{"paper":{"title":"Understanding the Low-Energy Enhancement of the $\\gamma$-ray Strength Function of $^{56}$Fe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A.C. Larsen, A.D. Ayangeakaa, A. G\\\"orgen, A.O. Macchiavelli, A.V. Voinov, A. Wiens, C.M. Campbell, D.G. Sarantites, D.L. Bleuel, H.L. Crawford, H.M. Davids, I.Y. Lee, J.E. Kinnison, J. Elson, L.A. Bernstein, L. Kirsch, M. Cromaz, M.D. Jones, M. Guttormsen, M.P. Carpenter, M. Salathe, M. Wiedeking, P. Fallon, R.M. Clark, R.V.F. Janssens, S. Bottoni, S. Siem, S. Zhu, T. Lauritsen, W. Reviol","submitted_at":"2018-01-29T18:53:37Z","abstract_excerpt":"A model-independent technique was used to determine the $\\gamma$-ray Strength Function ($\\gamma$SF) of $^{56}$Fe down to $\\gamma$-ray energies less than 1 MeV for the first time with GRETINA using the $(p,p')$ reaction at 16 MeV. No difference was observed in the energy dependence of the $\\gamma$SF built on $2^{+}$ and $4^{+}$ final states, supporting the Brink hypothesis. In addition, angular distribution and polarization measurements were performed. The angular distributions are consistent with dipole radiation. The polarization results show a small bias towards magnetic character in the reg"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.09668","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"}