形变团簇中轨道磁偶极模的全微观分析
Orbital Magnetic Dipole Mode in Deformed Clusters: A Fully Microscopic Analysis
摘要：
在一个自洽的随机相位近似的方法，充分利用壳结构的集群的变形集群在一个示意性的模型预测的轨道M1集体模式进行了研究。阐明了激发的微观机制，并建立了与E2模的密切关系。研究表明，在一个大的能量区间内，模式的M1强度是分散的。尽管如此，在低能量，远低于压倒性的偶极等离子体共振，剩余的部分是在示意性模型中预测的强度相媲美。这一结果的重要性，在未来的实验中强调。
英文摘要：
The orbital M1 collective mode predicted for deformed clusters in a schematic model is studied in a self-consistent random-phase-approximation approach which fully exploits the shell structure of the clusters. The microscopic mechanism of the excitation is clarified and the close correlation with E2 mode established. The study shows that the M1 strength of the mode is fragmented over a large energy interval. In spite of that, the fraction remaining at low energy, well below the overwhelming dipole plasmon resonance, is comparable to the strength predicted in the schematic model. The importance of this result in view of future experiments is stressed.
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