{"paper":{"title":"New limits on $2\\varepsilon$, $\\varepsilon\\beta^+$ and $2\\beta^+$ decay of $^{136}$Ce and $^{138}$Ce with deeply purified cerium sample","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Incicchitti, B.N. Kropivyansky, F.A. Danevich, F. Cappella, M. Laubenstein, O.G. Polischuk, P. Belli, R. Bernabei, R. Cerulli, R.S. Boiko, V.I.Tretyak, V.M. Mokina","submitted_at":"2017-08-31T09:04:29Z","abstract_excerpt":"A search for double electron capture ($2\\varepsilon$), electron capture with positron emission ($\\varepsilon\\beta^+$), and double positron emission $2\\beta^+$) in $^{136}$Ce and $^{138}$Ce was realized with a 465 cm$^3$ ultra-low background HP Ge $\\gamma$ spectrometer over 2299 h at the Gran Sasso underground laboratory. A 627 g sample of cerium oxide deeply purified by liquid-liquid extraction method was used as a source of $\\gamma$ quanta expected in double $\\beta$ decay of the cerium isotopes. New improved half-life limits were set on different modes and channels of double $\\beta$ decay of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.09621","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1708.09621/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}