Calculation of Energy Levels of Nucleus ¹²⁷I in the Particle-Triaxial-Rotor Model

Theoretical calculations have been performed for nucleus ¹²⁷I in the framework of the particle-triaxial-rotor model. The calculated results indicate that both the 5/2⁺ and 7/2⁺ bands are oblate deformed bands. Their configurations are associated with the πd_5/24 0 25/2 and πg_7/24 0 47/2 orbitals and the strong mixing between them. Meanwhile a possible explanation of the strong mixing is given.