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 ›› 2013, Vol. 24 ›› Issue (5): 050505 doi: 10.13538/j.1001-8042/nst.2013.05.005

Special Issue: Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2012)

• Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2012) • Previous Articles     Next Articles

Density isomer of nuclear matter in an equivalent mass approach

GAO Li1,2   LU Zhenyan1   PENG Guangxiong1,3,*   

  1. 1College of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
    2Department of Physics, Shandong University of Technology, Zibo 255049, China
    3Theoretical Physics Center for Science Facilities, Institute of High Energy Physics, Beijing 100049, China
  • Received:2013-06-30
  • Contact: PENG Guangxiong E-mail:gxpeng@ucas.ac.cn
  • Supported by:

    Supported by National Natural Science Foundation of China (NSFC) Projects (Nos.11135011 and 11045006) and the key project from Chinese Academy of Sciences (No.12A0A0012)

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GAO Li, LU Zhenyan, PENG Guangxiong . Density isomer of nuclear matter in an equivalent mass approach.Nuclear Science and Techniques, 2013, 24(5): 050505     doi: 10.13538/j.1001-8042/nst.2013.05.005

Abstract:

The equation of state of symmetric nuclear matter is studied with an equivalent mass model. The equivalent mass of a nucleon has been expanded to order 4 in density. We first determine the first-order expansion coefficient in the quantum hadron dynamics, then calculate the coefficients of the second to fourth order for the given binding energy and incompressibility at the normal nuclear saturation density. It is found that there appears a density isomeric state if the incompressibility is smaller than a critical value. The model dependence of the conclusion has also been checked by varying the first-order coefficient.

Key words: Density isomer, Equivalent mass, Nuclear equation of state