Impact factor of Chinese Physics C is 3.6 in 2023 Impact factor of Chinese Physics C is 3.6 in 2022 2021 Impact Factor 2.944
Advanced Search
Chinese Physics C > 2018, Vol. 42 > Issue(12): 124106 DOI: 10.1088/1674-1137/42/12/124106

Isospin effect in peripheral heavy-ion collisions at Fermi energies

  • 1.

    Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

  • 2.

    University of Chinese Academy of Sciences, Beijing 100190, China

  • 3.

    School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510640, China

  • The isospin effect in peripheral heavy-ion collisions was thoroughly investigated within the framework of the Lanzhou quantum molecular dynamics (LQMD) transport model. A coalescence approach was used to recognize the primary fragments formed in nucleus-nucleus collisions. The secondary decay process of these fragments was described using the statistical code GEMINI. The production mechanism and isospin effect of the projectile-like and target-like fragments were analyzed using the combined approach. It was found that the isospin migration from the high-isospin density to the low-density matter occurred in the neutron-rich nuclear reactions, i.e., 48Ca+ 208Pb, 86Kr+ 48Ca/ 208Pb/ 124Sn, 136Xe+ 208Pb, 124Sn+ 124Sn, and 136Xe+ 136Xe. A hard symmetry energy was available for creating the neutron-rich fragments, particularly in the medium-mass region. The isospin effect of the neutron-to-proton (n/p) ratio of the complex fragments was reduced when the secondary decay process was included. However, a soft symmetry energy enhanced the n/p ratio of the light particles, particularly at kinetic energies greater than 15 MeV/nucleon.
      PCAS:
  • 加载中

  • References

    [1] M. G. Itkis, E. Vardaci, I. M. Itkis et al, Nucl. Phys. A, 944:204(2015)
    [2] V. Zagrebaev and W. Greiner, J. Phys. G, 34:1(2007)
    [3] Z. Q. Feng, G. M. Jin, J. Q. Li, and W. Scheid, Nucl. Phys. A, 816:33(2009)
    [4] Y. Aritomo, K. Hagino, K. Nishio, and S. Chiba, Phys. Rev. C, 85:044614(2012)
    [5] P. Chomaz, M. Colonna, and J. Randrup, Phys. Rep., 389:263(2004)
    [6] M. Colonna, M. Di Toro, A. Guarnera, V. Latora, and A. Smerzi, Phys. Lett. B, 307:273(1993); M. Colonna, M. Di Toro, and A. Guarnera, Nucl. Phys. A, 580:312(1994)
    [7] J. Pochatlzalla et al, Phys. Rev. Lett., 75:1040(1995)
    [8] Y. G. Ma, Phys. Rev. Lett., 83:3617(1999)
    [9] Y. Zhang, Z. Li, Phys. Rev. C, 71:024604(2005)
    [10] X. G. Deng, Y. G. Ma, Nucl. Sci. Tech., 28:82(2017)
    [11] N. B. Zhang, B. J. Cai, B. A. Li et al, Nucl. Sci. Tech., 28:181(2017)
    [12] V. Baran, M. Colonna, V. Greco, M. Di Toro, Phys. Rep., 410:335(2005)
    [13] L. W. Chen, C. M. Ko, B. A. Li, Phys. Rev. Lett., 94:032701(2005)
    [14] B. A. Li, L. W. Chen, C. M. Ko, Phys. Rep., 464:113(2008)
    [15] Z. Y. Sun, M. B. Tsang, W. G. Lynch et al, Phys. Rev. C, 82:051603(R) (2010)
    [16] Z. Kohley et al, Phys. Rev. C, 83:044601(2011)
    [17] R. Ogul, N. Buyukcizmeci, A. Ergunet al, Nucl. Sci. Tech., 28:18(2017)
    [18] E. De Filippo, A. Pagano, P. Russotto et al, Phys. Rev. C, 86:014610(2012)
    [19] E. De Filippo and A. Pagano, Eur. Phys. J. A, 50:32(2014); P. Russotto et al, Phys. Rev. C, 91:014610(2015)
    [20] Z. Q. Feng, Phys. Rev. C, 94:014609(2016)
    [21] Z. Q. Feng, Phys. Rev. C, 84:024610(2011)
    [22] Z. Q. Feng and H. Lenske, Phys. Rev. C 89, 044617(2014); Z. Q. Feng, 93:041601(R) (2016)
    [23] Z. Q. Feng, W. J. Xie, P. H. Chen, J. Chen, and G. M. Jin, Phys. Rev. C, 92:044604(2015)
    [24] Z. Q. Feng, Nucl. Sci. Tech., 29:40(2018); J. Chen, Z. Q. Feng, and J. S. Wang, Nucl. Sci. Tech., 27:73(2016)
    [25] Y. X. Zhang et al, Phys. Rev. C, 97:034625(2018)
    [26] Z. Q. Feng and G. M. Jin, Chin. Phys. Lett., 26:062501(2009)
    [27] R. J. Charity, M. A. McMahan, G. J. Wozniak et al, Nucl. Phys. A, 483:371(1988)
    [28] Y. F. Guo, P. H. Chen, F. Niu et al, Chin. Phys. C, 41:104104(2017)
    [29] D. D. S. Coupland, M. Youngs, Z. Chajecki et al, Phys. Rev. C, 94:011601(R) (2016)
    [30] Y. Zhang, D. D. S. Coupland, P. Danielewicz et al, Phys. Rev. C, 85:024602(2012)
    [31] T. I. Mikhailova, B. Erdemchimeg, A. G. Artyukh, G. Kaminski, Yu. M. Sereda, M. Colonna, M. Di Toro, and H. H. Wolter, Bull. Russ. Aca. Sci. (Physics), 75:1511(2011) DOI:10.3103/S1062873811110190
    [32] B. Gnoffo et al, Journal of Physics:Conf. Series, 863:012062(2017)
    [33] H. Yao and N. Wang, Phys. Rev. C, 95:014607(2017)

  • Access

    加载中

Get Citation
Ya-Fei Guo, Peng-Hui Chen, Fei Niu and Zhao-Qing Feng. Isospin effect in peripheral heavy-ion collisions at Fermi energies[J]. Chinese Physics C, 2018, 42(12): 124106. doi: 10.1088/1674-1137/42/12/124106
Ya-Fei Guo, Peng-Hui Chen, Fei Niu and Zhao-Qing Feng. Isospin effect in peripheral heavy-ion collisions at Fermi energies[J]. Chinese Physics C, 2018, 42(12): 124106. doi:10.1088/1674-1137/42/12/124106 shu
Milestone
Received: 2018-07-22
Revised: 2018-09-20
Fund

    Supported by the National Natural Science Foundation of China (11722546, 11675226) and the Talent Program of South China University of Technology (K5180470)

Article Metric

Article Views(3794)
PDF Downloads(25)
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:

    Isospin effect in peripheral heavy-ion collisions at Fermi energies

      Corresponding author:Zhao-Qing Feng,
    • 1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
    • 2. University of Chinese Academy of Sciences, Beijing 100190, China
    • 3. School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510640, China
    • Received Date:2018-07-22
    • Accepted Date:2018-09-20
    • Available Online:2018-12-05
    Fund Project:Supported by the National Natural Science Foundation of China (11722546, 11675226) and the Talent Program of South China University of Technology (K5180470)

      Abstract:The isospin effect in peripheral heavy-ion collisions was thoroughly investigated within the framework of the Lanzhou quantum molecular dynamics (LQMD) transport model. A coalescence approach was used to recognize the primary fragments formed in nucleus-nucleus collisions. The secondary decay process of these fragments was described using the statistical code GEMINI. The production mechanism and isospin effect of the projectile-like and target-like fragments were analyzed using the combined approach. It was found that the isospin migration from the high-isospin density to the low-density matter occurred in the neutron-rich nuclear reactions, i.e.,48Ca+208Pb,86Kr+48Ca/208Pb/124Sn,136Xe+208Pb,124Sn+124Sn, and136Xe+136Xe. A hard symmetry energy was available for creating the neutron-rich fragments, particularly in the medium-mass region. The isospin effect of the neutron-to-proton (n/p) ratio of the complex fragments was reduced when the secondary decay process was included. However, a soft symmetry energy enhanced the n/p ratio of the light particles, particularly at kinetic energies greater than 15 MeV/nucleon.

        HTML

      Reference (33)

      目录

      Link
      IOPScience
      SCOAP3
      arXiv
      Chinese Physical Society
      Journal information
      Introduction
      Editorial Board
      Others
      Subscribe
      Contact us
      QQ: 1307685413
      Tel: +86-010-88235947
      Fax: +86-010-88233126
      E-mail: cpc@ihep.ac.cn

      • CPC Website

      • IOP Website

      • CPC WeChat

      Copyright © Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China 京ICP备05002789号-1

      Supported by:Beijing Renhe Information Technology Co. Ltd E-mail:info@rhhz.net

      /

        Return
        Return
          Baidu
          map