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The electric quadrupole transition probabilities of ^98-104Ru isotopic chain are investigated in the both shell and interacting boson models frameworks. The OXBASH code for shell model and the SU(1,1)-affine infinite  dimensional algebra for interacting boson model are used to determine the quadrupole transition rates. Also, the dependence of calculation accuracy and the effective charges to quadrupole deformation and experimental half-lives are considered and the quadrupole moments are computed for these nuclei. The shell model make exact results for such nuclei which are located near the closed shell and also verified the existence of closed sub-shell at N=58 neutron number. On the other hand, the interacting boson model make more exact results for nuclei which have signatures of deformation and also the quadrupole intra-band transition rates. The results suggest a shape coexistence in the ¹⁰²Ru nucleus.

Keywords: Shape coexistence, electric quadrupole transition probabilities, shell model, interacting boson model.

     

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