{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:36V3KWVUW4RNKJEHNQFR6HOCCT","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":"12037a5ecd152f1dc0c749c26c858a57f272f7974e61198279568b82053400bb","cross_cats_sorted":["astro-ph.SR","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2023-02-08T17:25:26Z","title_canon_sha256":"322e9053c1f81ab5e83c23471d6ce7d5e2d96f8784efa0f8466494df54698d6f"},"schema_version":"1.0","source":{"id":"2302.04206","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.04206","created_at":"2026-07-05T05:40:01Z"},{"alias_kind":"arxiv_version","alias_value":"2302.04206v1","created_at":"2026-07-05T05:40:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.04206","created_at":"2026-07-05T05:40:01Z"},{"alias_kind":"pith_short_12","alias_value":"36V3KWVUW4RN","created_at":"2026-07-05T05:40:01Z"},{"alias_kind":"pith_short_16","alias_value":"36V3KWVUW4RNKJEH","created_at":"2026-07-05T05:40:01Z"},{"alias_kind":"pith_short_8","alias_value":"36V3KWVU","created_at":"2026-07-05T05:40:01Z"}],"graph_snapshots":[{"event_id":"sha256:f1eae133441afbe998f8bcdc8da2aca8fdee4e556db25ef12885526218935019","target":"graph","created_at":"2026-07-05T05:40:01Z","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/2302.04206/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We describe the earliest measurements of the DT fusion cross section commissioned by the Manhattan Project, first at Purdue University in 1943 and then at Los Alamos 1945-6 and later, in 1951-2. The Los Alamos measurements led to the realization that a 3/2$^+$ resonance in the DT system enhances the fusion cross section by a factor of one hundred at energies relevant to applications. This was a transformational discovery, making the quest for terrestrial fusion energy possible. The earliest measurements were reasonably accurate given the technology of the time and the scarcity of tritium, and ","authors_text":"C. Bates, G. M. Hale, J. B. Wilhelmy, J. P. Lestone, M. B. Chadwick, M. W. Paris, S. A. Andrews, S. W. Finch, W. Tornow","cross_cats":["astro-ph.SR","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2023-02-08T17:25:26Z","title":"The earliest DT nuclear fusion discoveries"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.04206","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":"sha256:86fda86aaa48ad81d6bc1a4e2a6b66aaf987b37dc8c49c98aefcd190f18ccc03","target":"record","created_at":"2026-07-05T05:40:01Z","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":"12037a5ecd152f1dc0c749c26c858a57f272f7974e61198279568b82053400bb","cross_cats_sorted":["astro-ph.SR","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2023-02-08T17:25:26Z","title_canon_sha256":"322e9053c1f81ab5e83c23471d6ce7d5e2d96f8784efa0f8466494df54698d6f"},"schema_version":"1.0","source":{"id":"2302.04206","kind":"arxiv","version":1}},"canonical_sha256":"dfabb55ab4b722d524876c0b1f1dc214f3f2353c29bfbf422d1dc7238e96b574","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dfabb55ab4b722d524876c0b1f1dc214f3f2353c29bfbf422d1dc7238e96b574","first_computed_at":"2026-07-05T05:40:01.990554Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:40:01.990554Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"D9dffpYHERx2jWFJG+BvE9jXZoAIUUEzdMzbeVuF5LGZFJb/law1/JltrwPRwVZF9WLdrHMRNVcO0DcB5JMBCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:40:01.990964Z","signed_message":"canonical_sha256_bytes"},"source_id":"2302.04206","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:86fda86aaa48ad81d6bc1a4e2a6b66aaf987b37dc8c49c98aefcd190f18ccc03","sha256:f1eae133441afbe998f8bcdc8da2aca8fdee4e556db25ef12885526218935019"],"state_sha256":"054ee7f05b680eb69a90c5f3e790ec4347abe4bfbc9d828fa14521e0ba472bbc"}