论文标题
$γ$ -Softness in Atomic Nuclei的微观方面
Microscopic aspects of $γ$-softness in atomic nuclei
论文作者
论文摘要
$γ$ - 柔软度（核形状的三轴参数$γ$的波动）在原子核中观察到的微观起源是在三轴投影壳模型方法的框架中研究的，该方法基于具有多quasiparticle构型构型的变形平均图像。证明与准粒子激发的耦合将系统从$γ$ -rigid驱动到$γ$ -soft模式。作为$γ$ -soft核的说明性示例，已经针对$^{104} $ ru核进行了详细的研究。可用于该核的实验能量和大量测量的$ E2 $矩阵元素被非常准确地复制。计算出的$ e2 $矩阵元素的形状不变分析阐明了$^$ -soft $^{104} $ ru的$γ$ -soft。
The microscopic origin of the $γ$-softness (fluctuations in the triaxiality parameter $γ$ of the nuclear shape) observed in atomic nuclei is studied in the framework of the triaxial projected shell model approach, which is based on the deformed mean-field picture with multi-quasiparticle configuration space. It is demonstrated that the coupling to quasiparticle excitations drives the system from a $γ$-rigid to a $γ$-soft pattern. As an illustrative example for a $γ$-soft nucleus, a detailed study has been performed for the $^{104}$Ru nucleus. The experimental energies and a large sample of measured $E2$ matrix elements available for this nucleus are reproduced quite accurately. The shape invariant analysis of the calculated $E2$ matrix elements elucidates the $γ$-soft nature of $^{104}$Ru.
