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Nature 439, 279 (19 January 2006) | doi:10.1038/439279a; Published online 18 January 2006
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Nuclear physics: Odd couple decays
Juha Äystö1
Abstract
The decay of proton-rich nuclei by the emission of a single proton has been known about for some time, and is well understood. The latest observation of two-proton emission, however, will provoke some head-scratching.
On page 298 of this issue1, Mukha and colleagues report the simultaneous emission of two protons from a complex, long-lived state of the silver isotope 94Ag, which has an odd number of protons. This type of radioactive decay is expected only for proton-rich nuclei with an even number of protons — so the observation leaves nuclear physicists with some explaining to do.
- Juha Äystö is in the Department of Physics, University of Jyväskylä, Jyväskylä 40351, Finland.
Email: juha.aysto@phys.jyu.fi
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Proton decay at the drip-lineNature News and Views (02 May 1996)
Two-proton radioactivity Caught in the actNature Physics News and Views (01 Dec 2007)
RESEARCH
Proton????proton correlations observed in two-proton radioactivity of 94 AgNature Letters to Editor (19 Jan 2006)
