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 Gwere investigated. The analysis shows that:
(1) the difference between the bandhead moments of inertia, δ J ₀, is sensitive to the pairing interaction strength, but insensitive to the Nilsson parameters κ, μand the deformation;
(2) in the A~190 region, the pairing interaction still plays an important role and the δJ ₀is 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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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) bands¹⁹²Hg and¹⁹⁴Hg(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 strengthGwere 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 parametersκ, μand the deformation;
(2) in the A~190 region, the pairing interaction still plays an important role and theδJ₀is mainly attributed to the blocking effect;
(3) the pairing interaction strength in the SD nuclei seems much weaker than in normally deformed nuclei.