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

M. Assié; F. de Oliveira Santos; T. Davinson; F. de Grancey; L. Achouri; J. Alcántara-Núñez; T. Al Kalanee; J. -C. Angélique; C. Borcea; R. Borcea; L. Caceres; I. Celikovic; V. Chudoba; D. Y. Pang; C. Ducoin; M. Fallot; O. Kamalou; J. Kiener; Y. Lam; A. Lefebvre-Schuhl; G. Lotay; J. Mrazek; L. Perrot; A. M. Sánchez-Benítez; F. Rotaru; M-G. Saint-Laurent; Yu. Sobolev; N. Smirnova; M. Stanoiu; I. Stefan; K. Subotic; P. Ujic; R. Wolski; P. J. Woods

doi:10.1016/j.physletb.2012.04.059

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arXiv · 1110.1236

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

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Abstract

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.

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M. Assié, F. de Oliveira Santos, T. Davinson, F. de Grancey, L. Achouri, J. Alcántara-Núñez, T. Al Kalanee, J. -C. Angélique, C. Borcea, R. Borcea, L. Caceres, I. Celikovic, V. Chudoba, D. Y. Pang, C. Ducoin, M. Fallot, O. Kamalou, J. Kiener, Y. Lam, A. Lefebvre-Schuhl, G. Lotay, J. Mrazek, L. Perrot, A. M. Sánchez-Benítez, F. Rotaru, M-G. Saint-Laurent, Yu. Sobolev, N. Smirnova, M. Stanoiu, I. Stefan, K. Subotic, P. Ujic, R. Wolski, P. J. Woods. 2011-10-06. Spectroscopy of $^{18}$Na: Bridging the two-proton radioactivity of $^{19}$Mg. https://doi.org/10.1016/j.physletb.2012.04.059

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