非对称核物质状态方程及核子-核子相互作用的研究是当前国际上研究热点，它不仅对核物理本身，而且对核天体物理的研究都具有重要的意义。利用中高能重离子核反应研究核子-核子相互作用及非对称核物质状态方程是重要的手段。目前国际上中高能核反应实验数据缺乏，许多新的物理需要去探索。本项目拟基于兰州重离子加速器冷却储存环（HIRFL-CSR）开展中高能轻核诱发核反应研究，主要研究内容包括：“中高能12C+12C弹性散射研究原子核中三体力效应”、“中高能12C碎裂反应粒子产生机制研究”。通过实验测量与微观理论模型计算相结合，对国际上广泛关注的原子核中三体力效应、介质效应和光学势排斥本质、核介质中核子-核子相互作用截面以及重离子碰撞中核子费米运动、集团关联和三体力效应等对粒子产生机制的影响进行深入研究。

The investigations of the equation of state (EOS) of asymmetric nuclear matter and the nucleon-nucleon interaction are frontier and hot topics of nuclear physics in the world because of its importance not only for nuclear physics but also for nuclear astrophysics. Heavy-ion reactions at intermediate and high energies provide an important way of studying the nucleon-nucleon interaction and the equation of state of asymmetric nuclear matter. At present, the experimental nuclear data at intermediate and high energies are very scarce in the world. There are many new physics need to be explored. In this proposal, the studies of light nuclei induced reactions at intermediate and high energies will be carried out based on the Cooling Storage Ring of Heavy Ion Research Facility in Lanzhou (HIRFL-CSR). Our research will focus on “The effect of three-body force in 12C +12C elastic scattering at intermediate and high energies” and “The mechanism of particle production in 12C fragmentation at intermediate and high energies”. By combination of experimental measurements and theoretical calculation methods, the three-body effect，the medium effect and the repulsive nature of optical potential for nucleon-nucleon interaction in nuclear system, in-medium nucleon-nucleon interaction cross sections, the effects of fermi motion of nucleon, cluster correlation and three-body force on the mechanism of particle production in heavy ion collisions will be further studied.