Identical bands in widely dispersed nuclei

Abstract

Low spin identical bands are found in sets of widely dispersed nuclei, spanning as much as 24 mass units. Moreover, they occur in regions of rapid structural and shape changes. A correlation ansatz to identify such nuclei, based on the concepts of ${\mathit{N}}_{\mathit{p}}$${\mathit{N}}_{\mathit{n}}$ and F spin, is discussed.