{"paper":{"title":"Isospin symmetry in $B(E2)$ values: Coulomb excitation study of ${}^{21}$Mg","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. B. Garnsworthy, A. Chester, A. Kurkjian, A. Saxena, C. Andreoiu, C. E. Svensson, C. Y. Wu, D. Kisliuk, D. M\\\"ucher, D. Southall, E. McGee, F. Sarazin, G. C. Ball, G. Hackman, G.H. Sargsyan, J. Henderson, J. K. Smith, J. Measures, J. Pakarinen, J. Park, J. Smallcombe, K. D. Launey, K. G. Leach, K. Starosta, K. Whitmore, L. J. Evitts, M. Bowry, M. Buckner, M. Holl, M. Williams, N. Bernier, P. C. Srivastava, P. Ruotsalainen, P. T. Greenlees, R. Caballero-Folch, R. Frederick, R. Julin, S. Cruz, S. R. Stroberg, T. Grahn","submitted_at":"2018-11-02T08:26:19Z","abstract_excerpt":"The $T_z$~=~$-\\frac{3}{2}$ nucleus ${}^{21}$Mg has been studied by Coulomb excitation on ${}^{196}$Pt and ${}^{110}$Pd targets. A 205.6(1)-keV $\\gamma$-ray transition resulting from the Coulomb excitation of the $\\frac{5}{2}^+$ ground state to the first excited $\\frac{1}{2}^+$ state in ${}^{21}$Mg was observed for the first time. Coulomb excitation cross-section measurements with both targets and a measurement of the half-life of the $\\frac{1}{2}^+$ state yield an adopted value of $B(E2;\\frac{5}{2}^+\\rightarrow\\frac{1}{2}^+)$~=~13.3(4)~W.u. A new excited state at 1672(1)~keV with tentative $\\f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.00774","kind":"arxiv","version":2},"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"}