Abstract
The multipole mixing ratios of transitions in even-even osmium and platinum isotopes have been measured in order to test the predictions of the pairing-plus-quadrupole theory of Kumar and Baranger. The mixing ratios were determined from directional-correlation measurements on transitions in (populated in the decay of and in (populated in the decay of ). The radioactive iridium isotopes were produced by reactions, and the gold isotopes were produced by reactions. The equipment employed for the directional-correlation measurements consisted of two coaxial 30-cc Ge(Li) detectors and appropriate electronic equipment for high-resolution pulse-height analysis and timing analysis. The observed directional correlations were analyzed in terms of the appropriate mixing ratios, which are defined explicitly. The following results were obtained (predictions of the Kumar-Baranger theory are listed in square brackets): , , , , , , , . Except for the 333-keV transition in the agreement of the experimental mixing ratios with the values and signs predicted by the Kumar-Baranger model is excellent.
- Received 18 August 1970
DOI:https://doi.org/10.1103/PhysRevC.3.240
©1971 American Physical Society