Abstract
The half-life of has been measured to be (1.5 ± 0.3) × yr, a value in significant disagreement with the previously accepted value of (2.7 ± 0.4) × yr. We discuss several implications of the revised half-life.
- Received 6 March 1972
DOI:https://doi.org/10.1103/PhysRevLett.29.372
©1972 American Physical Society