论文标题
CO $ _2 $簇中的贝壳簇
Shells in CO$_2$ Clusters
论文作者
论文摘要
在蒸发合奏框架中分析了（Co $ _2 $）$ _ N $簇的丰度（CO $ _2 $）$ _ N $簇（最高$ n \ $ 500）。分析表明，群集稳定函数在所有扩展条件下都显示出惊人的通用模式。这些模式反映了单个簇的固有特性。通过此分析，确定了尺寸依赖性的簇结合能，确定了壳和子壳闭合大小，并确认了高于$ n \ 130 $的尺寸的cuboctahedral填料顺序。证明解离能的几个百分比变化转化为显着的丰度变化，尤其是对于较大的簇。
Abundance spectra of (CO$_2$)$_N$ clusters (up to $N \approx$ 500) acquired under a wide range of adiabatic expansion conditions are analyzed within the evaporative ensemble framework. Analysis reveals that cluster stability functions display strikingly universal patterns for all expansion conditions. These patterns reflect the inherent properties of individual clusters. From this analysis the size-dependent cluster binding energies are determined, shell and subshell closing sizes identified, and cuboctahedral packing ordering for sizes above $N \approx 130$ is confirmed. It is demonstrated that a few percent variation in the dissociation energies translates into significant abundance variations, especially for the larger clusters.
