Discovery of Two Isotopes,and, at the Limits of Particle Stability
- 27 August 1973
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 31 (9), 614-616
- https://doi.org/10.1103/physrevlett.31.614
Abstract
We have used and time-of-flight techniques to observe the products of the interaction of 4.8-GeV protons with a uranium target. Two new isotopes, and , were observed to be particle stable, and two others, and , were shown to be particle unstable. The new isotope recently had been predicted to be particle stable, but the observation of was surprising because it was thought to be unstable on the basis of both theoretical predictions and previous experimental results.
Keywords
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