Superdeformed Bands with △I = 4 Bifurcation of the Odd-A Nuclei in the A-190 Region

刘玉鑫; 周舰秿; 王稼军

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Superdeformed Bands with △I = 4 Bifurcation of the Odd-A Nuclei in the A-190 Region

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摘要

The γ-ray energy (Eγ) spectra of the superdeformed (SD) bands of odd-A nuclei in the A- 190 mass region are investigated systematically. It is found that a △1 = 4 bifurcation exists in the SD bands. Within the supersymmetry scheme including many-body interactions and a perturbation possessing the SO(5) (or SU(5)) symmetry on the rotational symmetry, the Eγ spectra, dynamical moments of inertia and Eγ differences δ4Eγ(I) of these bands are evaluated. Quantitative good results are obtained which show that the scheme is powerful to describe the △I = 4 bifurcation. The △I = 4 bifurcation may then come from the perturbation holding the SO(5) (or SU(5)) symmetry on the rotation. From a microscopic point of view, the △I = 4 bifurcation may be a result of the combination of theβ-phonon, γ-phonon and the rotation.

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《中国物理快报：英文版》 |2001年第10期|1319-1322|共4页
作者
刘玉鑫; 周舰秿; 王稼军;
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作者单位

Department of Physics;

Peking University;

Beijing 100871;

The Key Laboratory of Heavy Ion Physics;

Ministry of Education Laboratory;

Beijing University;

Beijing 100871;

Institute of Theoretical Physics;

Chinese Academy of Sciences;

P.O.Box 2735y Beijing 100080;

Center of Theoretical Nuclear Physics;

National Laboratory of Heavy Ion Accelerator;

Lanzhou 730000;

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原文格式 PDF
正文语种 chi
中图分类数学分析;
关键词
symmetry; bifurcation; bands;

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1. Identification of Bandhead Spin and Identical Bands for Odd-A Nuclei in A-190 Superdeformed Mass Region [J] . A.S.Shalaby . 理论物理通讯：英文版 . 2004,第3期
2. Description of the Superdeformed Bands of Odd-Odd Nuclei in A～80 Region [J] . ZHANGDa-Li . 理论物理通讯：英文版 . 2005,第2期
3. Systematic Study on the Superdeformed Bands of Double Odd Nuclei in A～130 Region [J] . ZAHNGDa-Li ,LIJin-Bo ,DINGBin-Gang . 理论物理通讯：英文版 . 2003,第3x期

Superdeformed Bands with △I = 4 Bifurcation of the Odd-A Nuclei in the A-190 Region

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