{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1992:SBMWKQIPPGHL4D3XXYQ3F23D3L","short_pith_number":"pith:SBMWKQIP","canonical_record":{"source":{"id":"nucl-th/9210004","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"1992-10-04T17:14:33Z","cross_cats_sorted":[],"title_canon_sha256":"313e4870b51f259591074153e5f216fa42c49ed03c7341c41c91c74b1010b071","abstract_canon_sha256":"92680bb4ea950ec7a27dc76873dfe7290e328cec9469f78a06c717be207f6640"},"schema_version":"1.0"},"canonical_sha256":"905965410f798ebe0f77be21b2eb63daea196d658076e84452c721aec2d99879","source":{"kind":"arxiv","id":"nucl-th/9210004","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/9210004","created_at":"2026-07-04T15:23:58Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9210004v1","created_at":"2026-07-04T15:23:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9210004","created_at":"2026-07-04T15:23:58Z"},{"alias_kind":"pith_short_12","alias_value":"SBMWKQIPPGHL","created_at":"2026-07-04T15:23:58Z"},{"alias_kind":"pith_short_16","alias_value":"SBMWKQIPPGHL4D3X","created_at":"2026-07-04T15:23:58Z"},{"alias_kind":"pith_short_8","alias_value":"SBMWKQIP","created_at":"2026-07-04T15:23:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1992:SBMWKQIPPGHL4D3XXYQ3F23D3L","target":"record","payload":{"canonical_record":{"source":{"id":"nucl-th/9210004","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"1992-10-04T17:14:33Z","cross_cats_sorted":[],"title_canon_sha256":"313e4870b51f259591074153e5f216fa42c49ed03c7341c41c91c74b1010b071","abstract_canon_sha256":"92680bb4ea950ec7a27dc76873dfe7290e328cec9469f78a06c717be207f6640"},"schema_version":"1.0"},"canonical_sha256":"905965410f798ebe0f77be21b2eb63daea196d658076e84452c721aec2d99879","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:23:58.784112Z","signature_b64":"4U1/MX/So/O3Vyzj1nc1qEUNU2tNucDOLOsdfZ2PWRGXFX4PocdIO3wWFFKI2MfrlLOEgYmc33YV8wF9nckyBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"905965410f798ebe0f77be21b2eb63daea196d658076e84452c721aec2d99879","last_reissued_at":"2026-07-04T15:23:58.783684Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:23:58.783684Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nucl-th/9210004","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:23:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q2Yzi0iXrip1E/B2eIVHgfFZqUQv5PPtuEMnlCSAUcJ4ZU1UyJRKeavb8MYDigWGaBgbyKX88lvnku5maO8WDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T00:30:46.687745Z"},"content_sha256":"6fbc94963b6fabdcd417cb62407869b2b8db2f0fa2174594c4976464bce84fa7","schema_version":"1.0","event_id":"sha256:6fbc94963b6fabdcd417cb62407869b2b8db2f0fa2174594c4976464bce84fa7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1992:SBMWKQIPPGHL4D3XXYQ3F23D3L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quadrupole Contribution to Two Neutron Removal in Heavy Ion Collisions","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"C.J. Benesh","submitted_at":"1992-10-04T17:14:33Z","abstract_excerpt":"In this report, electric quadrupole corrections to the two neutron removal cross section measured in heavy ion collisions are estimated for $^{197}$Au and $^{59}$Co targets. The quadrupole process is assumed to proceed primarily through excitation of the giant isovector quadrupole resonance, which then decays by neutron emission. For $^{59}$Co, the contribution from E2 radiation is found to be small, while for $^{197}$Au we find the quadrupole contribution resolves the discrepancy between experiment and the simple predictions of the Weissacker-Williams virtual photon method."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9210004","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/nucl-th/9210004/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:23:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z+y6bhDuBoSBWS8PEK9EVB66EAYKriCtVegz1oqCoflBWRPuZ515GpTGelZBvZAj9dT3vbab5gTbxigVReTZDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T00:30:46.688127Z"},"content_sha256":"3a507d39c76ad879b6da2f09bf2435b11df89b9b3bdcf547ad1ba0fcd70ccc18","schema_version":"1.0","event_id":"sha256:3a507d39c76ad879b6da2f09bf2435b11df89b9b3bdcf547ad1ba0fcd70ccc18"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SBMWKQIPPGHL4D3XXYQ3F23D3L/bundle.json","state_url":"https://pith.science/pith/SBMWKQIPPGHL4D3XXYQ3F23D3L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SBMWKQIPPGHL4D3XXYQ3F23D3L/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-05T00:30:46Z","links":{"resolver":"https://pith.science/pith/SBMWKQIPPGHL4D3XXYQ3F23D3L","bundle":"https://pith.science/pith/SBMWKQIPPGHL4D3XXYQ3F23D3L/bundle.json","state":"https://pith.science/pith/SBMWKQIPPGHL4D3XXYQ3F23D3L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SBMWKQIPPGHL4D3XXYQ3F23D3L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1992:SBMWKQIPPGHL4D3XXYQ3F23D3L","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":"92680bb4ea950ec7a27dc76873dfe7290e328cec9469f78a06c717be207f6640","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"1992-10-04T17:14:33Z","title_canon_sha256":"313e4870b51f259591074153e5f216fa42c49ed03c7341c41c91c74b1010b071"},"schema_version":"1.0","source":{"id":"nucl-th/9210004","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/9210004","created_at":"2026-07-04T15:23:58Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9210004v1","created_at":"2026-07-04T15:23:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9210004","created_at":"2026-07-04T15:23:58Z"},{"alias_kind":"pith_short_12","alias_value":"SBMWKQIPPGHL","created_at":"2026-07-04T15:23:58Z"},{"alias_kind":"pith_short_16","alias_value":"SBMWKQIPPGHL4D3X","created_at":"2026-07-04T15:23:58Z"},{"alias_kind":"pith_short_8","alias_value":"SBMWKQIP","created_at":"2026-07-04T15:23:58Z"}],"graph_snapshots":[{"event_id":"sha256:3a507d39c76ad879b6da2f09bf2435b11df89b9b3bdcf547ad1ba0fcd70ccc18","target":"graph","created_at":"2026-07-04T15:23:58Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/nucl-th/9210004/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this report, electric quadrupole corrections to the two neutron removal cross section measured in heavy ion collisions are estimated for $^{197}$Au and $^{59}$Co targets. The quadrupole process is assumed to proceed primarily through excitation of the giant isovector quadrupole resonance, which then decays by neutron emission. For $^{59}$Co, the contribution from E2 radiation is found to be small, while for $^{197}$Au we find the quadrupole contribution resolves the discrepancy between experiment and the simple predictions of the Weissacker-Williams virtual photon method.","authors_text":"C.J. Benesh","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"1992-10-04T17:14:33Z","title":"Quadrupole Contribution to Two Neutron Removal in Heavy Ion Collisions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9210004","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":"sha256:6fbc94963b6fabdcd417cb62407869b2b8db2f0fa2174594c4976464bce84fa7","target":"record","created_at":"2026-07-04T15:23:58Z","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":"92680bb4ea950ec7a27dc76873dfe7290e328cec9469f78a06c717be207f6640","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"1992-10-04T17:14:33Z","title_canon_sha256":"313e4870b51f259591074153e5f216fa42c49ed03c7341c41c91c74b1010b071"},"schema_version":"1.0","source":{"id":"nucl-th/9210004","kind":"arxiv","version":1}},"canonical_sha256":"905965410f798ebe0f77be21b2eb63daea196d658076e84452c721aec2d99879","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"905965410f798ebe0f77be21b2eb63daea196d658076e84452c721aec2d99879","first_computed_at":"2026-07-04T15:23:58.783684Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:23:58.783684Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4U1/MX/So/O3Vyzj1nc1qEUNU2tNucDOLOsdfZ2PWRGXFX4PocdIO3wWFFKI2MfrlLOEgYmc33YV8wF9nckyBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:23:58.784112Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/9210004","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6fbc94963b6fabdcd417cb62407869b2b8db2f0fa2174594c4976464bce84fa7","sha256:3a507d39c76ad879b6da2f09bf2435b11df89b9b3bdcf547ad1ba0fcd70ccc18"],"state_sha256":"d12589e6ff393401f86580624f1cbd17afc5fc8d6334cb89487d9591019c63f3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XOdRv7E6lkD+ldppAi5iVHgNxBKwPTZI4sMguw6+5E7wkUkUMQCHN7p+Je1G4wev85K/SoorDBsJYWz890FKCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T00:30:46.690084Z","bundle_sha256":"b266fafb632f84c92a0da05aa272f8eb6f07148b5e7dcd353713283e2ce874b0"}}