A Kπ=0+ Band in W184

Two high-energy $\gamma$ rays of 6409±3 and 6290±3 keV, produced following the capture of 7.6-eV neutrons by ${}_{}{}^{183}{}_{}{}^{}\mathrm{W}$, populate states in ${}_{}{}^{184}{}_{}{}^{}\mathrm{W}$ at 1004 and 1123 keV, respectively. The spectrum of $\gamma$ rays in coincidence with each of these primary $\gamma$ rays has been measured. These measurements result in an assignment $I^{\pi }=2^{+}$ for the 1123-keV state and suggest that the 1004- and 1123-keV states are the $I^{\pi }=0^{+} \mathrm{and} 2^{+}$ members, respectively, of a $K=0\mathrm{}$ band. Band-mixing calculations based on the branching ratios for decay of the 1123-keV state to members of the ground-state band have been carried out, and values of the band-mixing parameter $z_0$ have been derived.