MIXING RATIOS OF TRANSITIONS IN DECAY OF IR192

Mixing ratios of the 485-keV transition in Os192 and the 296-, 308-, and 604-keV transitions in Pt192 populated from the decay of Ir192 were measured using the - directional-correlation method. In addition, the 468-316-keV, 589-612-keV, 885-316-keV, and 1063-316-keV - directional correlations in Pt192 have been remeasured. Coaxial and planar Ge(Li) detectors and NaI(Tl) scintillation detectors were used in different combinations depending on the energy resolution required for a particular measurement. The results for the mixing ratios are 485=+(10.9-1.5+2.1), 296=-(9.1-1.7+2.7), 308=-(9.91.0), and 604=+(2.00.2). The over-all agreement of the signs, as well as the absolute values of the mixing ratios with predictions of the pairing-plus-quadrupole model of Kumar and Baranger, is good. © 1969 The American Physical Society.