{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:HI63XXR3W5B74Y676S65OUSSKD","short_pith_number":"pith:HI63XXR3","schema_version":"1.0","canonical_sha256":"3a3dbbde3bb743fe63dff4bdd7525250efb23d025faac44f544ef8436426818a","source":{"kind":"arxiv","id":"1805.10846","version":1},"attestation_state":"computed","paper":{"title":"Linac activation of radioisotopes and underground gammaspectrometric analyses","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.med-ph","authors_text":"Claire Tamburella, Geoffroy Guibert, Jean-Luc Vuilleumier, Patrick Weber","submitted_at":"2018-05-28T10:02:15Z","abstract_excerpt":"After irradiating various medical linac parts with photon beams, we performed underground gamma-ray spectroscopy (GRS) measurements of the samples only a few minutes after the irradiations, in order to observe activated short-lived radioisotopes. Three samples were used: an Elekta Synergy flattening filter never irradiated before, an old flattening filter, unmounted from a linac in 2012 and a tungsten leaf, unmounted from the multileaf collimator (MLC) of the same linac in 2012. All three samples were measured before the irradiations in the underground laboratory of la Vue-des-Alpes.\n  The new"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1805.10846","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2018-05-28T10:02:15Z","cross_cats_sorted":[],"title_canon_sha256":"1281bb216894c5a2334d96a3cfde0ecbfae771c85d5a24590414a22178855549","abstract_canon_sha256":"85f63727127a2e8a98a202e311b22dc9cea8c7e70c93415dcb2bde3bbfc82f20"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:14:51.220441Z","signature_b64":"tL6TvJvg7nPNBiMYfAwj6WX/Mi/j4EWP/NCLqYwG7sTWJ1HgZWTC40FyqYhv19DRv177wrbQvUgXMxBSn5WmBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3a3dbbde3bb743fe63dff4bdd7525250efb23d025faac44f544ef8436426818a","last_reissued_at":"2026-05-18T00:14:51.219713Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:14:51.219713Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Linac activation of radioisotopes and underground gammaspectrometric analyses","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.med-ph","authors_text":"Claire Tamburella, Geoffroy Guibert, Jean-Luc Vuilleumier, Patrick Weber","submitted_at":"2018-05-28T10:02:15Z","abstract_excerpt":"After irradiating various medical linac parts with photon beams, we performed underground gamma-ray spectroscopy (GRS) measurements of the samples only a few minutes after the irradiations, in order to observe activated short-lived radioisotopes. Three samples were used: an Elekta Synergy flattening filter never irradiated before, an old flattening filter, unmounted from a linac in 2012 and a tungsten leaf, unmounted from the multileaf collimator (MLC) of the same linac in 2012. All three samples were measured before the irradiations in the underground laboratory of la Vue-des-Alpes.\n  The new"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.10846","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1805.10846","created_at":"2026-05-18T00:14:51.219805+00:00"},{"alias_kind":"arxiv_version","alias_value":"1805.10846v1","created_at":"2026-05-18T00:14:51.219805+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.10846","created_at":"2026-05-18T00:14:51.219805+00:00"},{"alias_kind":"pith_short_12","alias_value":"HI63XXR3W5B7","created_at":"2026-05-18T12:32:28.185984+00:00"},{"alias_kind":"pith_short_16","alias_value":"HI63XXR3W5B74Y67","created_at":"2026-05-18T12:32:28.185984+00:00"},{"alias_kind":"pith_short_8","alias_value":"HI63XXR3","created_at":"2026-05-18T12:32:28.185984+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/HI63XXR3W5B74Y676S65OUSSKD","json":"https://pith.science/pith/HI63XXR3W5B74Y676S65OUSSKD.json","graph_json":"https://pith.science/api/pith-number/HI63XXR3W5B74Y676S65OUSSKD/graph.json","events_json":"https://pith.science/api/pith-number/HI63XXR3W5B74Y676S65OUSSKD/events.json","paper":"https://pith.science/paper/HI63XXR3"},"agent_actions":{"view_html":"https://pith.science/pith/HI63XXR3W5B74Y676S65OUSSKD","download_json":"https://pith.science/pith/HI63XXR3W5B74Y676S65OUSSKD.json","view_paper":"https://pith.science/paper/HI63XXR3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1805.10846&json=true","fetch_graph":"https://pith.science/api/pith-number/HI63XXR3W5B74Y676S65OUSSKD/graph.json","fetch_events":"https://pith.science/api/pith-number/HI63XXR3W5B74Y676S65OUSSKD/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HI63XXR3W5B74Y676S65OUSSKD/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HI63XXR3W5B74Y676S65OUSSKD/action/storage_attestation","attest_author":"https://pith.science/pith/HI63XXR3W5B74Y676S65OUSSKD/action/author_attestation","sign_citation":"https://pith.science/pith/HI63XXR3W5B74Y676S65OUSSKD/action/citation_signature","submit_replication":"https://pith.science/pith/HI63XXR3W5B74Y676S65OUSSKD/action/replication_record"}},"created_at":"2026-05-18T00:14:51.219805+00:00","updated_at":"2026-05-18T00:14:51.219805+00:00"}