论文标题
在微观时间依赖性相对论密度理论中线性链α簇的动力学
Dynamics of the linear-chain alpha cluster in microscopic time-dependent relativistic density functional theory
论文作者
论文摘要
已开发并应用了3D晶格空间中的时间依赖性协变量功能理论，以研究反应中碳同位素的线性链簇状态的显微动力学$^4 $ he $+^8 $ be and $^4 $ he $ he $+he $+^{10} $是没有任何对称假设的。通过检查密度分布及其时间的演变，分析了线性链状态的结构和动力学，并揭示了簇的准膜振荡。对于$^4 $ HE $+^8 $，线性链状态演变为三角形配置，然后变为更紧凑的形状。相比之下，对于$^4 $ he $+^{10} $，由于价中子的动态同变效应，线性链状态的寿命要延长得多，从而减慢了群集的纵向振荡并持久线性链状态。也已经说明了线性链生存时间和动态同相对影响参数的依赖性。
The time-dependent covariant density functional theory in 3D lattice space has been developed and applied to investigate the microscopic dynamics of the linear-chain cluster states for carbon isotopes in the reactions $^4$He$+^8$Be and $^4$He$+^{10}$Be without any symmetry assumptions. By examining the density distribution and its time evolutions, the structure and dynamics of the linear-chain states are analyzed, and the quasiperiodic oscillations of the clusters are revealed. For $^4$He$+^8$Be, the linear-chain states evolve to a triangular configuration and then to a more compact shape. In contrast, for $^4$He$+^{10}$Be, the lifetime of the linear-chain states is much more prolonged due to the dynamical isospin effects by the valence neutrons which slow down the longitudinal oscillations of the clusters and persist the linear-chain states. The dependence of the linear chain survival time and dynamical isospin effects on impact parameters have been illustrated as well.
