如何用极化γ射线确定核分子的形状
How to determine the shape of nuclear molecules with polarized gamma-rays
摘要：
最近已经提出了一种方法来建立的几何形状的α-集群安排在$^{12}$ C利用偏振γ射线。沿和垂直于电场矢量的初始方向成90度的散射辐射的强度的比率（称为去极化比率）是允许支持振动的完全对称模式的性质的关键量。这允许与底层的点群结构连接，从而连接到核分子的几何形状。该方法是审查$^{12}$ C和扩展到其他配置，如三个不相等的集群和四个相同的集群（例如$^{16}$ O）。
英文摘要：
A method has been recently proposed to establish the geometry of the alpha-cluster arrangement in $^{12}$C making use of polarized gamma-rays. The ratio of intensities of scattered radiation at 90 degrees along and perpendicular to the initial direction of the electric field vector, called depolarization ratio, is a key quantity that allows to underpin the nature of totally symmetric modes of vibrations. This allows to connect with the underlying point-group structure and therefore to the geometric shape of the nuclear molecule. This method is reviewed for $^{12}$C and extended to other configurations, such as three unequal clusters and four identical clusters (e.g. $^{16}$O).
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