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Observation of two-proton radioactivity of 19Mg by tracking the decay products.
- Source :
-
Physical review letters [Phys Rev Lett] 2007 Nov 02; Vol. 99 (18), pp. 182501. Date of Electronic Publication: 2007 Oct 29. - Publication Year :
- 2007
-
Abstract
- We have observed the two-proton radioactivity of the previously unknown (19)Mg ground state by tracking the decay products in-flight. For the first time, the trajectories of the 2p-decay products, (17)Ne+p+p, have been measured by using tracking microstrip detectors which allowed us to reconstruct the 2p-decay vertices and fragment correlations. The half-life of (19)Mg deduced from the measured vertex distribution is 4.0(15) ps in the system of (19)Mg. The Q value of the 2p decay of the (19)Mg ground state inferred from the measured p-p-(17)Ne correlations is 0.75(5) MeV.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 99
- Issue :
- 18
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 17995400
- Full Text :
- https://doi.org/10.1103/PhysRevLett.99.182501