Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2018 Impact factor 0.961

Nuclear Science and Techniques ›› 2014, Vol. 25 ›› Issue (3): 030501 doi: 10.13538/j.1001-8042/nst.25.030501

• NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH • Previous Articles     Next Articles

Systematic study of dynamical dipole mode via the isospin-dependent Boltzmann-Uehling-Uhlenbeck model

YE Shao-Qiang, CAI Xiang-Zhou, FANG De-Qing, MA Yu-Gang, SHEN Wen-Qing   

  1. 1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2University of Chinese Academy of Sciences, Beijing 100039, China
  • Contact: MA Yu-Gang E-mail:ygma@sinap.ac.cn
  • Supported by:

    Supported partially by the National Natural Science Foundation of China projects (Nos. 11220101005, 11035009, 11175231 and 10979074), the Major State Basic Research Development Program in China ( No. 2013CB834405), and the Knowledge Innovation Project of the Chinese Academy of Sciences (No. KJCX2-EW-N01)

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YE Shao-Qiang, CAI Xiang-Zhou, FANG De-Qing, MA Yu-Gang, SHEN Wen-Qing . Systematic study of dynamical dipole mode via the isospin-dependent Boltzmann-Uehling-Uhlenbeck model.Nuclear Science and Techniques, 2014, 25(3): 030501     doi: 10.13538/j.1001-8042/nst.25.030501

Abstract:

Dynamical dipole mode in heavy-ion collisions has been studied by using an isospin-dependent Boltzmann- Uehling-Uhlenbeck (IBUU) model. We investigate the dependence of centroid energy and strength of the γ spectrum on beam energy, N/Z ratio and mass asymmetry. The calculated yield and angular distribution of the γ-ray produced by dynamical dipole emission are consistent with the experimental data. The results show that the detailed study of dynamical dipole radiation can provide information on the isospin evolution of chargeasymmetric heavy-ion collisions around the normal nuclear density.

Key words: Heavy-ion collision, IBUU, Dynamical dipole mode