Decay ofOs194

${\mathrm{Os}}^{194}$ has been produced by intense neutron irradiation of osmium metal. The species was conclusively identified from the growth of its 19-h ${\mathrm{Ir}}^{194}$ daughter. The measured half-life is 5.8±0.4 years. The ${\mathrm{Os}}^{193}$ neutron-capture cross section is estimated to be approximately 8 barns for reactor neutrons. The radiations accompanying the decay of chemically purified ${\mathrm{Os}}^{194}$ sources have been investigated by using scintillation and proportional-counter spectrometers. The total $\beta$-decay disintegration energy is 97±2 keV. Two electromagnetic transitions, both predominantly $M1\mathrm{}$, accompany ${\mathrm{Os}}^{194}$ decay, with energies of 42.8±0.2 keV (abundance=27±5%) and 82.3±1.0 keV (abundance=4.8±1.0×${10}^{-2\mathrm{}}$%). It appears that these result from $\beta$-decay branches directly populating levels in ${\mathrm{Ir}}^{194}$ at these energies. The decay data indicate spins and parities of either 0- or 1- for these two states. The observed levels are compared with those to be expected for odd-odd nuclei in this mass region.