Abstract
In two separate experiments the half-life of has been measured to be 19.294±0.016 s and 19.300±0.041 s. This has resolved the previous disagreement in the literature and gives a final value of 19.290±0.012 s when combined with the other, concordant determinations. Only the branching ratio now needs to be remeasured to enable the ft value of the superallowed positron decay to be calculated with a precision of 0.1%.
- Received 26 April 1989
DOI:https://doi.org/10.1103/PhysRevC.41.246
©1990 American Physical Society