Decay ofOs182andOs183. II. Coincidences, Conversion Coefficients, and Decay Schemes

The 382-kev transition in ${\mathrm{Re}}^{183}$ was shown to have a conversion coefficient of (1.09±0.14)×${10}^{-2\mathrm{}}$ which established the transition as $E1\mathrm{}$. The half-life of the state from which this arises was found to be (7.7±0.5)×${10}^{-9\mathrm{}}$ sec from delayed coincidence measurements, indicating a hindrance factor of 3×${10}^6$ relative to the single particle value. Other transition multipolarities were assigned from their conversion coefficients, $L$ subshell and $\frac{K}{L}$ ratios as obtained from the preceding paper. Amongst these the 170.72-kev isomeric transition in ${\mathrm{Os}}^{183}$ was identified and shown to be $M4\mathrm{}$ with a hindrance factor of 12. Decay schemes for ${\mathrm{Os}}^{183}$ and ${\mathrm{Os}}^{183m}$ are established and good agreement is obtained between the proposed spins and parties and those suggested by the scheme of energy levels in a spheroidal potential as calculated by Nilsson.