On the Triaxial Deformation in Transitional Odd-A Nuclei

Abstract
The essential difference as well as the apparent identity between the triaxial-rotor model and the gamma-vibrational model have been discussed. From the gamma decay mode, the [19/2 - ] 1 states of the j =11/2 - family in 187 Ir and 189 Ir have been identified as the K = j +4 states, the presence of which contradicts the particle plus triaxial-rotor model.