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

LI Cheng; TIAN Jun-Long; QIN Yu-Jiao; LI Jing-Jing; WANG Ning

doi:10.1088/1674-1137/37/11/114101

Chinese Physics C> 2013, Vol. 37> Issue(11) : 114101 DOI: 10.1088/1674-1137/37/11/114101

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

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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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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

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Received: 2013-01-04
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沈阳化工大学材料科学与工程学院沈阳 110142

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

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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,

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