Observation of two-proton radioactivity of (19)Mg 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-°ight. For the ¯rst time, the trajectories of the 2p-decay products, 17Ne+p+p, have been measured by using tracking micro-strip detectors which allowed to reconstruct the 2p-de...
| Autores: | ; ; ; ; |
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| Tipo de documento: | Artigo |
| Data de publicação: | 2007 |
| País: | España |
| Recursos: | Universidad de Huelva (UHU) |
| Repositório: | Arias Montano. Repositorio Institucional de la Universidad de Huelva |
| Idioma: | Inglês |
| OAI Identifier: | oai:ariasmontano.uhu.es:10272/5528 |
| Acesso em linha: | http://hdl.handle.net/10272/5528 |
| Nível de acesso: | Acesso aberto |
| Resumo: | We have observed the two-proton radioactivity of the previously unknown 19Mg ground-state by tracking the decay products in-°ight. For the ¯rst time, the trajectories of the 2p-decay products, 17Ne+p+p, have been measured by using tracking micro-strip detectors which allowed 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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