{"paper":{"title":"The Nuclear Matter Symmetry Energy at $0.03\\leq \\rho/\\rho_0\\leq 0.2$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Bonasera, C. Bottosso, D. Fabris, G. Nebbia, G. Prete, G. R\\\"opke, G. Viesti, H. Zheng, J. B. Natowitz, J. Wang, K. Hagel, K. Schmidt, L. Qin, M. Barbui, M. Cinausero, M. Huang, M. Lunardon, M. R. D. Rodrigues, R. Wada, S. Kowalski, S. Moretto, S. Pesente, S. Shlomo, S. Typel, T. Keutgen, V. Rizzi, Y. El Masri, Z. Chen, Z. Majka","submitted_at":"2011-10-14T21:07:43Z","abstract_excerpt":"Measurements of the density dependence of the free symmetry energy in low density clustered matter have been extended using the NIMROD multi-detector at Texas A&M University. Thermal coalescence models were employed to extract densities, $\\rho$, and temperatures, $T$, for evolving systems formed in collisions of 47 $A$ MeV $^{40}$Ar + $^{112}$Sn,$^{124}$Sn and $^{64}$Zn + $^{112}$Sn, $^{124}$Sn. Densities of $0.03 \\leq \\rho/\\rho_0 \\leq 0.2$ and temperatures in the range 5 to 10 MeV have been sampled. The free symmetry energy coefficients are found to be in good agreement with values calculated"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.3341","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"}