Decay ofIr192

Abstract

Gamma-gamma angular correlation experiments have been performed for the 604-316, 588-613, and 468-316 kev cascades in ${\mathrm{Pt}}^{192}$ and the 485-206 kev cascade in ${\mathrm{Os}}^{192}$. The data are consistent with a spin of 3 for the 690-kev level in ${\mathrm{Os}}^{192}$ and the 921- and 1201-kev levels in ${\mathrm{Pt}}^{192}$. The assignment of spin 3 to the 1201-kev level in ${\mathrm{Pt}}^{192}$ requires an admixture of about 8.5 percent $M1$ radiation in the 588-kev transition. Spin 5 for the ground state of ${\mathrm{Ir}}^{192}$ is indicated.