Particle-Number Conserving Calculation for Low-Lying Excited High-K Multi-Quasiparticle Bands in <SUP>172,174</SUP>Hf

GONG Lun-Xun; LIU Shu-Xin; ZHU Hong-Bo; ZENG Jin-Yan

Chinese Physics C> 2002, Vol. 26> Issue(2) : 164-171

Particle-Number Conserving Calculation for Low-Lying Excited High-K Multi-Quasiparticle Bands in ^172,174Hf

Department of Physics,Peking University,Beijing 100871,China2 Institute of Theoretical Physics,CAS,Beijing 100080,China3 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,China4 Department of Physics,Guizhou Normal Uniuersity,Guiyang 550001,China

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Using the particle-number conserving method for treating the cranked shell model,the microscopic mechanism of the variation of the kinematic moments of inertia with rotational frequency ω for the rare-earth deformed nuclei ^172,174Hf is investigated. The observed J⁽¹⁾ and angular momentum alignment are reproduced satisfactorily in the PNC calculation,in which no free parameters are involved. The PNC analysis shows that the difference between the variations of J⁽¹⁾ with ω for the high K multi-quasiparticle bands and for ground state band is mainly due to the Pauli blocking effect of high j intruder orbitals near the Fermi surface.

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GONG Lun-Xun, LIU Shu-Xin, ZHU Hong-Bo and ZENG Jin-Yan. Particle-Number Conserving Calculation for Low-Lying Excited High-K Multi-Quasiparticle Bands in ^172,174Hf[J]. Chinese Physics C, 2002, 26(2): 164-171.

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Received: 2001-04-18
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Particle-Number Conserving Calculation for Low-Lying Excited High-K Multi-Quasiparticle Bands in ^172,174Hf

Corresponding author: GONG Lun-Xun,

Department of Physics,Peking University,Beijing 100871,China2 Institute of Theoretical Physics,CAS,Beijing 100080,China3 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,China4 Department of Physics,Guizhou Normal Uniuersity,Guiyang 550001,China

Received Date: 2001-04-18

Accepted Date: 1900-01-01

Available Online: 2002-02-05

Abstract: Using the particle-number conserving method for treating the cranked shell model,the microscopic mechanism of the variation of the kinematic moments of inertia with rotational frequency ω for the rare-earth deformed nuclei ^172,174Hf is investigated. The observed J⁽¹⁾ and angular momentum alignment are reproduced satisfactorily in the PNC calculation,in which no free parameters are involved. The PNC analysis shows that the difference between the variations of J⁽¹⁾ with ω for the high K multi-quasiparticle bands and for ground state band is mainly due to the Pauli blocking effect of high j intruder orbitals near the Fermi surface.

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Particle-Number Conserving Calculation for Low-Lying Excited High-K Multi-Quasiparticle Bands in ^172,174Hf

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Particle-Number Conserving Calculation for Low-Lying Excited High-K Multi-Quasiparticle Bands in ^172,174Hf

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Particle-Number Conserving Calculation for Low-Lying Excited High-K Multi-Quasiparticle Bands in 172,174Hf

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Particle-Number Conserving Calculation for Low-Lying Excited High-K Multi-Quasiparticle Bands in 172,174Hf

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Particle-Number Conserving Calculation for Low-Lying Excited High-K Multi-Quasiparticle Bands in ^172,174Hf

Particle-Number Conserving Calculation for Low-Lying Excited High-K Multi-Quasiparticle Bands in ^172,174Hf