Gamow-Teller beta Decay in Heavy Spherical Nuclei and Unlike Particle-Hole Random Phase Approximation

摘要

Allowed Gamow-Teller beta decay rates are calculated for medium and heavy spherical nuclei with the use of the pairing plus quadrupole model with additional n-p forces. A schematic force of the form 'chi tau. tau sigma. sigma' is found to be particularly important. A random phase approximation treatment of this force is developed and shown to be correct in the weak and strong coupling limits. The relation between the retarded beta decay rates and a supermultiplet structure is discussed. (Author)