Low-Lying Excited High-K Multi-quasiparticle Bands in 178 179Hf

GONG Lun-Xun; YU Lei

Chinese Physics C> 2005, Vol. 29> Issue(10) : 960-963

Low-Lying Excited High-K Multi-quasiparticle Bands in 178 179Hf

GONG Lun-Xun ^, ,
YU Lei

School of Physics,Peking University,Beijing 100871Department of Physics,Guizhou Normal University,Guiyang 550001,China

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Abstract：
Using the particle-number conserving (PNC) method for treating the cranked shell model,the microscopic mechanism of the variation with rotational frequency ω of the kinematics moments of inertia for the rare-earth deformed nuclei ^178,179Hf is investigated. The 2-qp and 4-qp bands in ¹⁷⁸₇₂Hf and 3-qp bands in ¹⁷⁹₇₂Hf are analyzed and calculated.The observed ω variation of J⁽¹⁾ is reproduced satisfactorily in PNC calculations. Our analysis shows that the difference between the ω variations of J⁽¹⁾ for the high K multi-quasiparticle bands and for the ground state band is mainly due to the Pauli blocking effects of high j intruder orbitals near the Fermi surface.

References

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GONG Lun-Xun and YU Lei. Low-Lying Excited High-K Multi-quasiparticle Bands in 178 179Hf[J]. Chinese Physics C, 2005, 29(10): 960-963.

GONG Lun-Xun and YU Lei. Low-Lying Excited High-K Multi-quasiparticle Bands in 178 179Hf[J]. Chinese Physics C, 2005, 29(10): 960-963. shu

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Received: 2005-02-16
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

Low-Lying Excited High-K Multi-quasiparticle Bands in 178 179Hf

GONG Lun-Xun ^,
YU Lei

Corresponding author: GONG Lun-Xun,

School of Physics,Peking University,Beijing 100871Department of Physics,Guizhou Normal University,Guiyang 550001,China

Received Date: 2005-02-16
Accepted Date: 1900-01-01
Available Online: 2005-10-05

Abstract: Using the particle-number conserving (PNC) method for treating the cranked shell model,the microscopic mechanism of the variation with rotational frequency ω of the kinematics moments of inertia for the rare-earth deformed nuclei ^178,179Hf is investigated. The 2-qp and 4-qp bands in ¹⁷⁸₇₂Hf and 3-qp bands in ¹⁷⁹₇₂Hf are analyzed and calculated.The observed ω variation of J⁽¹⁾ is reproduced satisfactorily in PNC calculations. Our analysis shows that the difference between the ω variations of J⁽¹⁾ for the high K multi-quasiparticle bands and for the ground state band is mainly due to the Pauli blocking effects of high j intruder orbitals near the Fermi surface.