{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:3UIPAQGWZHQAICWGGKNMYGLYTA","short_pith_number":"pith:3UIPAQGW","schema_version":"1.0","canonical_sha256":"dd10f040d6c9e0040ac6329acc1978983f906177d1a5ac70ed2572a6cf6b0dce","source":{"kind":"arxiv","id":"1603.05453","version":3},"attestation_state":"computed","paper":{"title":"On the role of secondary pions in spallation targets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"nucl-th","authors_text":"Alain Boudard, Cristian Massimi, Davide Mancusi, Jean-Christophe David, Jorge Lerendegui-Marco, Joseph Cugnon, Miguel Antonio Cort\\'es-Giraldo, Nicola Colonna, Sergio Lo Meo, Sylvie Leray, Vasilis Vlachoudis","submitted_at":"2016-03-17T12:38:13Z","abstract_excerpt":"We use particle-transport simulations to show that secondary pions play a crucial role for the development of the hadronic cascade and therefore for the production of neutrons and photons from thick spallation targets. In particular, for the n_TOF lead spallation target, irradiated with 20 GeV/c protons, neutral pions are involved in the production of ~90% of the high-energy photons; charged pions participate in ~40% of the integral neutron yield. Nevertheless, photon and neutron yields are shown to be relatively insensitive to large changes of the average pion multiplicity in the individual s"},"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":"1603.05453","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-03-17T12:38:13Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"2f10344f24038bdb4c8685ed8b85894c5ff959d38a6c5395b9d89e8382daa55a","abstract_canon_sha256":"cb68369ca960102f2c0e39e03697a800d6dd55cdbb83bdb385bc5ef50f9b84d5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:44:01.389843Z","signature_b64":"byHgKKRPtFaKmgTREXlnrr4nzj5HQJQNfTgwa5IPgR+x2dqI7SJx86gUXPuE01enW/Ruur0rZsCmuZcJRVpYBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dd10f040d6c9e0040ac6329acc1978983f906177d1a5ac70ed2572a6cf6b0dce","last_reissued_at":"2026-05-18T00:44:01.389302Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:44:01.389302Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On the role of secondary pions in spallation targets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"nucl-th","authors_text":"Alain Boudard, Cristian Massimi, Davide Mancusi, Jean-Christophe David, Jorge Lerendegui-Marco, Joseph Cugnon, Miguel Antonio Cort\\'es-Giraldo, Nicola Colonna, Sergio Lo Meo, Sylvie Leray, Vasilis Vlachoudis","submitted_at":"2016-03-17T12:38:13Z","abstract_excerpt":"We use particle-transport simulations to show that secondary pions play a crucial role for the development of the hadronic cascade and therefore for the production of neutrons and photons from thick spallation targets. In particular, for the n_TOF lead spallation target, irradiated with 20 GeV/c protons, neutral pions are involved in the production of ~90% of the high-energy photons; charged pions participate in ~40% of the integral neutron yield. Nevertheless, photon and neutron yields are shown to be relatively insensitive to large changes of the average pion multiplicity in the individual s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.05453","kind":"arxiv","version":3},"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":"1603.05453","created_at":"2026-05-18T00:44:01.389402+00:00"},{"alias_kind":"arxiv_version","alias_value":"1603.05453v3","created_at":"2026-05-18T00:44:01.389402+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.05453","created_at":"2026-05-18T00:44:01.389402+00:00"},{"alias_kind":"pith_short_12","alias_value":"3UIPAQGWZHQA","created_at":"2026-05-18T12:29:58.707656+00:00"},{"alias_kind":"pith_short_16","alias_value":"3UIPAQGWZHQAICWG","created_at":"2026-05-18T12:29:58.707656+00:00"},{"alias_kind":"pith_short_8","alias_value":"3UIPAQGW","created_at":"2026-05-18T12:29:58.707656+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/3UIPAQGWZHQAICWGGKNMYGLYTA","json":"https://pith.science/pith/3UIPAQGWZHQAICWGGKNMYGLYTA.json","graph_json":"https://pith.science/api/pith-number/3UIPAQGWZHQAICWGGKNMYGLYTA/graph.json","events_json":"https://pith.science/api/pith-number/3UIPAQGWZHQAICWGGKNMYGLYTA/events.json","paper":"https://pith.science/paper/3UIPAQGW"},"agent_actions":{"view_html":"https://pith.science/pith/3UIPAQGWZHQAICWGGKNMYGLYTA","download_json":"https://pith.science/pith/3UIPAQGWZHQAICWGGKNMYGLYTA.json","view_paper":"https://pith.science/paper/3UIPAQGW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1603.05453&json=true","fetch_graph":"https://pith.science/api/pith-number/3UIPAQGWZHQAICWGGKNMYGLYTA/graph.json","fetch_events":"https://pith.science/api/pith-number/3UIPAQGWZHQAICWGGKNMYGLYTA/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3UIPAQGWZHQAICWGGKNMYGLYTA/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3UIPAQGWZHQAICWGGKNMYGLYTA/action/storage_attestation","attest_author":"https://pith.science/pith/3UIPAQGWZHQAICWGGKNMYGLYTA/action/author_attestation","sign_citation":"https://pith.science/pith/3UIPAQGWZHQAICWGGKNMYGLYTA/action/citation_signature","submit_replication":"https://pith.science/pith/3UIPAQGWZHQAICWGGKNMYGLYTA/action/replication_record"}},"created_at":"2026-05-18T00:44:01.389402+00:00","updated_at":"2026-05-18T00:44:01.389402+00:00"}