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Properties of the 3/2^-[521] band in the odd-N rare-earth nuclei 被引量：3

Properties of the 3/2^-[521] band in the odd-N rare-earth nuclei
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摘要 High-spin states in 161Er have been studied experimentally via the 150Nd(16O, 5n) reaction at a beam energy of 86 MeV. Three rotational bands built on the 5/2+[642], 3/2-[521], and 11/2-[505] configurations have been extended up to high-spin states, and particularly, the α = -1/2 branch of the ground state 3/2-[521] band has been revised significantly. It is found that signature inversion occurs in the 3/2-[521] band after the band crossing in 161Er. The systematics of the signature inversion associated with the 3/2-[521] configuration in the rare-earth region is discussed. The band properties are analyzed within the framework of a triaxial particle-rotor model, and a triaxial deformation is proposed to the 3/2-[521] band. High-spin states in 161Er have been studied experimentally via the 150Nd(16O, 5n) reaction at a beam energy of 86 MeV. Three rotational bands built on the 5/2+[642], 3/2-[521], and 11/2-[505] configurations have been extended up to high-spin states, and particularly, the α = -1/2 branch of the ground state 3/2-[521] band has been revised significantly. It is found that signature inversion occurs in the 3/2-[521] band after the band crossing in 161Er. The systematics of the signature inversion associated with the 3/2-[521] configuration in the rare-earth region is discussed. The band properties are analyzed within the framework of a triaxial particle-rotor model, and a triaxial deformation is proposed to the 3/2-[521] band.
作者 CHEN Liang1,2, ZHOU XiaoHong1,2, ZHANG YuHu1, ZHANG ShuangQuan3 & ZHU LiHua4 1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2Graduate University of Chinese Academy of Sciences, Beijing 100049, China 3State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China 4China Institute of Atomic Energy, Beijing 102413, China
出处 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2011年第S1期37-43,共7页 中国科学：物理学、力学、天文学（英文版）
基金 supported bythe National Basic Research Program of China (Grant No. 2007CB815001) the National Natural Science Foundation of China (Grant Nos. 10825522,10735010 and 10575120) the Chinese Academy of Sciences
关键词 HIGH-SPIN STATES SIGNATURE INVERSION TRIAXIAL particle-rotor model high-spin states signature inversion triaxial particle-rotor model
分类号 O571 [理学—粒子物理与原子核物理]
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参考文献24

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同被引文献34

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  • 4NI DongDong1,2 & REN ZhongZhou1,2,3 1Department of Physics, Nanjing University, Nanjing 210093, China,2Kavli Institute for Theoretical Physics China, Beijing 100190, China,3Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou 730000, China.Half-lives and fine structure for the α decay of deformed even-even nuclei[J].Science China(Physics,Mechanics & Astronomy),2011,54(S1):24-31. 被引量：3
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  • 7GAN ZaiGuo1, ZHOU XiaoHong1, HUANG MingHui1, FENG ZhaoQing1 & LI JunQing1,2 1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China,2School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China.Predictions of synthesizing element 119 and 120[J].Science China(Physics,Mechanics & Astronomy),2011,54(S1):61-66. 被引量：5
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Science China(Physics,Mechanics & Astronomy)
2011年 第S1期

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