{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:F7QSE2SYH2VPOEM7RNHGXGW2NP","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":"61d196e0931a9a0abe3a362140cd7d322373e57e4fa07b22bc35e3854f58b20f","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-12-31T04:50:44Z","title_canon_sha256":"81c6f7b5787e5f392dccee8744182fc5fb9fafdde744f7684efcc847a729cb4e"},"schema_version":"1.0","source":{"id":"1212.6819","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.6819","created_at":"2026-05-18T01:52:22Z"},{"alias_kind":"arxiv_version","alias_value":"1212.6819v1","created_at":"2026-05-18T01:52:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.6819","created_at":"2026-05-18T01:52:22Z"},{"alias_kind":"pith_short_12","alias_value":"F7QSE2SYH2VP","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"F7QSE2SYH2VPOEM7","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"F7QSE2SY","created_at":"2026-05-18T12:27:04Z"}],"graph_snapshots":[{"event_id":"sha256:775317f14213cc14572c6756cfe873b70940dc279d94d10b7506440338bb184a","target":"graph","created_at":"2026-05-18T01:52:22Z","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":"We have devised a technique for measuring some of the most important nuclear reactions in stars which we expect to provide considerable improvement over previous experiments. Adapting ideas from dark matter search experiments with bubble chambers, we have found that a superheated liquid is sensitive to recoils produced from \\gamma-rays photodisintegrating the nuclei of the liquid. The main advantage of the new target-detector system is a gain in yield of six orders of magnitude over conventional gas targets due to the higher mass density of liquids. Also, the detector is practically insensitiv","authors_text":"A. P. Tonchev, A. Robinson, A. Sonnenschein, B. DiGiovine, C. Ugalde, D. Henderson, G. Rusev, K. E. Rehm, R. J. Holt, R. Raut","cross_cats":["nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-12-31T04:50:44Z","title":"First determination of an astrophysical cross section with a bubble chamber: the 15N(\\alpha,\\gamma)19F reaction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.6819","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":"sha256:076803e08aa64d10c9c45afbb05d68fdbfe9f364c1a62ab7e3d45657e4a96bd9","target":"record","created_at":"2026-05-18T01:52:22Z","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":"61d196e0931a9a0abe3a362140cd7d322373e57e4fa07b22bc35e3854f58b20f","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-12-31T04:50:44Z","title_canon_sha256":"81c6f7b5787e5f392dccee8744182fc5fb9fafdde744f7684efcc847a729cb4e"},"schema_version":"1.0","source":{"id":"1212.6819","kind":"arxiv","version":1}},"canonical_sha256":"2fe1226a583eaaf7119f8b4e6b9ada6bebc2b25a588e6b5a3fe1f1227bcd403f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2fe1226a583eaaf7119f8b4e6b9ada6bebc2b25a588e6b5a3fe1f1227bcd403f","first_computed_at":"2026-05-18T01:52:22.700416Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:22.700416Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"epAhjItBgtn+qJyA1ZZde9yHU3mOo8KqcaHPdumkPqvtqo423Sq3itc7ER1vk2jg6oEdMNXbfg7szi0H8kcfCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:22.700820Z","signed_message":"canonical_sha256_bytes"},"source_id":"1212.6819","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:076803e08aa64d10c9c45afbb05d68fdbfe9f364c1a62ab7e3d45657e4a96bd9","sha256:775317f14213cc14572c6756cfe873b70940dc279d94d10b7506440338bb184a"],"state_sha256":"653ac0a930a0d7884e168e7f4569864593bbba726b6ff3648debf166483acc0a"}