{"paper":{"title":"Direct observation of the decay of first excited Hoyle state in $^{12}$C","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"nucl-ex","authors_text":"A. Dey, C. Bhattacharya, G. Mukherjee, G. Prajapati, H. Pai, J. K. Meena, K. Banerjee, M. Biswas, M. Gohil, P. Roy, R. Pandey, S. Bhattacharya, S. Kundu, T. K. Ghosh, T. K. Rana","submitted_at":"2012-03-15T12:02:52Z","abstract_excerpt":"An excited state of $^{12}$C having excitation energy E$_x \\sim$ 9.65 $\\pm$ 0.02 MeV and width (FWHM) $\\sim607\\pm$ 55 keV, which decays to three $ \\alpha $-particles via Hoyle state ($E_x \\sim$ 7.65 MeV), has been directly identified for the first time in the exclusive inelastic scattering of 60 MeV $^{4}$He on $^{12}$C, measured in coincidence with the recoiling $^{12}$C$ ^* $ Hoyle state (decaying mostly as $^{12}$C$ ^* $ $\\rightarrow \\ ^{8} $Be + $ \\alpha $ $\\rightarrow \\ \\alpha + \\alpha + \\alpha$) by event-by-event kinematic reconstruction of the completely detected (4$ \\alpha $) events. T"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.3336","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"}