论文标题
簇相关对50 MeV/核的12C + 12C片段发射的影响
Effects of cluster correlations on fragment emission in 12C + 12C at 50 MeV/nucleon
论文作者
论文摘要
The effects of cluster correlations have been studied in the $^{12}$C + $^{12}$C reaction at 50 MeV/nucleon, using three AMD models, the AMD (AMD/D) without any additional cluster correlations, AMD/D-COALS with nucleon correlations based on a coalescence prescription for light cluster formations with $A\leq4$ and AMD-Cluster with an extended cluster在两核子碰撞过程中的相关性和对中间片段形成的特殊处理方式，$ \ le 9 $。已经模拟了片段的角分布和能量光谱，并将其与可用的实验数据进行了比较。发现群集相关性发挥了至关重要的作用来描述带电颗粒（LCP）和中间质量片段（IMF）的生产，此处研究的AMD群集提供了一致的实验数据的总体复制。还表明，除了在AMD阶段的动力学生产外，次级衰减过程的显着影响还涉及片段产生。讨论了中间能量重离子碰撞所涉及的详细的LCP和IMF生产机制。
The effects of cluster correlations have been studied in the $^{12}$C + $^{12}$C reaction at 50 MeV/nucleon, using three AMD models, the AMD (AMD/D) without any additional cluster correlations, AMD/D-COALS with nucleon correlations based on a coalescence prescription for light cluster formations with $A\leq4$ and AMD-Cluster with an extended cluster correlation in two-nucleon collision processes and a special treatment for intermediate fragment formation with A $\le 9$. The angular distributions and energy spectra of fragments have been simulated and compared with the available experimental data. It is found that the cluster correlations take a crucial role to describe the productions of light charged particles (LCPs) and intermediate mass fragments (IMFs), and the AMD-cluster studied here provides a consistent overall reproduction of the experimental data. It is also shown that the significant effects of the secondary decay processes are involved for the fragment production besides the dynamical productions in the AMD stage. Detailed LCP and IMF production mechanisms involved in the intermediate energy heavy ion collisions are discussed.
