The low-spin level structure of SPd was studied using high-resolution large volume Ge(Li) detectors for y-ray singles, coincidence, and angular correlation measurements.The measurements allowed the resolution of most of the discrepancies found among previous studies. In particular, the use of two Geg i) detectors for coincidences and angul. ar correlations allowed unambiguous placement of previously multiply placed y rays and resolved discrepancies in energy level or J" assignments. The experimental level structure and B(E2) ratios are compared with predictions of an anharmonic spherical vibrator model and a rotor-vibrator model; we find that the evidence strongly supports the latter of the two models. RADIOACTIVITY 8Pd Ifrom ' Rh~d ecay]; measured E&, I&, p-y coin, angular correlations"Ge(Li) detectors; deduced Is, logft, Jv for OtPd levels; theory: energy levels and B(E2) ratios, anharmonic spherical vibrator model and rotor-vibrator model.
The ground-state P branchings for several mass-separated Kr fission products and their daughters have been measured at the TRISTAN on-line separator facility at the Ames Laboratory Research Reactor. Absolute P counting was done with a 4~-geometry plastic scintillation detector and y spectra were taken simultaneously with a Ge(Li) detector. The deduced values of the ground-state P branching P~, expressed as a percentage of decays, are: ' Kr, 14+4 'Rb, 78.0~1.2 "Kr, 23~4 ' Rb, 25+5 Kr, 29+4~R bg 37+5; 'Kr, 10+4 'Rb, 5~5.RADIOACTIVITY ss, sa, ao. ai Kr ss. sa .ao. aiRb f+on 2ssU (+ f) j, Ge(Li) and 4~plastic scintillation detectors; deduced P, ; mass-separated parent Kr activities.
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