Abstract
Estimates are given for half-lives of the radioactive decay of radium and radon isotopes by emission of nuclei. The classical one-dimensional WKB approximation for penetration through a pure Coulomb barrier is used in the calculations. Results indicate that naturally occurring radon isotopes are emitters like their parent radium isotopes, whose decay rates by emission of nuclei have recently been measured. The predicted half-lives for decay of , , and by emission of nuclei are in the range – yr. For radium and radon isotopes the minimum half-life is obtained when the double-magic and the semimagic , respectively, are the daughter products of these new radioactive decay modes.
- Received 15 April 1986
DOI:https://doi.org/10.1103/PhysRevC.34.2261
©1986 American Physical Society