Particle-Number Conserving Calculation of the Bandhead Moments of Inertia of Identical SD Bands

Jin Taihao; Zhao Zhengji; Zeng Jinyan

Chinese Physics C> 1994, Vol. 18> Issue(3) : 239-248

Particle-Number Conserving Calculation of the Bandhead Moments of Inertia of Identical SD Bands

Department of Physics, Peking University, Beijing 100871

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Abstract：
Using the particle-number conserving(PNC) method for treating the cranked shell model, the bandhead moments of inertia of the superdeformed(SD) bands ¹⁹²Hg and ¹⁹⁴Hg(1,2,3) were calculated. The configuration structures of the SD bands near the bandheads and the mechanism for the variation of bandhead moments of inertia with the pairing interaction strength G were investigated. The analyses show: (1) The difference in the bandhead moments of inertia, δJ₀, is sensitive to the pairing interaction strength, but insensitive to the Nilsson parameters K,μ and the deformation. (2)In A～190 region the pairing interaction still plays an important role and the δJ₀ is mainly attributed to the blocking effect. (3) The pairing interaction strength in SD nuclei seems much weaker than in normally deformed nuclei.

References

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[16]	Xing Zheng , Wang Yangli , Chen Xingqu . A Simple Two-Band Mixing Model of Superdeformed Bands. Chinese Physics C, 1994, 18(1): 62-67.
[17]	Chen Xingqu , Xing Zheng . THE ANALYSIS OF SUPERDEFORMED BANDS IN THE PARTICLE-ROTOR MODEL. Chinese Physics C, 1994, 18(5): 448-453.
[18]	ZHAO Zheng-Ji , JIN Tai-Hao . Microscopic Mechanism of the Variation of the Ground Band Moments of Inertia with Neutron Numbers in ^166—176Yb. Chinese Physics C, 1992, 16(8): 754-761.
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Jin Taihao, Zhao Zhengji and Zeng Jinyan. Particle-Number Conserving Calculation of the Bandhead Moments of Inertia of Identical SD Bands[J]. Chinese Physics C, 1994, 18(3): 239-248.

Jin Taihao, Zhao Zhengji and Zeng Jinyan. Particle-Number Conserving Calculation of the Bandhead Moments of Inertia of Identical SD Bands[J]. Chinese Physics C, 1994, 18(3): 239-248. shu

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Received: 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 Calculation of the Bandhead Moments of Inertia of Identical SD Bands

Corresponding author: Jin Taihao,

Department of Physics, Peking University, Beijing 100871

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1994-03-05

Abstract: Using the particle-number conserving(PNC) method for treating the cranked shell model, the bandhead moments of inertia of the superdeformed(SD) bands ¹⁹²Hg and ¹⁹⁴Hg(1,2,3) were calculated. The configuration structures of the SD bands near the bandheads and the mechanism for the variation of bandhead moments of inertia with the pairing interaction strength G were investigated. The analyses show: (1) The difference in the bandhead moments of inertia, δJ₀, is sensitive to the pairing interaction strength, but insensitive to the Nilsson parameters K,μ and the deformation. (2)In A～190 region the pairing interaction still plays an important role and the δJ₀ is mainly attributed to the blocking effect. (3) The pairing interaction strength in SD nuclei seems much weaker than in normally deformed nuclei.

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Particle-Number Conserving Calculation of the Bandhead Moments of Inertia of Identical SD Bands

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