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采用同位旋依赖的量子分子动力学模型,研究了反应96Ru+96Ru,96Ru+96Zr,96Zr+96Ri和96Zr+96Zr在入射能量为400AMeV时的出射粒子和块的同位旋分布。发现在中能反应中构造的中子-质子差的快度分布对探测平均场的对称势能部分是敏感的。对出射的核子、轻带电粒子和中等质量碎片的N/Z比的研究表明,对称势能起到使中等质量碎片更加同位旋对称和出射的核子更加丰中子的作用。对出射的核子、轻带电粒子和中等质量碎片的同位旋分布的时间演化也作了研究并且发现中子的散布更快,最终三者的同位旋分布是一种动态平衡,这种
The isospin-like distributions of the exiting particles and the bulk of the reactions 96Ru + 96Ru, 96Ru + 96Zr, 96Zr + 96Ri and 96Zr + 96Zr at an incident energy of 400 AMeV were studied using isospin-dependent quantum molecular dynamics models. It is found that the fast distribution of neutron-proton difference constructed in the neutron reaction is sensitive to the symmetrical potential of the mean field. Studies of the N / Z ratio of exiting nuclei, light-charged particles, and medium-quality fragments have shown that the symmetrical potential functions as a more neutron-enriched nucleus that causes more uniform isospin symmetry and exits of medium-quality fragments. The temporal evolution of the isospin distribution of exiting nuclei, light charged particles and medium-quality fragments has also been studied and it has been found that the distribution of neutrons is faster and the isospin distribution of the final three is a kind of dynamic equilibrium.