Studies of Triaxial Rotor and Band Mixing in $^{186,\,188,\,190,\,192}$\textrm{Os}

The $E2$ matrix elements of the Osmium isotopes are studied in the framework of collective rotations [1]. The rotational model with $\Delta K=2$ mixing fits the data fairly well; but deviations at high spin suggest that the spin-dependance of $\Delta K=2$ mixing in the rotor model is too strong. This supports a finding in $^{166}$\textrm{Er} [2]. \\ \\ $[1]$ J.L.~Wood, A-M.~Oros-Peusquens, R.~Zaballa, J.M.~Allmond, and W.D. Kulp, Phys.~Rev.~C \textbf{70}, 024308 (2004). \\ $[2]$ W.D.~Kulp, J.M.~Allmond, P.~Hatcher, and J.L.~Wood, Phys.~Rev.~C \textbf{73}, 014308 (2006).