Configuration Structure of Superdeformed Bands in A～190 Mass Region

LIU Shu-Xin

Chinese Physics C> 2005, Vol. 29> Issue(9) : 871-874

Configuration Structure of Superdeformed Bands in A～190 Mass Region

LIU Shu-Xin ^,

School of Physics, Peking University, Beijing 100871, ChinaCenter of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 730000, China

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Abstract：
Using the particle-number conservation method for treating the cranked shell model with pairing interaction, we systematically investigate the variations of the moments of inertia, the angular moment alignment and the signature splitting with rotational frequencies for superdeformed bands in the A～190 mass region. According to our calculated results, we provide a global description of the configuration structure of superdeformed bands in the A～190 mass region. Most superdeformed bands are located at the strong-coupling orbits, such as neutron [512]5/2, [624]9/2. A few superdeformed bands lie on high j orbits, i.e., neutron [761]3/2, [752]5/2. Our calculated configuration assignments give a satisfactorily explanation to the general behavior, the anomalous change and the band crossing of superdeformed bands in the A～190 mass region.

References

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. Janssens R V F, Khoo T L. Annu. Rev. Nucl. Part. Sci.,1991, 41: 3212. LIU S X, ZENG J Y. Phys. Rev., 1998, C58: 32663. Riley M A et al. Nucl. Phys., 1990, A512: 1784. Moore E F et al. Phys. Rev. Lett., 1990, 64: 31275. YE D et al. Phys. Rev., 1990, C41: R136. LIU S X, ZENG J Y, ZHAO E G. Phys. Rev., 2002, C66:0243207. LIU S X, ZENG J Y. Nucl. Phys., 2004, A736: 2698. LIU S X, ZENG J Y. Phys. Rev., 2002, C66: 0673019. LIU S X, XIN X B, ZENG J Y. J. Phys., 2000, G26: 7910. LIU Shu-Xin, YU Lei, ZENG Jin-Yan. Chin. Phys. Lett.,2000, 17: 871

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LIU Shu-Xin. Configuration Structure of Superdeformed Bands in A～190 Mass Region[J]. Chinese Physics C, 2005, 29(9): 871-874.

LIU Shu-Xin. Configuration Structure of Superdeformed Bands in A～190 Mass Region[J]. Chinese Physics C, 2005, 29(9): 871-874. shu

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Received: 2005-01-21
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Configuration Structure of Superdeformed Bands in A～190 Mass Region

LIU Shu-Xin ^,

Corresponding author: LIU Shu-Xin,

School of Physics, Peking University, Beijing 100871, ChinaCenter of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 730000, China

Received Date: 2005-01-21
Accepted Date: 1900-01-01
Available Online: 2005-09-05

Abstract: Using the particle-number conservation method for treating the cranked shell model with pairing interaction, we systematically investigate the variations of the moments of inertia, the angular moment alignment and the signature splitting with rotational frequencies for superdeformed bands in the A～190 mass region. According to our calculated results, we provide a global description of the configuration structure of superdeformed bands in the A～190 mass region. Most superdeformed bands are located at the strong-coupling orbits, such as neutron [512]5/2, [624]9/2. A few superdeformed bands lie on high j orbits, i.e., neutron [761]3/2, [752]5/2. Our calculated configuration assignments give a satisfactorily explanation to the general behavior, the anomalous change and the band crossing of superdeformed bands in the A～190 mass region.