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Observation of two-proton radioactivity of Mg19 by tracking the decay products

 

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Opened Access Observation of two-proton radioactivity of Mg19 by tracking the decay products
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Author: Mukha, I.
González Álvarez, Marcos Aurelio
Espino Navas, José Manuel
Gómez Camacho, Joaquín José
Sümmerer, K.
Acosta, L.
Casarejos, E.
Chatillon, A.
Department: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Date: 2007-10-29
Published in: Physical Review Letters, 99 (18), 182501-1-182501-5.
Document type: Article
Abstract: 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.
Cite: Mukha, I., González Álvarez, M.A., Espino Navas, J.M., Gómez Camacho, J.J., Sümmerer, K., Acosta, L.,...,Chatillon, A. (2007). Observation of two-proton radioactivity of Mg19 by tracking the decay products. Physical Review Letters, 99 (18), 182501-1-182501-5.
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URI: http://hdl.handle.net/11441/62641

DOI: 10.1103/PhysRevLett.99.182501

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