Octupole correlations in stable nucleus 153Eu within reflection-asymmetric particle rotor model

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外文标题：Octupole correlations in stable nucleus 153Eu within reflection-asymmetric particle rotor model

外文摘要：The observed low-lying K=5/2±positive-and negative-parity bands in the stable nucleus 153Eu are in-vestigated using the reflection-asymmetric triaxial particle rotor model.The experimental energy spectra,energy staggering parameters,and intraband E2 and Ml transition probabilities are well reproduced.The calculated interb-and B(E1)values are found to depend sensitively on the octupole deformation parameter β30,although the energy spectra and intraband E2 and Ml transitions can be reproduced without the octupole degree of freedom.The ob-served enhanced E1 transition probabilities can be reproduced with β30=0.05.The detailed analysis of the intrinsic wave functions shows these nearly degenerate positive-and negative-parity bands are built on two individual proton configurations,i.e.,dominated by πg7/2[Ω=5/2]and πh11/2[Ω=5/2],respectively,which differs from the parity doublet bands built on a single parity-mixed configuration.

外文关键词：

octupole correlationsparity doublet bandselectromagnetic transitionsreflection-asymmet-ric triaxial particle rotor model

作者：

王媛媛、张双全

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作者单位：

Mathematics and Physics Department,North China Electric Power University,Beijing 102206,China

Hebei Key Laboratory of Physics and Energy Technology,North China Electric Power University,Baoding 071000,China

State Key Laboratory of Nuclear Physics and Technology,School of Physics,Peking University,Beijing 100871,China

关键词：

octupole correlations parity doublet bands electromagnetic transitions reflection-asymmet-ric triaxial particle rotor model

出版年：

2025

DOI：

10.1088/1674-1137/ad78d6

中国物理C(英文版)

中国物理学会　中国科学院高能物理研究所　中国科学院近代物理研究所

中国物理C(英文版)

影响因子：0.347

ISSN：1674-1137

年,卷(期)：2025.49(1)