Observation of two-proton radioactivity of Mg19 by tracking the decay products
We have observed the two-proton radioactivity of the previously unknown 19Mg ground state by tracking the decay products in-flight. For the first time, the trajectories of the 2p-decay products, 17Ne+p+p, have been measured by using tracking microstrip detectors which allowed us to reconstruct the 2...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2007 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/62641 |
| Acceso en línea: | http://hdl.handle.net/11441/62641 https://doi.org/10.1103/PhysRevLett.99.182501 |
| Access Level: | acceso abierto |
| Sumario: | We have observed the two-proton radioactivity of the previously unknown 19Mg ground state by tracking the decay products in-flight. For the first time, the trajectories of the 2p-decay products, 17Ne+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 19Mg deduced from the measured vertex distribution is 4.0(15) ps in the system of 19Mg. The Q value of the 2p decay of the 19Mg ground state inferred from the measured p−p−17Ne correlations is 0.75(5) MeV. |
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