发表机构
Beihang University（北京航空航天大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
利用相对论组态相互作用密度泛函理论重新研究$^{128}$Cs的核手性，通过分析能谱和电磁性质，发现静态手性仅存在于$I=17\hbar$附近的狭窄自旋区间。
AI 中文摘要
在微观相对论组态相互作用密度泛函（ReCD）理论框架内重新审视了$^{128}$Cs中的核手性。通过同时考察正宇称双带结构的能谱、电磁跃迁概率、$g$因子、谱学四极矩以及潜在的角动量几何，对这些双带进行了研究。在不引入针对谱学数据调整的额外参数的情况下，ReCD计算为现有的实验观测量提供了总体满意的描述。特别是，对现有实验数据和计算得到的谱学观测量进行的综合分析表明，在$I = 17\hbar$附近，伙伴带之间存在定性相似性。通过方位角图对角动量几何进行的微观分析揭示了随自旋增加转动模式的显著演化：在$I < 17\hbar$时为手性振动，在$I = 17\hbar$时为静态手性，以及在更高自旋时向平面转动的过渡。这些结果表明，在当前的ReCD计算中，$^{128}$Cs的静态手性几何被限制在$I = 17\hbar$附近的一个狭窄自旋区间内。
英文摘要
Nuclear chirality in $^{128}$Cs is revisited within the microscopic relativistic configuration-interaction density functional (ReCD) theory. The positive-parity doublet bands are investigated by simultaneously examining their energy spectra, electromagnetic transition probabilities, $g$ factors, spectroscopic quadrupole moments, and underlying angular-momentum geometry. Without introducing additional parameters adjusted to the spectroscopic data, the ReCD calculations provide an overall satisfactory description of the available experimental observables. In particular, a comprehensive analysis of the available experimental data and the calculated spectroscopic observables indicates qualitative resemblances between the partner bands around $I = 17\hbar$. A microscopic analysis of the angular-momentum geometry through \textit{azimuthal plots} reveals a distinct evolution of the rotational mode with increasing spin: chiral vibration at $I < 17\hbar$, static chirality at $I = 17\hbar$, and a transition toward planar rotation at higher spins. These results suggest that static chiral geometry in $^{128}$Cs is confined to a narrow spin region around $I = 17\hbar$ within the present ReCD calculations.
Comments17 pages, 4 figures
