Nuclear structure of $$^{181}$$ 181 Au studied via $$\upbeta ^+$$ β + /EC decay of $$^{181}$$ 181 Hg at ISOLDE

The $$\upbeta ^+$$ /EC decay of mass separated samples of $$^{181}$$ Hg was studied employing the TATRA spectrometer at the ISOLDE facility at CERN. The decay scheme was constructed for the first time. A Broad Energy Germanium detector was used to achieve this by combination of high-gain $$\upgamma $$ -ray singles spectroscopy and $$\upgamma $$ – $$\upgamma $$  coincidences. The systematics of excited states associated with the 1 $$h_{11/2}$$ proton-hole configuration in odd-Au isotopes was extended.