The quadrupole collectivity in ${}_{}{}^{182\mathrm{-}184}{}_{}{}^{}\mathrm{W}$ has been studied by means of heavy-ion coulomb excitation with ${}_{}{}^{58}{}_{}{}^{}\mathrm{Ni}$ and ${}_{}{}^{136}{}_{}{}^{}\mathrm{Xe}$ projectiles; the deexcitation γ rays were measured in γ-p-p triple coincidence experiments. These data were used to determine, model-independently, both the static and transition matrix elements for the low-lying states in these nuclei with a semiclassical Coulomb-excitation least-squares search code. The results for the quadrupole moments of the second $2^{+}$ states and the E2 transitions between the γ band and the ground-state band in these nuclei do not support the prediction of a strong mixing between the β- and γ-vibrational bands in tungsten nuclei made by the pairing-plus-quadrupole model of Kumar and Baranger.

• Received 27 April 1989

DOI:https://doi.org/10.1103/PhysRevC.40.R3