Impact Parameter Dependence of the Double Neutron/Proton Ratio of Nucleon Emissions in Isotopic Reaction Systems |
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| Authors: | ZHANG Xun-Chao LI Bao-An CHEN Lie-Wen YONG Gao-Chan |
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| Affiliation: | Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000Graduate School of Chinese Academy of Sciences, Beijing 100049Department of Physics, Texas A&M University-Commerce, Commerce, Texas 75429-3011, USAInstitute of Theoretical Physics, Shanghai Jiao Tong University, Shanghai 200240Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000 |
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| Abstract: | Within the transport model IBUU04, we investigate the double neutron/proton ratio of free nucleons taken from two reaction systems using two Sn isotopes at a beam energy of 50MeV/nucleon and with impact parameters 2fm, 4fm and 8fm, respectively. It is found that the double neutron/proton ratio from peripheral collisions is more sensitive to the density dependence of the symmetry energy than those from mid-central and central collisions. |
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| Keywords: | 25.70.-z 24.10.Lx |
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