{"paper":{"title":"Spectroscopy of $^{18}$Na: Bridging the two-proton radioactivity of $^{19}$Mg","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Lefebvre-Schuhl, A. M. S\\'anchez-Ben\\'itez, C. Borcea, C. Ducoin, D.Y. Pang, F. de Grancey, F. de Oliveira Santos, F. Rotaru, G. Lotay, I. Celikovic, I. Stefan, J. Alc\\'antara-N\\'u\\~nez, J.-C. Ang\\'elique, J. Kiener, J. Mrazek, K. Subotic, L. Achouri, L. Caceres, L. Perrot, M. Assi\\'e, M. Fallot, M-G. Saint-Laurent, M. Stanoiu, N. Smirnova, O. Kamalou, P.J. Woods, P. Ujic, R. Borcea, R. Wolski, T. Al Kalanee, T. Davinson, V. Chudoba, Y. Lam, Yu. Sobolev","submitted_at":"2011-10-06T12:09:05Z","abstract_excerpt":"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."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.1236","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}