{"paper":{"title":"Exploring the Low-$Z$ Shore of the Island of Inversion at $N = 19$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Gade, A. Grovom, A. Spyrou, A. Wersal, B. Luther, D. Bazin, D. Weisshaar, E. M. Lunderberg, G. Christian, G. F. Grinyer, G. F. Peaslee, J. Brown, J. D. Hinnefeld, J. E. Finck, J. K. Smith, J. Snyder, M. J. Strongman, M. Mosby, M. Thoennessen, M. Warren, N. Frank, P. A. DeYoung, S. Ash, S. Mosby, T. Baumann, T. Nagi, W. F. Rogers","submitted_at":"2012-01-05T19:17:02Z","abstract_excerpt":"The technique of invariant mass spectroscopy has been used to measure, for the first time, the ground state energy of neutron-unbound $^{28}\\textrm{F},$ determined to be a resonance in the $^{27}\\textrm{F} + n$ continuum at $2\\underline{2}0 (\\underline{5}0)$ keV. States in $^{28}\\textrm{F}$ were populated by the reactions of a 62 MeV/u $^{29}\\textrm{Ne}$ beam impinging on a 288 $\\textrm{mg/cm}^2$ beryllium target. The measured $^{28}\\textrm{F}$ ground state energy is in good agreement with USDA/USDB shell model predictions, indicating that $pf$ shell intruder configurations play only a small r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.1267","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"}