Cubic Interaction and Triaxiality in 236-246Pu Nuclei

In the present study, we investigate even-even 236-246PU isotopes with triaxial interacting boson model. Calculations for the energy levels and E2 transition probability were performed using the cubic terms. The study of the influence of cubic [d x d x d] and quadrupole [Q x Q x Q] interactions on the structure of these nuclei is undertaken. The potential energy surfaces as functions of the deformation parameters were calculated. It has been demonstrated how the cubic term L = 3 gives rise to a number of the observed properties of the Pu-nuclei. The comparison between the model results and available experimental data have shown that the structure of these nuclei can be investigated by an SU(3) Hamiltonian.