{"paper":{"title":"Kinematics of a cascade decay for the precision measurement of $^{29}{\\rm Si}$ binding energy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"nucl-th","authors_text":"K. S. Kim, Yongkyu Ko","submitted_at":"2011-09-09T08:39:29Z","abstract_excerpt":"Comparison of a Penning trap and a flat-crystal spectrometer experiments gives a direct test of $E=mc^2$. The result is $1-\\Delta mc^2/E =(-1.4 \\pm 4.4) \\times 10^{-7}$ for $^{29}{\\rm Si}$ and $^{33}{\\rm S}$. The dominant uncertainty is on the $\\gamma$-ray measurement in neutron capture reactions, and the secondary $\\gamma$-ray has the uncertainty 4.0 eV for $^{29}{\\rm Si}$. We calculated the Doppler effect of the secondary $\\gamma$-ray as $-646.9 \\cos \\theta$ eV from the relativistic energy momentum relation of the $^{28}{\\rm Si}(n,\\gamma)^{29}{\\rm Si}$ reaction. This corresponds to the full "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.1942","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"}