Dynamical nucleus-nucleus potential and incompressibility of nuclear matter
Dynamical nucleus-nucleus potential and incompressibility of nuclear matter
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动态核-核势和核物质的不可压缩性
DOI：
10.1103/physrevc.85.034601
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发表时间：
2012-03
影响因子：
3.1
通讯作者：
O. N. Ghodsi
中科院分区：
文献类型：
--
作者：
V. Zanganeh;Ning Wang;O. N. Ghodsi
利用改进的量子分子动力学（ImQMD）模型，研究了不同核物质不可压缩系数参数组下某些核聚变反应的动态核-核势。提出了两组新的ImQMD模型参数SKP*和IQ3，不可压缩系数分别为195和225 MeV。可以较好地再现多重碎片化过程中${}^{16}$O+${}^{208}$Pb的聚变激发函数以及Ca+Ca和Au+Au碎片的电荷分布。同时，研究了核物质不可压缩性和核子-核子相互作用范围对核-核动态势的影响。
The dynamical nucleus-nucleus potentials for some fusion reactions are investigated by using the improved quantum molecular-dynamics (ImQMD) model with different sets of parameters in which the corresponding incompressibility coefficient of nuclear matter is different. Two new sets of parameters SKP* and IQ3 for the ImQMD model are proposed with the incompressibility coefficient of 195 and 225 MeV, respectively. The measured fusion excitation function for ${}^{16}$O+${}^{208}$Pb and the charge distribution of fragments for Ca+Ca and Au+Au in multifragmentation process can be reasonably well reproduced. Simultaneously, the influence of the nuclear matter incompressibility and the range of nucleon-nucleon interaction on the nucleus-nucleus dynamic potential is investigated.