广义相干态模型中的双电荷性质
Remarks on monopole charge properties within the Generalized Coherent State Model
摘要：
本文利用以前提出的统一描述核系统磁、电集体性质的广义相干态模型，研究了基态带电荷密度以及从$0^+_β$到$0^+_g$的E0跃迁.研究了核形变和角动量投影对电荷密度的影响。计算了十个核的跃迁振幅。将结果与以前的一些理论研究和现有的实验数据进行了比较。角动量投影的计算结果与以前的基态密度的微观计算结果一致。E0跃迁的计算结果与实验数据吻合得很好。还解决了形状过渡或形状共存如何反映在$ρ(E0)$行为中的问题。
英文摘要：
The Generalized Coherent State Model, proposed previously for a unified description of magnetic and electric collective properties of nuclear systems, is used to study the ground state band charge density as well as the E0 transitions from $0^+_β$ to $0^+_g$. The influence of the nuclear deformation and of angular momentum projection on the charge density is investigated. The monopole transition amplitude has been calculated for ten nuclei. The results are compared with some previous theoretical studies and with the available experimental data. Our results concerning angular momentum projection are consistent with those of previous microscopic calculations for the ground state density. The calculations for the E0 transitions agree quite well with the experimental data. Issues like how the shape transitions or shape coexistence are reflected in the $ρ(E0)$ behavior are also addressed.
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