{"paper":{"title":"Measurement of low energy ionization signals from Compton scattering in a CCD dark matter detector","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.IM","hep-ex"],"primary_cat":"physics.ins-det","authors_text":"A.E. Chavarria, A. Kavner, A. Matalon, D. Amidei, J. Estrada, J. Molina, J. Tiffenberg, K. Ramanathan, P. Privitera, R. Thomas, T.-L. Chou","submitted_at":"2017-06-19T16:54:38Z","abstract_excerpt":"An important source of background in direct searches for low-mass dark matter particles are the energy deposits by small-angle scattering of environmental $\\gamma$ rays. We report detailed measurements of low-energy spectra from Compton scattering of $\\gamma$ rays in the bulk silicon of a charge-coupled device (CCD). Electron recoils produced by $\\gamma$ rays from $^{57}$Co and $^{241}$Am radioactive sources are measured between 60 eV and 4 keV. The observed spectra agree qualitatively with theoretical predictions, and characteristic spectral features associated with the atomic structure of th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.06053","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"}