Abstract
We report on a $\ensuremath{\gamma}\ensuremath{\gamma}$ angular-correlation experiment investigating ${}^{200}$Hg after cold-neutron capture. The experiment was performed using eight high-purity germanium detectors mounted on an array installed at the PF1B neutron beam line of the research reactor of the Institut Laue-Langevin in Grenoble, France. The geometry of the array allows $\ensuremath{\gamma}\ensuremath{\gamma}$ angular-correlation analyses that can be used for the determination of level spins and multipole mixing ratios in ${}^{200}$Hg. We present multipole mixing ratios for secondary $\ensuremath{\gamma}$ rays and investigate the nature of the ${}^{200}$Hg neutron-capture state by analyzing the observed primary $\ensuremath{\gamma}$ rays of this nucleus.
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