{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:E2PGAI3W4LVO6XVM37Y5PQLLKF","short_pith_number":"pith:E2PGAI3W","schema_version":"1.0","canonical_sha256":"269e602376e2eaef5eacdff1d7c16b514ad58512648e9addc0edeb944dcef720","source":{"kind":"arxiv","id":"1807.07845","version":2},"attestation_state":"computed","paper":{"title":"Enhanced betatron-radiation energy using two collinear laser pulses","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"Andreas Lehrach, J\\\"urgen B\\\"oker, Markus B\\\"uscher, Paul Gibbon, Zahra M. Chitgar","submitted_at":"2018-07-20T14:00:18Z","abstract_excerpt":"A new self-injection scheme is proposed for the laser wakefield accelerator in the nonlinear (cavity) regime using a pair of matched, copropagating laser pulses which yields a pC electron bunch. By tuning their relative delay and intensity, the subsequent betatron radiation energy can be considerably $(\\times 3)$ enhanced compared to the single pulse scheme for the same total energy. A new condition for the optimal bubble size is derived and verified by particle-in-cell simulations, demonstrating the advantages of the double-pulse scheme for self-injection."},"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":"1807.07845","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2018-07-20T14:00:18Z","cross_cats_sorted":[],"title_canon_sha256":"632bb977f69fe86d3fb826276a0d4f2258c9e9c35196d06047b683da4f1a34c3","abstract_canon_sha256":"4d7bd2c1c9b41756daa4e8211ee568727daf6eb768818db2fc69214a73c639c2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:10:09.673782Z","signature_b64":"LvH9EiBdZoYD1z1Ah76iKjMCh7d4xEhMYcfE9LsHOHVc4MWhzBYHQNR7HZj2UR3CosOeRrSXAgdY+doKfDLIAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"269e602376e2eaef5eacdff1d7c16b514ad58512648e9addc0edeb944dcef720","last_reissued_at":"2026-05-18T00:10:09.673131Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:10:09.673131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Enhanced betatron-radiation energy using two collinear laser pulses","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"Andreas Lehrach, J\\\"urgen B\\\"oker, Markus B\\\"uscher, Paul Gibbon, Zahra M. Chitgar","submitted_at":"2018-07-20T14:00:18Z","abstract_excerpt":"A new self-injection scheme is proposed for the laser wakefield accelerator in the nonlinear (cavity) regime using a pair of matched, copropagating laser pulses which yields a pC electron bunch. By tuning their relative delay and intensity, the subsequent betatron radiation energy can be considerably $(\\times 3)$ enhanced compared to the single pulse scheme for the same total energy. A new condition for the optimal bubble size is derived and verified by particle-in-cell simulations, demonstrating the advantages of the double-pulse scheme for self-injection."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.07845","kind":"arxiv","version":2},"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":"1807.07845","created_at":"2026-05-18T00:10:09.673227+00:00"},{"alias_kind":"arxiv_version","alias_value":"1807.07845v2","created_at":"2026-05-18T00:10:09.673227+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.07845","created_at":"2026-05-18T00:10:09.673227+00:00"},{"alias_kind":"pith_short_12","alias_value":"E2PGAI3W4LVO","created_at":"2026-05-18T12:32:19.392346+00:00"},{"alias_kind":"pith_short_16","alias_value":"E2PGAI3W4LVO6XVM","created_at":"2026-05-18T12:32:19.392346+00:00"},{"alias_kind":"pith_short_8","alias_value":"E2PGAI3W","created_at":"2026-05-18T12:32:19.392346+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/E2PGAI3W4LVO6XVM37Y5PQLLKF","json":"https://pith.science/pith/E2PGAI3W4LVO6XVM37Y5PQLLKF.json","graph_json":"https://pith.science/api/pith-number/E2PGAI3W4LVO6XVM37Y5PQLLKF/graph.json","events_json":"https://pith.science/api/pith-number/E2PGAI3W4LVO6XVM37Y5PQLLKF/events.json","paper":"https://pith.science/paper/E2PGAI3W"},"agent_actions":{"view_html":"https://pith.science/pith/E2PGAI3W4LVO6XVM37Y5PQLLKF","download_json":"https://pith.science/pith/E2PGAI3W4LVO6XVM37Y5PQLLKF.json","view_paper":"https://pith.science/paper/E2PGAI3W","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1807.07845&json=true","fetch_graph":"https://pith.science/api/pith-number/E2PGAI3W4LVO6XVM37Y5PQLLKF/graph.json","fetch_events":"https://pith.science/api/pith-number/E2PGAI3W4LVO6XVM37Y5PQLLKF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/E2PGAI3W4LVO6XVM37Y5PQLLKF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/E2PGAI3W4LVO6XVM37Y5PQLLKF/action/storage_attestation","attest_author":"https://pith.science/pith/E2PGAI3W4LVO6XVM37Y5PQLLKF/action/author_attestation","sign_citation":"https://pith.science/pith/E2PGAI3W4LVO6XVM37Y5PQLLKF/action/citation_signature","submit_replication":"https://pith.science/pith/E2PGAI3W4LVO6XVM37Y5PQLLKF/action/replication_record"}},"created_at":"2026-05-18T00:10:09.673227+00:00","updated_at":"2026-05-18T00:10:09.673227+00:00"}