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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.
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    [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)

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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
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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)

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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, 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.

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