{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:VL77QHB6RBGF7XXKS74UTIGULK","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":"2fa3b151932a8d4e2294cd172b16c5dd319667f434f39714abc3b82f2f206693","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-12-26T11:24:32Z","title_canon_sha256":"5b7ecc5197b135e3cb516106ad7f1569be434afd7b6c48b1d8fbacd3db0d001d"},"schema_version":"1.0","source":{"id":"1712.09237","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.09237","created_at":"2026-05-18T00:18:14Z"},{"alias_kind":"arxiv_version","alias_value":"1712.09237v2","created_at":"2026-05-18T00:18:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.09237","created_at":"2026-05-18T00:18:14Z"},{"alias_kind":"pith_short_12","alias_value":"VL77QHB6RBGF","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VL77QHB6RBGF7XXK","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VL77QHB6","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:4063d20bd6045fd101af81c9d778c997ceb30dee9af38438592ec177236c02ce","target":"graph","created_at":"2026-05-18T00:18:14Z","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":"The ability of an intense laser pulse to propagate in a classically over-critical plasma through the phenomenon of relativistic transparency is shown to facilitate the generation of strong plasma magnetic fields. Particle-in-cell simulations demonstrate that these fields significantly enhance the radiation rates of the laser-irradiated electrons, and furthermore they collimate the emission so that a directed and dense beam of multi-MeV gamma-rays is achievable. This capability can be exploited for electron-positron pair production via the linear Breit-Wheeler process by colliding two such dens","authors_text":"Alexey Arefiev, David Stark, Oliver Jansen, Tao Wang, Toma Toncian","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-12-26T11:24:32Z","title":"Leveraging extreme laser-driven magnetic fields for gamma-ray generation and pair production"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.09237","kind":"arxiv","version":2},"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":"sha256:99ff143690ddd2053f8a797dbe41b5eb379b1403457e91b3468655a901be447c","target":"record","created_at":"2026-05-18T00:18:14Z","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":"2fa3b151932a8d4e2294cd172b16c5dd319667f434f39714abc3b82f2f206693","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-12-26T11:24:32Z","title_canon_sha256":"5b7ecc5197b135e3cb516106ad7f1569be434afd7b6c48b1d8fbacd3db0d001d"},"schema_version":"1.0","source":{"id":"1712.09237","kind":"arxiv","version":2}},"canonical_sha256":"aafff81c3e884c5fdeea97f949a0d45a8780a6991737e31609ccde80810f1ca1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aafff81c3e884c5fdeea97f949a0d45a8780a6991737e31609ccde80810f1ca1","first_computed_at":"2026-05-18T00:18:14.239100Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:18:14.239100Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"b2SzU9i4JdUlui09aGd8q/ddHIR9Bx6zjsk1ODyyjFBiHQIXgtkoegCHFM5bpU5aiwNhnJ1mylM6q+d62ec+DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:18:14.239839Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.09237","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:99ff143690ddd2053f8a797dbe41b5eb379b1403457e91b3468655a901be447c","sha256:4063d20bd6045fd101af81c9d778c997ceb30dee9af38438592ec177236c02ce"],"state_sha256":"4a40dd8159723df338a9dd2602bad90aa144957ed6f3b8ff0d70f3689b7056f8"}