中文摘要：

核子-核子碰撞截面（σNN）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（σpp）、中子-中子碰撞截面（σnn）和中子-质子碰撞截面（σnp）,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12↑C＋12↑C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12↑C完全反应截面的影响。

英文摘要：

The nucleus-nucleus cross sections（σNN）include the proton-proton cross section,neutron-neutron cross section,and neutron-proton cross section.σNN change with the variations of the incident energies and the densities.Some parameterizations of σNN 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 12↑C＋12↑C at different energies,the effect of different σNN parameterizations in the reaction cross sections of 12↑are studied.