关键词: 
核子-核子碰撞截面参数化公式 /
介质中的核子-核子碰撞截面 /
核反应模

摘要: 核子-核子碰撞截面(σ_NN)是描述原子核反应模型中的重要物理量。 核子-核子碰撞截面包括质子-质子碰撞截面（σ_pp）、中子-中子碰撞截面（σ_NN）和中子质子碰撞截面（σ_np）， 它们随着核子能量与核物质密度的改变而变化。人们在目前研究中提出了多种核子-核子碰撞截面关于能量和核物质密度的参数化公式，通过计算¹²C+¹²C的完全反应截面，比较了不同入射能量下使用各种核子-核子碰撞截面参数化公式对¹²C完全反应截面的影响。 The nucleus-nucleus cross sections(σ_NN) include the proton-proton cross section， neutron-neutron cross section， and neutron-proton cross section. σ_NN change with the variations of the incident energies and the densities. Some parameterizations of σ_NNas a function of incident energy and density have been proposed in the theoretical and experimental study of nuclear reactions. Through the calculation of reaction cross sections of ¹²C+¹²C at different energies, the effect of different σ_NN parameterizations in the reaction cross sections of 12 are studied.
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