{"paper":{"title":"Spectroscopy of $^{28}$Na: shell evolution toward the drip line","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Gade, A. Lemasson (GANIL), A. Lepailleur (GANIL), A. Mutschler (IPNO), A. Westerberg, B.A. Brown, B. Bastin (GANIL), C. Bancroft, C. Borcea, C. Langer, D. Barofsky, D. Bazin, D. Smalley, D. Sohler, D. Weisshaar, E. Khan (IPNO), F. De Oliveira Santos (GANIL), F. Negoita, F. Recchia, F. Rotaru, G.F. Grinyer (GANIL), G. Perdikakis, H. Iwasaki, J.C. Thomas (GANIL), J. Lloyd, K. Wimmer, L. Caceres (GANIL), L. Gaudefroy (DAM/DIF), M.-G. Saint-Laurent (GANIL), M. Stanoiu, M. Vandebrouck (IPNO), O. Llidoo, O. Sorlin (GANIL), R. Borcea, S. Gr\\'evy (CENBG), S.R. Stroberg, S. Saenz, T. Baugher, T. Kr\\\"oll, T. Redpath, T. Roger (GANIL), V. Bader, V. Bildstein","submitted_at":"2015-03-30T07:10:51Z","abstract_excerpt":"Excited states in $^{28}$Na have been studied using the $\\beta$-decay of implanted $^{28}$Ne ions at GANIL/LISE as well as  the in-beam $\\gamma$-ray spectroscopy at the NSCL/S800 facility. New states of positive (J$^{\\pi}$=3,4$^+$) and negative (J$^{\\pi}$=1-5$^-$) parity are proposed. The former arise from the coupling between 0d$\\_{5/2}$ protons and a 0d$\\_{3/2}$ neutron, while the latter are due to couplings with 1p$\\_{3/2}$ or 0f$\\_{7/2}$ neutrons. While the relative energies between the  J$^{\\pi}$=1-4$^+$ states are well reproduced with the USDA interaction in the N=17 isotones, a progress"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.08568","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"}