摘要
对于发生在同一个原子核中的、从一种高有序激发模式向着另一种低有序激发模式演化的机理和物理图像,提出了一种新的理解:被布居到高角动量态的高有序激发核,以E2跃迁方式先行退耦到yrast带,再退耦到共存区时释放了结构能,诱发价核子对耦合强度改变,重新组合出低有序的激发模式基准态,实现了基准态结构的过渡.从微观上看,这是一种既温和而又平稳的转变.并以76Sr核为例作了深入阐述.
A new viewpoint is proposed for understanding the quantum phase transition from a higher-ordered excitation model to other lower-ordered one, which suggests that a nucleus populated at high-momentum state decouples firstly to the yrast-band with the E2-trasitions mode, and then to the coexist region, wherein the structure-energy is released, the change in the nucleon coupling intensity ensues, finally the basic state of the lower-ordered excitation model is reconstructed, the evolution of basic states structure is accomplished. Therefore this is a smooth and calm transition. Using an example of the ^76Sr nucleus, the problem is discussed carefully.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第7期4542-4547,共6页
Acta Physica Sinica
基金
贵州省教育厅自然科学重点项目(批准号:黔教科2006318)
贵州省科学技术基金(批准号:黔科合J字[2009]2071号)资助的课题~~
