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用IQMD模型分析了由96 Ru和96 Zr构成的质量对称、同位旋不对称的一组中能核反应 ,寻求对对称势强度的敏感量和研究反应最终是否达到平衡的问题 .研究表明中子 -质子差快度分布在弹或靶快度区对对称势强度敏感 ,且越丰中子的核系统越敏感 .中子 -质子差快度分布还表明能量为 40 0MeV/u时达到的平衡程度要比 1 0 0MeV/u时的高 .出射的核子、轻带电粒子和中等质量碎片的N/Z显示IMF的出射有记忆效应 .随着入射能量由 1 0 0MeV/u增加到 40 0MeV/u ,IMF的N/Z有明显下降 ,这是由于随入射能量增加使IMF中同位素的分布发生变化所致 .
The IQMD model is used to analyze the mass symmetry, isospin asymmetry, a group of intermediate nuclear reactions consisting of 96 Ru and 96 Zr, finding the sensitive amount of symmetrical potential strength and whether the reaction is eventually balanced. The results show that neutron- The fast distribution of proton difference is sensitive to the intensity of symmetry potential in the projectile or target fast zone, and the more sensitive the neutron nuclear system is, the neutron-proton difference fast distribution also indicates the degree of equilibrium reached when the energy is 40 0 MeV / u Is higher than that at 1 0 0 MeV / u.The N / Z of exiting nuclei, light charged particles and medium-quality fragments shows that there is a memory effect in the exiting IMF, with the incident energy increasing from 100 MeV / u to 40 0 MeV / u , The N / Z of IMF decreased obviously due to the change of isotope distribution in the IMF with the increase of incident energy.