论文标题
挤压区域中光核的各向异性流和核修饰因子的核定量表
Nucleon-number scalings of anisotropic flows and nuclear modification factor for light nuclei in the squeeze-out region
论文作者
论文摘要
测试了0.4 $ a $ gev $ ^{197} au + ^collisions，在0.4 $ a $ gev $ ^{197} au $ collisions中，测试了有向流量$ v_1 $和椭圆流（$ v_ {2} $）和核修饰因子（$ r_ {cp} $）的核子（$ v_ {2} $）的核（nn）缩放量表以及核修饰因子（$ r_ {cp} $）的测试。核子核子横截面在依赖Isospin依赖性量子分子动力学（IQMD）模型的框架中。在该能量结构域中，挤压物体可以很好地描述光核的发射。结果显示了Flow参数的不错的NN缩放行为$ v_ {1} $，$ v_ {2} $和$ {r_ {cp}} $。这些结果表明，核子合并机制是导致在中级能量处重离子碰撞中挤压区域中上述物理可观察力的核子数缩放。
The number of nucleon (NN) scaling of the directed flow $v_1$ and elliptic flow ($v_{2}$) as well as the nuclear modification factor ($R_{cp}$) are tested for light nuclei which are produced in 0.4$A$ GeV $^{197}Au + ^{197}Au$ collisions at different impact parameters with two different in-medium nucleon-nucleon cross sections in the framework of an isospin-dependent quantum molecular dynamics (IQMD) model. In that energy domain, the emission of light nuclei can be well described by the squeeze-out phenonomenon. The results show a nice NN scaling behavior for flow parameters $v_{1}$, $v_{2}$ and ${R_{cp}}$. These results demonstrate that the nucleon coalescence mechanism is responsible for nucleon-number scaling of above physical observables in squeeze-out region in heavy-ion collisions at intermediate energy.
