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arXiv · 1404.7217

Normal or abnormal isospin-fractionation as a qualitative probe of nuclear symmetry energy at supradensities

Wen-Mei Guo·Gao-Chan Yong·Yongjia Wang·Qingfeng Li·Hongfei Zhang·Wei Zuo
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Abstract

Within two different frameworks of isospin-dependent transport model, effect of nuclear symmetry energy at supradensities on the isospin-fractionation (IsoF) was investigated. With positive/negative symmetry potential at supradensities (i.e., values of symmetry energy increase/decrease with density above saturation density), for energetic nucleons, the value of neutron to proton ratio of free nucleons is larger/smaller than that of bound nucleon fragments. Compared with extensively studied quantitative observables of nuclear symmetry energy, the normal or abnormal isospin-fractionation of energetic nucleons can be a qualitative probe of nuclear symmetry energy at supradensities.

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Wen-Mei Guo, Gao-Chan Yong, Yongjia Wang, Qingfeng Li, Hongfei Zhang, Wei Zuo. 2014-10-07. Normal or abnormal isospin-fractionation as a qualitative probe of nuclear symmetry energy at supradensities. https://doi.org/10.1016/j.physletb.2014.10.011

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