Neutron-rich 104, 106, 108 Mo isotopes in the generalized collective model

The Generalized Collective Model (GCM) is applied to the even-even neutron-rich 104, 106, 108 Mo isotopes. With GCM the energy spectra, absolute B(E2) values, some B(E2) branching ratios and Potential Energy Surfaces (PES) for the 104, 106, 108 Mo isotopes are calculated. The PES of all these isotopes show a prolate minimum which becomes more pronounced in 106 Mo. The results are in agreement with the recent experimental report but are different from the viewpoint of the triaxial rotors, or γ-soft deformation. Through a systematic study of PES, it is suggested that the even-even neutron-rich 104, 106, 108 Mo isotopes have prolate deformation.