SIMULTANEOUS DESCRIPTION OF FOUR POSITIVE AND FOUR NEGATIVE PARITY BANDS

摘要

A unified description of four positive and four negative parity rotational bands for nuclei with and without octupole deformation is presented within an extended version of the coherent state model. Signatures for octupole deformation in the ground as well as in the excited bands are pointed out. Specific features of octupole deformed nuclei related with the electric and magnetic transition probabilities are presented. Comments concerning the project of enlarging the quadrupole and octupole boson system by coupling a set of particles leading to a final system with a chiral symmetry are added. To save the space, only part of the applications performed in the last decade were reviewed.