Symmetry energy and experimentally observed cold fragments in intermediate heavy-ion collisions

  • An attempt is made to study the symmetry energy at the time of primary fragment formation from the experimentally observed cold fragments for a neutron-rich system of 64Ni+9Be at 140 MeV/nucleon, utilizing the recent finding that the excitation energy becomes lower for more neutron-rich isotopes with a given Z value. The extracted asym/T values from the cold fragments, based on the Modified Fisher Model (MFM), are compared to those from the primary fragments of the antisymmetrized molecular dynamics (AMD) simulation and become consistent with the simulation when the I=N-Z value becomes larger, indicating that the excitation energy of these neutron-rich isotopes is indeed lower.
      PCAS:
  • 加载中
  • [1] Bao-An. Li et al, Phys. Rep., 464:113 (2008)
    [2] J. M. Lattimer and M. Prakash, Science, 23:536 (2004)
    [3] M. Huang et al, Phys. Rev. C, 81:044620 (2010)
    [4] M. Huang et al, Phys. Rev. C, 82:054602 (2010)
    [5] W. Lin et al, Phys. Rev. C, 89:021601(R) (2014)
    [6] W. Lin et al, Phys. Rev. C, 90:044603 (2014)
    [7] X. Liu et al, Phys. Rev. C, 90:014605 (2014)
    [8] A. Bonasera, F. Gulminelli, and J. Molitoris, Phys. Rep., 243:1 (1994)
    [9] A. Bonasera et al, Riv. Nuovo Cimento, 23:1 (2000)
    [10] M. E. Fisher, Rep. Prog. Phys., 30:615 (1967)
    [11] R. W. Minich et al, Phys. Lett. B, 118:458 (1982)
    [12] A. S. Hirsch et al, Nucl. Phys. A, 418:267c (1984)
    [13] Z. Chen et al, Phys. Rev. C, 81:064613 (2010)
    [14] C. W. Ma, F. Wang, Y. G. Ma and C. Jin, Phys. Rev. C, 83:064620 (2011)
    [15] C. W. Ma, J. Pu, S. S. Wang, H. L. Wei, Chin. Phys. Lett., 29:062101 (2012)
    [16] C. W. Ma, X. L. Zhao, J. Pu, S. S Wang, C.Y. Qiao, X. Feng, R. Wada, and Y. G. Ma, Phys. Rev. C, 88:014609 (2013)
    [17] S. Mallik and G. Chaudhuri, Phys. Rev. C, 87:011602R (2013)
    [18] M. R. D. Rodrigues et al, Phys. Rev. C, 88:034605 (2013)
    [19] M. Mocko et al, Phys. Rev. C, 74:054612 (2006)
    [20] A. Bonasera et al, Phys. Rev. Lett., 101:122702 (2008)
    [21] C. F. von Weizscker, Z. Phys., 96:431 (1935)
    [22] H. A. Bethe, Rev. mod. Phys., 8:82 (1936)
    [23] A. Ono and H. Horiuchi, Phys. Rev. C, 53:2958 (1996)
    [24] A. Ono, Phys. Rev. C, 59:853 (1999)
    [25] A. Ono, S. Hudan, A. Chbihi, J. D. Frankland, Phys. Rev. C, 66:014603 (2002)
    [26] X. Liu et al, Phys. Rev. C, 92:014623 (2015)
    [27] M. V. Ricciardi et al, Nucl. Phys. A, 733:299 (2004)
    [28] M. D. Agostino et al, Nucl. Phys. A, 861:47 (2011)
    [29] R. J. Charity et al, Nucl. Phys. A, 483:371 (1988)
  • 加载中

Get Citation
Su-Ya-La-Tu Zhang, Mei-Rong Huang, R. Wada, Xing-Quan Liu, Wei-Ping Lin and Jian-Song Wang. Symmetry energy and experimentally observed cold fragments in intermediate heavy-ion collisions[J]. Chinese Physics C, 2017, 41(4): 044001. doi: 10.1088/1674-1137/41/4/044001
Su-Ya-La-Tu Zhang, Mei-Rong Huang, R. Wada, Xing-Quan Liu, Wei-Ping Lin and Jian-Song Wang. Symmetry energy and experimentally observed cold fragments in intermediate heavy-ion collisions[J]. Chinese Physics C, 2017, 41(4): 044001.  doi: 10.1088/1674-1137/41/4/044001 shu
Milestone
Received: 2016-09-04
Fund

    Supported by National Natural Science Foundation of China (U1432247, 11605097), National Basic Research Program of China (973 Program, 2014CB845405), Doctoral Scientific Research Foundation of Inner Mongolia University for the Nationalities (BS365)

Article Metric

Article Views(1285)
PDF Downloads(41)
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:

Symmetry energy and experimentally observed cold fragments in intermediate heavy-ion collisions

    Corresponding author: Mei-Rong Huang,
    Corresponding author: R. Wada, huangmeirong@imun.edu.cn
  • 1.  College of Physics and Electronics Information, Inner Mongolia University for Nationalities, Tongliao 028000, China
  • 2.  Cyclotron Institute, Texas A&
  • 3.  Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000,China
Fund Project:  Supported by National Natural Science Foundation of China (U1432247, 11605097), National Basic Research Program of China (973 Program, 2014CB845405), Doctoral Scientific Research Foundation of Inner Mongolia University for the Nationalities (BS365)

Abstract: An attempt is made to study the symmetry energy at the time of primary fragment formation from the experimentally observed cold fragments for a neutron-rich system of 64Ni+9Be at 140 MeV/nucleon, utilizing the recent finding that the excitation energy becomes lower for more neutron-rich isotopes with a given Z value. The extracted asym/T values from the cold fragments, based on the Modified Fisher Model (MFM), are compared to those from the primary fragments of the antisymmetrized molecular dynamics (AMD) simulation and become consistent with the simulation when the I=N-Z value becomes larger, indicating that the excitation energy of these neutron-rich isotopes is indeed lower.

    HTML

Reference (29)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return