, the higher the spin corresponding to the appearance of the chiral doublet bands, and the broader their spin interval. The chiral bands based on asymmetric configurations exhibit quite similar properties as those on symmetric ones, and can be discovered in future in-beam γ experiments.

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Chiral Doublet Bands in Nuclei with Asymmetric Particle-Hole Configuration

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