Observation of two-proton radioactivity of (19)Mg by tracking the decay products

Mukha, I.; Sümmerer, K.; Acosta Sánchez, Luis Armando; Álvarez, M. A. G.; García Ramos, José Enrique

doi:10.1103/PhysRevLett.99.182501

Author

Mukha, I.; Sümmerer, K.; Acosta Sánchez, Luis Armando; Álvarez, M. A. G.; García Ramos, José Enrique
Publication Date

2007-11-02
Publisher

American Physical Society
Citation

Mukha, I., Sümmerer, K., Acosta Sánchez, L.A., Álvarez, M.A.G., García Ramos, J.E... [et al] :"Observation of two-proton radioactivity of (19)Mg by tracking the decay products. Physical Review Letters. Vol. 99, n. 18 (2007). ISSN 0031-9007
Abstract

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.
URI

http://hdl.handle.net/10272/5528

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Observation of two-proton radioactivity of (19)Mg by tracking the decay products

Author

Mukha, I.; Sümmerer, K.; Acosta Sánchez, Luis Armando; Álvarez, M. A. G.; García Ramos, José Enrique

Publication Date

2007-11-02

Publisher

American Physical Society

Citation

Mukha, I., Sümmerer, K., Acosta Sánchez, L.A., Álvarez, M.A.G., García Ramos, J.E... [et al] :"Observation of two-proton radioactivity of (19)Mg by tracking the decay products. Physical Review Letters. Vol. 99, n. 18 (2007). ISSN 0031-9007

Abstract

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.