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Theory study of shapes in ^(187,189)Tl nuclei

science china(Physics,Mechanics & Astronomy) 2009年第6期52卷 818-821页

作者： liu yanxin1, yu shaoying1,2.3, shen caiwan1,5 & dong yongsheng1,2.4.1 school of science, huzhou teachers college, huzhou 313000, china 2 school of science and Information Engineering, Zhejiang Normal University, Jinhua 321000, china 3 Institute of Theoretical Physics, Chinese Academy of sciences, Beijing 100080, china 4 Department of Physics, Jining teachers college, Jining 012000, china 5 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, china school of science Huzhou Teachers College Huzhou China school of science and Information Engineering Zhejiang Normal University Jinhua China Institute of Theoretical Physics Chinese Academy of Sciences Beijing China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou China Department of Physics Jining Teachers College Jining China

The nuclear shapes of 187,189Tl were investigated theoretically in this work. The total routhian surface (TRS) calculations were performed for N=106 and 108 isotopes of thallium (Z=81). The single-particle energies were obtained from the deformed Woods-Saxon potential, with the Lipkin-Nogami (LN) treatment of pairing. It is found that the collective oblate rotation coexists with the high-K prolate rotation. Superdeformed prolate rotation is included in this calculation.

关键词： nuclear shape oblate rotation prolate rotation

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The study of energy bands in nucleus ^(102)Zr

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science china(Physics,Mechanics & Astronomy) 2010年第1期53卷 106-110页

作者： dong GuoXiang 1,2 , yu shaoying 1,2.3 , liu yanxin 1 , shen caiwan 1,2,4 & dong yongsheng 1,2,5I school of science, huzhou teachers college, huzhou 313000, china 2 school of science and Information Engineering, Zhejiang Normal University, Jinhua 321000, china 3 Institute of Theoretical Physics, Chinese Academy of sciences, Beijing 100080, china 4 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, china 5 Department of Physics, Jining teachers college, Jining 012000, china school of science Huzhou Teachers College Huzhou China school of science and Information Engineering Zhejiang Normal University Jinhua China Institute of Theoretical Physics Chinese Academy of Sciences Beijing China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou China Department of Physics Jining Teachers College Jining China

Theoretical calculations of the energy bands in nucleus 102 Zr are carried out by taking the projected shell model approach, which has reproduced the experimental data. In addition, by analyzing band-head energies, corresponding configurations of yrast band, quasi-particle rotational bands and side bands, we have worked out the microscopic formation mechanism of axially symmetric deformation bands: The low-excitation deformation bands are attributed to the high-j intruder states 1g 7/2 and 1h 11/2 in the N=4, 5 shells; the quasi-particles in the orbit v5/2-[532], v3/2+[411] and v3/2+[413] in particular play an important role in the deformation of 102 Zr.

关键词： projected shell model yrast band quasi-particle rotational band side band

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