Determination of the nucleon-nucleon interaction in the ImQMD model by nuclear reactions at the Fermi energy region

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LI Cheng, TIAN Jun-Long, QIN Yu-Jiao, LI Jing-Jing and WANG Ning. Determination of the nucleon-nucleon interaction in the ImQMD model by nuclear reactions at the Fermi energy region[J]. Chinese Physics C, 2013, 37(11): 114101. doi: 10.1088/1674-1137/37/11/114101
LI Cheng, TIAN Jun-Long, QIN Yu-Jiao, LI Jing-Jing and WANG Ning. Determination of the nucleon-nucleon interaction in the ImQMD model by nuclear reactions at the Fermi energy region[J]. Chinese Physics C, 2013, 37(11): 114101.  doi: 10.1088/1674-1137/37/11/114101 shu
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Received: 2013-01-04
Revised: 1900-01-01
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Determination of the nucleon-nucleon interaction in the ImQMD model by nuclear reactions at the Fermi energy region

    Corresponding author: LI Cheng,
    Corresponding author: TIAN Jun-Long,
    Corresponding author: WANG Ning,

Abstract: The nucleon-nucleon interaction is investigated by using the improved quantum molecular dynamic (ImQMD) model with three sets of parameters IQ1,IQ2 and IQ3,in which the corresponding incompressibility coefficients of nuclear matter are different. The charge distributions of fragments are calculated for various reaction systems at different incident energies. The parameters strongly affect the charge distributions and the fragment multiplicity spectrum below the threshold energy of nuclear multifragmentation. The fragment multiplicity spectrum for 238U+197Au at 15 A MeV and the charge distributions for 129Xe+120Sn at 32 and 45 A MeV,and 197Au+197Au at 35 A MeV are reproduced by the ImQMD model with the set of parameter IQ3. It is found that: 1) The charge distribution of the fragments and the fragment multiplicity spectrum are good observables for testing the model and the parameters. 2) The Fermi energy region is a sensitive energy region for studying nucleon-nucleon interaction.

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