Chen Lie-Wen, Greco Vincenzo, Ko Che Ming, Li Bao-An
Cyclotron Institute and Physics Department, Texas A&M University, College Station, Texas 77843-3366, USA.
Phys Rev Lett. 2003 Apr 25;90(16):162701. doi: 10.1103/PhysRevLett.90.162701. Epub 2003 Apr 24.
Using an isospin-dependent transport model, we study the effects of nuclear symmetry energy on two-nucleon correlation functions in heavy-ion collisions induced by neutron-rich nuclei. We find that the density dependence of the nuclear symmetry energy affects significantly the nucleon emission times in these collisions, leading to larger values of two-nucleon correlation functions for a symmetry energy that has a stronger density dependence. Two-nucleon correlation functions are thus useful tools for extracting information about the nuclear symmetry energy from heavy-ion collisions.
利用同位旋依赖的输运模型，我们研究了核对称能对丰中子核引发的重离子碰撞中两核子关联函数的影响。我们发现，核对称能的密度依赖性显著影响这些碰撞中核子的发射时间，对于具有更强密度依赖性的对称能，会导致两核子关联函数的值更大。因此，两核子关联函数是从重离子碰撞中提取有关核对称能信息的有用工具。
