Microscopic interacting boson model calculations for even-even~(128-138) Ce nuclei

摘要

In this study, we determined the most appropriate Hamiltonian that is needed for the present calculations of energy levels and B(E2) values of ~(128-138)Ce nuclei which have a mass around A ≌ 130 using the interacting boson model (IBM). Using the best-fitted values of parameters in the Hamiltonian of the IBM-2, we have calculated energy levels and B{E2) values for a number of transitions in ~(128,130,132,134,136,138)Ce. The results were compared with the previous experimental and theoretical (PTSM model) data and it was observed that they are in good agreement. Also some predictions of this model have better accuracy than those of PTSM model. It has turned out that the interacting boson approximation (IBA) is fairly reliable for calculating spectra in the entire set of~(128,130,132,134,136,138)Ce isotopes and the quality of the fits presented in this paper is acceptable.