论文标题
N = Z核中的低能簇振动
Low-energy cluster vibrations in N = Z nuclei
论文作者
论文摘要
在许多实验中，在低能$α$ - 偶联的核中的显着过渡强度通常在低能量下（通常低于10 MeV）。在这项工作中，基于核能密度函数的显微镜框架，使用有限振幅法（FAM）探索了N = Z核的等相低能响应。根据激发的多极性和特定同位素的平衡变形，低能强度的功能显示出突出的峰值，这可以归因于集群结构的振动：$ a $α$+$+$^{12} $ c+$ c+$ c+$α$和$α$ a $+y $+$+$+$+^{16} $^{16} $ iin $^$^$^} $^} $^20} {20} {20} {20} {20} {20} {20} $^{12} $ c+$^{12} $ c in $^{24} $ mg，4 $α$+$+$^{12} $ c in $^{28} $ si等。这种集群激发在光核中受到较大变形的光核。
Significant transition strength in light $α$-conjugate nuclei at low energy, typically below 10 MeV, has been observed in many experiments. In this work the isoscalar low-energy response of N=Z nuclei is explored using the Finite Amplitude Method (FAM) based on the microscopic framework of nuclear energy density functionals. Depending on the multipolarity of the excitation and the equilibrium deformation of a particular isotope, the low-energy strength functions display prominent peaks that can be attributed to vibration of cluster structures: $α$+$^{12}$C+$α$ and $α$+$^{16}$O in $^{20}$Ne, $^{12}$C+$^{12}$C in $^{24}$Mg, 4$α$+$^{12}$C in $^{28}$Si, etc. Such cluster excitations are favored in light nuclei with large deformation.
