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

Jin Taihao; Zhao Zhengji; Zeng Jinyan

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2024年10月30日

Chinese Physics C> 1993, Vol. 17> Issue(S4) : 411-421

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

Department of Physics, Peking University, Beijing, China

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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(l,2,3) were calculated. The configuration structures of the SD bands near the bandheads and the mechanism of the variation of bandhead moments of inertia with the pairing interaction strength G were investigated. The analysis shows that:
(1) the difference between the bandhead moments of inertia, δJ₀, is sensitive to the pairing interaction strength, but insensitive to the Nilsson parameters κ, μ and the deformation;
(2) in the 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 the SD nuclei seems much weaker than in normally deformed nuclei.

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[15]	Xing Zheng , Chen Xingqu . Analysis of Identical Bands for Odd-A Superdeformed Nuclei in A ~190 Mass Region. Chinese Physics C, 1995, 19(S2): 207-213.
[16]	Chen Xingqu , Xing Zheng . Analysis of Superdeformed Bands in the Particle-Rotor Model. Chinese Physics C, 1994, 18(Z1): 95-102.
[17]	Jin Taihao , Zhao Zhengji , Zeng Jinyan . Particle-Number Conserving Calculation of the Bandhead Moments of Inertia of Identical SD Bands. Chinese Physics C, 1994, 18(3): 239-248.
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[20]	ZENG JIN-YAN . THE MOMENTS OF INERTIA OF MULTI-QUASI-PARTICLE EXCITATION BANDS AND THE BLOCKING EFFECT. Chinese Physics C, 1979, 3(1): 102-107.

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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, 1993, 17(S4): 411-421.

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, 1993, 17(S4): 411-421. shu

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Received: 1992-08-04

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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

Department of Physics, Peking University, Beijing, China

Received Date: 1992-08-04

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(l,2,3) were calculated. The configuration structures of the SD bands near the bandheads and the mechanism of the variation of bandhead moments of inertia with the pairing interaction strength G were investigated. The analysis shows that:
(1) the difference between the bandhead moments of inertia, δJ₀, is sensitive to the pairing interaction strength, but insensitive to the Nilsson parameters κ, μ and the deformation;
(2) in the 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 the SD nuclei seems much weaker than in normally deformed nuclei.