Particle-Number Conserving Analysis for High K Multi-Quasiparticle Bands in Odd-A Deformed Nuclei <SUP>173,175</SUP>Hf

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

Chinese Physics C> 2002, Vol. 26> Issue(4) : 371-376

Particle-Number Conserving Analysis for High K Multi-Quasiparticle Bands in Odd-A Deformed Nuclei ^173,175Hf

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

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Using the Particle-number Conserving (PNC) method for treating the cranked shell model, the high K multi-quasiparticle bands in odd-A deformed nuclei ^173,175Hf are analyzed, including the variation with rotational frequency of the moment of inertia, angular momentum alignment and occupation probability of each cranked Nilsson orbital. No free parameters are involved in the PNC calculation and the experimental results are reproduced well. The microscopic mechanism of the difference between the multi-quasiparticle high K bands and the yrast bands in neighboring even-even nuclei is investigated, where the blocking effects of high j intruder orbitals near the Fermi surface play a crucial role.

References

[1]

GONG lun-Xun, LIU Shu-Xin, ZENG Jin-Yan. High Energy Phys. and Nucl. Phys., 2002, 26(2): 164(in Chinese)(龚伦训, 刘树新, 曾谨言. 高能物理与核物理, 2002, 26(2): 164)2 Cullen D M et al.Phys. Rev., 1995, C52: 24153 Gjφrup N L et al. Nucl. Phys., 1995. A582: 3694 Firestone R B et al. Table of Isotopes, 1996, CD-ROM5 Walker P M et al . Phys. Rev. Lett., 1990, 65: 4166 Walker P M et al. Phys. Rev, 1994, C49: 17187 Chowdhury P et al. Nucl. Phys., 1999, A654: 651c8 Sood P S et al. At. Data and Nucl. Data Tables, 1991, 47: 899 Dasgupta M et al. Phys. Lett., 1994, B328: 1610 Nilsson S G et al. Nucl. Phys., 1969, A131: 111 Rengtsson R, Fraundorf S, May F R. At. Data and Nuel.Data Tables, 1989, 35:1512 Bengtsson T, Ragnarsson 1. Nucl.Phys., 1985, A436: 1413 ZENG J Y, LIU S X, LEI Y A et al. Phys. Rev., 2001, C63: 02430514 ZENG J Y, JIN T H, ZHAO Z J. Phys. Rev., 1994, C50: 138815 ZENG J Y, LEI Y A, JIN T H et al. Phys. Rev., 1994, C50: 7

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GONG Lun-Xun, LIU Shu-Xin, ZHU Hong-Bo and ZENG Jin-Yan. Particle-Number Conserving Analysis for High K Multi-Quasiparticle Bands in Odd-A Deformed Nuclei ^173,175Hf[J]. Chinese Physics C, 2002, 26(4): 371-376.

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Received: 2000-06-19
Revised: 1900-01-01

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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 Analysis for High K Multi-Quasiparticle Bands in Odd-A Deformed Nuclei ^173,175Hf

Corresponding author: GONG Lun-Xun,

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

Received Date: 2000-06-19

Accepted Date: 1900-01-01

Available Online: 2002-04-05

Abstract: Using the Particle-number Conserving (PNC) method for treating the cranked shell model, the high K multi-quasiparticle bands in odd-A deformed nuclei ^173,175Hf are analyzed, including the variation with rotational frequency of the moment of inertia, angular momentum alignment and occupation probability of each cranked Nilsson orbital. No free parameters are involved in the PNC calculation and the experimental results are reproduced well. The microscopic mechanism of the difference between the multi-quasiparticle high K bands and the yrast bands in neighboring even-even nuclei is investigated, where the blocking effects of high j intruder orbitals near the Fermi surface play a crucial role.

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Particle-Number Conserving Analysis for High K Multi-Quasiparticle Bands in Odd-A Deformed Nuclei ^173,175Hf

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Particle-Number Conserving Analysis for High K Multi-Quasiparticle Bands in Odd-A Deformed Nuclei 173,175Hf

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Particle-Number Conserving Analysis for High K Multi-Quasiparticle Bands in Odd-A Deformed Nuclei 173,175Hf

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Particle-Number Conserving Analysis for High K Multi-Quasiparticle Bands in Odd-A Deformed Nuclei ^173,175Hf

Particle-Number Conserving Analysis for High K Multi-Quasiparticle Bands in Odd-A Deformed Nuclei ^173,175Hf