Spectroscopy of ¹⁸Na: Bridging the two-proton radioactivity of ¹⁹Mg

M. Assi\'e , F. de Oliveira Santos , T. Davinson , F. de Grancey , L. Achouri , J. Alc\'antara-N\'u\~nez , T. Al Kalanee , J.-C. Ang\'elique

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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. S\'anchez-Ben\'itez F. Rotaru M-G. Saint-Laurent Yu. Sobolev N. Smirnova M. Stanoiu I. Stefan K. Subotic P. Ujic R. Wolski P.J. Woods

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classification ⚛️ nucl-ex

keywords radioactivitynucleustwo-protonanalysisassumingbridgingelasticemission

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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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Spectroscopy of ¹⁸Na: Bridging the two-proton radioactivity of ¹⁹Mg

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