Band head spin assignment of superdeformed bands in 86Zr

  • Two parameter expressions for rotational spectra viz. variable moment of inertia (VMI), ab formula and three parameter Harris ω2 expansion are used to assign the band head spins (I0) of four rotational superdeformed bands in 86Zr. The least-squares fitting method is employed to obtain the band head spins of these four bands in the A~80 mass region. Model parameters are extracted by fitting of intraband γ-ray energies, so as to obtain a minimum root-mean-square (rms) deviation between the calculated and the observed transition energies. The calculated transition energies are found to depend sensitively on the assigned spins. Whenever an accurate band head spin is assigned, the calculated transition energies are in agreement with the experimental transition energies. The dynamic moment of inertia is also extracted and its variation with rotational frequency is investigated. Since a better agreement of band head spin with experimental results is found using the VMI model, it is a more powerful tool than the ab formula and Harris ω2 expansion.
      PCAS:
  • 加载中
  • [1] V. M. Strutinsky, Nucl. Phys. A, 122: 1(1968)
    [2] P. J. Twin et al, Phys. Rev. Lett., 57: 811(1986)
    [3] T. L. Khoo et al, Phys. Rev. Lett., 76: 1583(1996)
    [4] K. Hauschild et al, Phys. Rev. C, 55: 2819(1997)
    [5] A. Lopez-Martin et al, Phys. Lett. B, 380: 18(1996)
    [6] M. J. Brinkman et al, Phys. Rev. C, 53: R1461(1996)
    [7] G. Hackman et al, Phys. Rev. Lett., 79: 4100(1997)
    [8] J. A. Becker et al, Phys. Rev. C, 46: 889(1992)
    [9] J. Y. Zeng et al, Phys. Rev. C, 44: R1745(1991)
    [10] R. Piepenbring and K. V. Protasov, Z. Phys. A, 345: 7(1993)
    [11] F. R. Xu and J. M. Hu, Phys. Rev. C, 49: 1449(1994)
    [12] S. G. Zhou and C. Zheng, Phys. Rev. C, 55: 2324(1997)
    [13] Z. H. Zhang et al, Phys. Rev. C, 87: 054308(2013)
    [14] S. G. Zhou et al, Nucl. Phys. A, 615: 229(1997)
    [15] M. A. Riley et al, Nucl. Phys. A, 512: 178(1990)
    [16] M. W. Drigert et al, Nucl. Phys. A, 530: 452(1991)
    [17] Y. Sun et al, Phys. Rev. Lett., 78: 2321(1997)
    [18] Y. Liang et al, Phys. Rev. C, 46: R2136(1992)
    [19] Y. Sun et al, Phys. Rev. Lett., 83: 686(1999)
    [20] Y. Sun et al, Phys. Rev. C, 52: R2844(1995)
    [21] C. Baktash et al, Phys. Rev. Lett., 74: 1946(1995)
    [22] W. Schmitz et al, Phys. Lett. B, 303: 230(1993)
    [23] H. Schnack-Petersen et al, Nucl. Phys. A, 594: 175(1995)
    [24] C. X. Yang et al, Eur. Phys. J. A, 1: 237(1998)
    [25] J. C. Bacelar et al, Nucl. Phys. A, 442: 547(1995)
    [26] D. G. Sarantites et al, Phys. Rev. C, 57: R1(1998)
    [27] A. Bohr and B. R. Mottelson, Nuclear Structure (Benjamin, New York, 1975), Vol. 2, Chap. 4
    [28] S. M. Harris, Phys. Rev. Lett., 13: 663(1964)
    [29] S. M. Harris, Phys. Rev., 138: A509(1965)
    [30] P. Holmberg and P. O. Lipas, Nucl. Phys. A, 117: 552(1968)
    [31] C. S. Wu and J. Y. Zeng, Commun. Theor. Phys. (Beijing), 8: 51(1987)
    [32] C. S. Wu et al, Phys. Rev. C, 45: 261(1992)
    [33] C. S. Wu et al, Phys. Rev. C, 45: 2507(1992)
    [34] M. A. J. Marriscotti, G. S. Goldhaber and B. Buck, Phys. Rev., 178: 1864(1969)
    [35] S. X. Liu and J. Y. Zeng, Phys. Rev. C, 58: 3266(1998)
    [36] X. L. Han and C. L. Wu, At. Data Nucl. Data Tables, 73: 43(1999)
    [37] B. Singh, R. Zywina and R. B. Firestone, Nucl. Data Sheets, 97: 241(2002)
    [38] N. Sharma, H. M. Mittal, S. Kumar and A. K. Jain, Phys. Rev. C, 87: 024322(2013)
  • 加载中

Get Citation
Anshul Dadwal and H. M. Mittal. Band head spin assignment of superdeformed bands in 86Zr[J]. Chinese Physics C, 2016, 40(11): 114103. doi: 10.1088/1674-1137/40/11/114103
Anshul Dadwal and H. M. Mittal. Band head spin assignment of superdeformed bands in 86Zr[J]. Chinese Physics C, 2016, 40(11): 114103.  doi: 10.1088/1674-1137/40/11/114103 shu
Milestone
Received: 2016-08-22
Article Metric

Article Views(1410)
PDF Downloads(77)
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, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

Band head spin assignment of superdeformed bands in 86Zr

    Corresponding author: H. M. Mittal, mittal.hm@lycos.com
  • 1. Dr. B. R. Ambedkar National Institute of Technology, Jalandhar 144011, India

Abstract: Two parameter expressions for rotational spectra viz. variable moment of inertia (VMI), ab formula and three parameter Harris ω2 expansion are used to assign the band head spins (I0) of four rotational superdeformed bands in 86Zr. The least-squares fitting method is employed to obtain the band head spins of these four bands in the A~80 mass region. Model parameters are extracted by fitting of intraband γ-ray energies, so as to obtain a minimum root-mean-square (rms) deviation between the calculated and the observed transition energies. The calculated transition energies are found to depend sensitively on the assigned spins. Whenever an accurate band head spin is assigned, the calculated transition energies are in agreement with the experimental transition energies. The dynamic moment of inertia is also extracted and its variation with rotational frequency is investigated. Since a better agreement of band head spin with experimental results is found using the VMI model, it is a more powerful tool than the ab formula and Harris ω2 expansion.

    HTML

Reference (38)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return