First observation of multi phonon gamma vibrational bands in odd-odd 104Nb

High spin states of neutron rich nucleus 104Nb have been reinvestigated by gamma-gamma-gamma and gamma-gamma-gamma-gamma coincidence events following 252Cf spontaneous fission with Gammasphere and 238U+9Be induce fission with VAMOS++, EXOGAM and AGATA at GANIL. The one and two phonon gamma vibrational bands in 104Nb have been identified. Projected shell model calculations have been performed and found to be in good agreement with the experimental data.