{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:7YSUKIHJ7YCOWXNDCNKYFPZQIN","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"8d524d7766c3bce01f250db047777423462ad0bdf8417293083e775ff7e1b014","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-06-10T21:56:13Z","title_canon_sha256":"6f082736b030041f8390ba1c640047a0aae05133b406a3d6101cd7afec52445e"},"schema_version":"1.0","source":{"id":"1806.03732","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.03732","created_at":"2026-05-18T00:13:42Z"},{"alias_kind":"arxiv_version","alias_value":"1806.03732v1","created_at":"2026-05-18T00:13:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.03732","created_at":"2026-05-18T00:13:42Z"},{"alias_kind":"pith_short_12","alias_value":"7YSUKIHJ7YCO","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"7YSUKIHJ7YCOWXND","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"7YSUKIHJ","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:2144af686f2cf3410485ae830148dfda8e0639df832b5b0a5df882b456ba3105","target":"graph","created_at":"2026-05-18T00:13:42Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"On the last SATIF a comparison between the measured activities of the polonium isotopes Po-208, Po-209 and Po-210 and the simulated results using MCNPX2.7.0 was presented. The lead samples were cut from the SINQ spallation target at the Paul Scherrer Institut (PSI) and irradiated in 2000/2001 by 575 MeV protons. The Po-isotopes were separated using radiochemical methods by the group of D. Schumann at PSI and measured. Choosing the default model in MCNPX, Bertini-Dresner, the prediction underestimated the measured activities by up to several orders of magnitude. Therefore the Li\\`ege intranucle","authors_text":"Alfredo Ferrari, Daniela Kiselev, Jean-Christophe Davide, Michael Wohlmuther, Tatsumi Koi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-06-10T21:56:13Z","title":"Po-production in lead: A benchmark between Geant4, FLUKA and MCNPX"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.03732","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:5d717b4eda9cd90f6db7f80dec834568223ccdf5fc5e0b5c0cb93be37f29b8ed","target":"record","created_at":"2026-05-18T00:13:42Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"8d524d7766c3bce01f250db047777423462ad0bdf8417293083e775ff7e1b014","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-06-10T21:56:13Z","title_canon_sha256":"6f082736b030041f8390ba1c640047a0aae05133b406a3d6101cd7afec52445e"},"schema_version":"1.0","source":{"id":"1806.03732","kind":"arxiv","version":1}},"canonical_sha256":"fe254520e9fe04eb5da3135582bf3043519a7991cec4afbbf6bfd187048b358a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fe254520e9fe04eb5da3135582bf3043519a7991cec4afbbf6bfd187048b358a","first_computed_at":"2026-05-18T00:13:42.197885Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:13:42.197885Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vV1+JWibdEHrt5XCZxBLxbmlEJWSrswP41UbpMkoNcriqGXTBT+tojRklpt0eYIsfS0eF0+0Y9JPbSTututhBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:13:42.198651Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.03732","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5d717b4eda9cd90f6db7f80dec834568223ccdf5fc5e0b5c0cb93be37f29b8ed","sha256:2144af686f2cf3410485ae830148dfda8e0639df832b5b0a5df882b456ba3105"],"state_sha256":"457c630f5b31157493ba4f4e18a2424e8812d44336e16b18e20cbf2226e5916f"}