Critical point symmetries in deformed odd-A nuclei

摘要

A scheme that elucidates the nature of critical point symmetries in deformed odd-A nuclei by linking themnto critical point symmetries of neighboring even-even nuclei is introduced. Specifically, a new symmetry, callednSX(3), is advanced that shows primary characteristics of an assumed strong-coupling limit for odd-A systems.nIt is found that the SX(3) symmetry can be used to identify the soft collective structures in odd-A system. Anpreliminary application of the new scheme to describe the lowest positive parity bands of 193Ir is also shown.