近日，复旦大学周波团队研究了在7α团簇模型中探索²⁸Si的环面α团簇结构。2026年3月10日出版的《中国物理C》杂志发表了这项成果。

在生成坐标法框架下，以边长作为生成坐标，采用Brink-Bloch 7α波函数研究了²⁸Si中的两种7α团簇构型——均匀环形构型与盘状构型。在施加几何对称性约束的7α团簇模型框架内，研究组发现均匀环形构型可能出现在7α阈能以上约 40 MeV处。这一结果为²⁸Si中环形结构的平均场描述提供了来自团簇模型的补充视角。

附：英文原文

Title: Exploring toroidal α-cluster configurations in 28Si within the 7α cluster model

Author: Su-Yu Zhou, Bo Zhou

Issue&Volume: 2026-03-10

Abstract: Two 7α cluster configurations in 28Si—a uniform toroidal configuration and a disk-like configuration—are investigated within the framework of the generator coordinate method (GCM) with Brink-Bloch 7α wave functions by taking the edge length as the generator coordinate. Within the framework of the 7α cluster model with imposed geometric symmetry, we observe that a uniform toroidal configuration may emerge at approximately 40 MeV above the 7α threshold. This provides a cluster-model perspective that complements some mean-field descriptions of toroidal structure in 28Si.

DOI: 10.1088/1674-1137/ae4578

Source: http://hepnp.ihep.ac.cn/article/doi/10.1088/1674-1137/ae4578