标题： 同位旋不对称性和介质修正对平衡能量的影响 显示英文标题

标题： Effects of Isospin Asymmetry and In-Medium Corrections on Balance Energy

摘要： 研究了同位旋不对称性以及核子碰撞截面的介质修正对平衡能量的影响。用BUU模型结合具有同位旋相关平均场的中能重离子碰撞来计算58Fe+58Fe和58Ni+58Ni在不同碰撞参数范围内的平衡能量。我们发现能够重现平衡能量对碰撞参数的依赖关系，以及平衡能量随同位旋不对称性变化时的符号（但不是大小）偏移。 显示英文摘要

摘要： The effects of an isospin asymmetry and in-medium corrections to the nucleon collision cross section on the balance energy are explored. The BUU model for intermediate energy heavy-ion collisions is used with isospin-dependent mean fields to calculate the balance energies of 58Fe + 58Fe and 58Ni + 58Ni for a range of impact parameters. We find that we are able to reproduce the impact parameter dependence of the balance energy, and the sign (but not the magnitude) of the shift in balance balance energy as a function of isospin asymmetry.