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

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

2011-10-06

arxiv.org/abs/1110.1236v1

Physics

Nuclear Physics

Nuclear Experiment

Scientific paper

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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