{"paper":{"title":"Evidence for dipole nature of the low-energy $\\gamma$ enhancement in $^{56}$Fe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Bracco, A. C. Larsen, A. G\\\"orgen, A. V. Voinov, B. Million, F. Camera, G. M. Tveten, H. T. Nyhus, I. E. Ruud, M. Guttormsen, M. Wiedeking, N. Blasi, S. J. Rose, S. Leoni, S. Siem, T. K. Eriksen, T. Renstr{\\o}m, T. Tornyi, T. W. Hagen","submitted_at":"2013-10-26T04:24:38Z","abstract_excerpt":"The $\\gamma$-ray strength function of $^{56}$Fe has been measured from proton-$\\gamma$ coincidences for excitation energies up to $\\approx 11$ MeV. The low-energy enhancement in the $\\gamma$-ray strength function, which was first discovered in the ($^3$He,$\\alpha\\gamma$)$^{56}$Fe reaction, is confirmed with the ($p,p^\\prime\\gamma$)$^{56}$Fe experiment reported here. Angular distributions of the $\\gamma$ rays give for the first time evidence that the enhancement is dominated by dipole transitions."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.7070","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"}