Spectroscopy of $^{18}$Na: Bridging the two-proton radioactivity of $^{19}$Mg

Spectroscopy of $^{18}$Na: Bridging the two-proton radioactivity of $^{19}$Mg

The unbound nucleus $^{18}$Na, the intermediate nucleus in the two-proton radioactivity of $^{19}$Mg, was studied by the measurement of the resonant elastic scattering reaction $^{17}$Ne(p,$^{17}$Ne)p performed at 4 A.MeV. Spectroscopic properties of the low-lying states were obtained in a R-matrix...

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Veröffentlicht in:Physics letters. B 2012-06, Vol.712, p.198-202
Hauptverfasser: Assié, M., de Oliveira Santos, Francois, Davinson, T., de Grancey, F., Achouri, N.L., Alcántara-Núñez, J., Al Kalanee, T., Angélique, J.C., Borcea, C., Borcea, R., Caceres, L., Celikovic, I., Chudoba, V., Pang, D. Y., Ducoin, C., Fallot, Muriel, Kamalou, O., Kiener, J., Lam, Y., Lefebvre-Schuhl, A., Lotay, G., Mrazek, J., Perrot, L., Sánchez-Benítez, A. M., Rotaru, F., Saint-Laurent, M.G., Sobolev, Yu, Smirnova, N., Stanoiu, M., Stefan, I., Subotic, K., Ujic, P., Wolski, R., Woods, P. J.
Format: Artikel
Sprache:eng
Schlagworte:
Nuclear Experiment
Physics
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Zusammenfassung:The unbound nucleus $^{18}$Na, the intermediate nucleus in the two-proton radioactivity of $^{19}$Mg, was studied by the measurement of the resonant elastic scattering reaction $^{17}$Ne(p,$^{17}$Ne)p performed at 4 A.MeV. Spectroscopic properties of the low-lying states were obtained in a R-matrix analysis of the excitation function. Using these new results, we show that the lifetime of the $^{19}$Mg radioactivity can be understood assuming a sequential emission of two protons via low energy tails of $^{18}$Na resonances.
ISSN:0370-2693
DOI:10.1016/j.physletb.2012.04.059