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

Abstract
HTML
Reference
Related

PDF

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.

[1]	GONG Lun-Xun , LIU Shu-Xin , ZHU Hong-Bo , ZENG Jin-Yan . Particle-Number Conserving Analysis for High K Multi-Quasiparticle Bands in Odd-A Deformed Nuclei ^173,175Hf. Chinese Physics C, 2002, 26(4): 371-376.
[2]	GONG Lun-Xun , LIU Shu-Xin , ZHU Hong-Bo , ZENG Jin-Yan . Particle-Number Conserving Calculation for Low-Lying Excited High-K Multi-Quasiparticle Bands in ^172,174Hf. Chinese Physics C, 2002, 26(2): 164-171.
[3]	S.B.Doma . Single Particle Schr dinger Fluid and Moments of Inertia of Deformed Nuclei. Chinese Physics C, 2002, 26(8): 836-842.
[4]	YU Lei , LIU Shu-Xin , LEI Yi-An , ZENG Jin-Yan . Microscopic Mechanism of the ω Variation in Moments of Inertia for the Series of Yrast SD Bands ^192—198Pb(1) and ¹⁹⁸Po(1). Chinese Physics C, 2001, 25(2): 129-133.
[5]	GUO Jian-You , XU Fu-Xin , RUAN Tu-Nan . Odd-Even Difference of Moment of Inertia of NuclearSuperdeformed States in A～190 Region. Chinese Physics C, 2001, 25(8): 754-758.
[6]	CHEN Yong-Jing , XU Fu-Xin . Research on Identical Bands of Superdeformed Nuclei. Chinese Physics C, 2001, 25(12): 1191-1196.
[7]	LIU ZhuHua , YANG ChunXiang . Triaxial Superdeformed Identical Bands in Rare-Earth Nuclei. Chinese Physics C, 2000, 24(6): 541-545.
[8]	FANG XiangZheng , RUAN TuNan . Description of Superdeformed Bands in ¹⁴⁸Gd in q-deformed Moment of Inertia. Chinese Physics C, 2000, 24(3): 269-274.
[9]	Shen Caiwan , Luo Wendong , Chen Yongshou . Criterion of Identical Bands and Quantization of Incremental Alignments in Superdeformed Nuclei. Chinese Physics C, 1999, 23(3): 281-288.
[10]	Liu Shuxin , Zeng Jinyan . Bandhead Moments of Inertia Systematics and Systematic Spin Assignments of Superdeformed Bands in A≈190 Region. Chinese Physics C, 1999, 23(7): 701-708.
[11]	Zhou Shangui , Zheng Chunkai , Hu Jikmin . Odd-Even Differences in Moments of Inertia of Rare Earth Nuclei from the BCS Theory. Chinese Physics C, 1998, 22(12): 1143-1150.
[12]	Zhang xinming , Zhou Huanqiang , He Jinsong . Theoretical Analysis of an U_qp(u₂) Model for the Congruent Superdeformed rotational Bands. Chinese Physics C, 1998, 22(9): 803-811.
[13]	Lei Yian , Zeng Jinyan , Zhao Enguang . Microscpic Mechanism of Identical Multi-quasiparticle Bands. Chinese Physics C, 1997, 21(3): 227-234.
[14]	Zhu Zhiyuan . Identical Bands in Superdeformed Nuclei With the Cranked Relativistic Mean Field Method. Chinese Physics C, 1996, 20(5): 448-454.
[15]	Xing Zheng , Chen Xingqu . Analysis of Identical Bands for Odd-A Superdeformed Nuclei in A～190 Mass Region. Chinese Physics C, 1995, 19(4): 354-358.
[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.

Access

Get Citation

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

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1900-01-01
Revised: 1900-01-01

Article Metric

Article Views(3034)
PDF Downloads(598)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, [email protected]

1.
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.

HTML

Reference (1)

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

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, [email protected]

Email This Article