Description of properties of 104Ru low-lying collective states of quadrupole type in the framework of interacting boson model (JBM1)

Investigation, which shows that a collection of experimental data on 104Ru can be successfully described in the framework of the IBM1 model of interacting bosons with a modified operator of the E2-transition without explicit application of a new degree of freedom-g-boson, is carried out. In this case it is possible to explain not only the energy spectrum, but many features of probability behaviour of E2-transitions and quadrupole moments. Analysis carried out shows that the main difference of IBM1 from geometric models -the finiteness of the boson number - is turned out to be insignificant at spin values I<4Ω/3, where Ω is the maximum boson number, that explains proximity of the IBM1 results and the model of anharmonic oscillations