标题： 相互作用玻色子模型中超形变核的描述 显示英文标题

标题： Description of superdeformed nuclei in the interacting boson model

摘要： 相互作用玻色子模型被扩展以描述超形变带的谱学。 在第二极小值处的模型微观结构被讨论，超形变玻色子被引入作为新的构建块。 通过$1/N$展开方法实现了四极矩哈密顿量的解。 讨论了四极矩参数对动力转动惯量和电四极矩跃迁速率的影响，并将结果用于描述Hg-Pb和Gd-Dy区域中的超形变带。 显示英文摘要

摘要： The interacting boson model is extended to describe the spectroscopy of superdeformed bands. Microscopic structure of the model in the second minimum is discussed and superdeformed bosons are introduced as the new building blocks. Solutions of a quadrupole Hamiltonian are implemented through the $1/N$ expansion method. Effects of the quadrupole parameters on dynamic moment of inertia and electric quadrupole transition rates are discussed and the results are used in a description of superdeformed bands in the Hg-Pb and Gd-Dy regions.