通过费米能区重离子碰撞产额分布来研究16O原子核的团簇结构

近几年来,原子核核内的α团簇结构引起了人们的广泛关注.本工作的目的是讨论在费米能区下重离子碰撞的碎片产额分布是否可以作为研究轻核中α团簇结构的工具.本文基于扩展的量子分子动力学输运模型(EMQD)模拟了16O具有4种不同的初始化α构型(长链型、风筝型、四方型以及正四面体型)的16O+16O反应,通过观察碎片产额多重数分...

Probing Clustering Configurations of 16O by the Yield Distribution in Heavy Ion Collisions at Fermi Energy

In recent years, the cluster structure in nuclei has attracted a lot of attention. The goal of this work is to investigate the yield distribution of heavy ion collisions at Fermi energy and evaluate the $\alpha$ cluster configurations in light nuclei. The 16O+16O reactions with four different initialization $\alpha$ configurations (long chain, kite, square, tetrahedron)are simulated based on the Extended Quantum Molecular Dynamics (EQMD) transport model. The nuclei with different structures are investigated by observation of the multiplicity distribution of yields in nuclear reactions. It is found that the yields of free protons and 4He were affected by different cluster configurations, which indicates that 4He/proton can be used as a characterization of cluster structure. In addition, the $\alpha$ cluster configuration information of 16O can be extracted from the outgoing $\theta$ and $\phi$ and the kinetic energy spectrum of of free protons and 4He.