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

[1]

P.J.Twin,Nucl.Phys.,A520（1990）,17c.;A522（1991）13c,以及该文所引文献。[2] S.bery,Nucl.Phys.,A520（1990）35c,以及该文所引文献。[3] T.Byrskit et al,Phys. Rev.lett,64（1990）1650.[4] F.S.Stephens et al.,Phys.Rev.Lett.,64（1990）2623;65（1990）301.[5] A.Bohr,I.Hamamoto and B.R.Mottelson,Phys,Scripta,26（1987）267.[6] C.L.Wu,D.H.Feng and M.K.Guidry,Phys Rev.Lett.,166（1991）1377.[7] R.Wyss and S.Pilot,Phys.Rev.,C44（1991）R601.[8] 邢正，陈星蕖，高能物理与核物理，15（1991）1020.[9] J.Y·Zeng,J.Meng,C.S.Wu,E.G.Zhao,Z.Xiny,X.Q.Chen,Phys Rev.,C44（1991）R1745.[10] C.S.Wu,J.Y.Zeng,Z.Xing,X.Q.Chen and J.Meng,Phys.Rev.,C45（1992）261.[11] C.S.Wu,L.Chen,C.Z.Lin and J.Y.Zeng,Phys.Rev.,C45（1992）2507.[12] H.X.Huang,C.S.Wu and J.Y.Zeng:Phys.Rev.,C39（1989）1617.[13] 曾谨言，雷奕安，中国科学，23（1993）,371.[14] J.Y.Zeng,Y.A.Lei and C.S.Wu,Chin.J.Nucl.Phys.,15（1993）152.[15] P.J.Rowe,Nuclear Colletive Motion,（1970,Methuen,London）,p.194.[16] J.Y.Zeng and T.S.Cheng,Nucl.Phys.,A405（1983）1.[17] J.Y.Zeng;et al,Nucl.Phys,A451（1983）49;A414（1984）253;A421（1984）125[18] C.S.WubandbJ.Y.Zeng,Phys.Rev.,C40（1989）998;C41（1990）1822.[19] C. S. Wu and J. Y. Zeng, Phys. Rev., C39(1989) 666.[20] J. Y. Zeng, C. S. Wu, L. Cheng and C. Z. Lin, Phys. Rev., C41 (1990) 2911.[21] M. A. Riley, et al., Nucl. Phys., A512 (1990) 178.[22] W. Satula, Nucl. Phys., A529(1991) 289.[23] M. Meyer, et al., Phys. Rev., C45 (1992) 233.[24] T. Bengtsson and I. Ragnarsson, Nucl. Phys., A436 (1985) 14.[25] 赵正姬，金太浩,高能物理与核物理,16(1992) 754.

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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.
[19]	CHEN Xin-Yi , HU Ji-Min . CALCULATION OF THE EFFECTIVE MOMENT OF INERTIA OF FISSIONING NUCLEI AT SADDLE POINT. Chinese Physics C, 1989, 13(4): 380-383.
[20]	ZHANG MEI , XUE YU-YI , . PNC METHOD FOR TREATING THE PAIRING CORRELATION IN SPHERICAL NUCLEUS. Chinese Physics C, 1981, 5(3): 390-392.

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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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