Abstract
The beta-delayed alpha-particle emission from has been studied and the absolute beta decay branching ratios of to the and states in measured. The nuclei were produced using a 35-MeV/nucleon beam and a thick Ta target. Reaction products were separated (from the beam) using a reaction products mass separator. A silicon telescope including five detectors and a two-dimensional, position-sensitive, gas counter was used in the focal plane of the mass separator. We obtain beta decay branching ratios of 6.8±0.5% and 1.8±0.2 % to the and states, respectively, assuming 100% alpha-particle decay branching ratios for these states. Shell-model predictions are compared with these experimental results. The relevance of these data to a new proposed search for parity violation in is discussed.
- Received 7 November 1988
DOI:https://doi.org/10.1103/PhysRevC.39.1985
©1989 American Physical Society