{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:JW2ULGTRIDZ3T5V65QIYU2KPKI","short_pith_number":"pith:JW2ULGTR","canonical_record":{"source":{"id":"2202.04853","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2022-02-10T05:58:41Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"5e256da170fa16d9b1d8128b54151a52778fa02256bf2c89e811166709e5e26f","abstract_canon_sha256":"d51d6f8c0d4d50758cd4b0d9ad58549fd553fbfca2f38ea650b2f44bf1f6d516"},"schema_version":"1.0"},"canonical_sha256":"4db5459a7140f3b9f6beec118a694f521b1e9f41cf7dfef05f050c09e5381ba8","source":{"kind":"arxiv","id":"2202.04853","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.04853","created_at":"2026-07-05T03:55:54Z"},{"alias_kind":"arxiv_version","alias_value":"2202.04853v1","created_at":"2026-07-05T03:55:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.04853","created_at":"2026-07-05T03:55:54Z"},{"alias_kind":"pith_short_12","alias_value":"JW2ULGTRIDZ3","created_at":"2026-07-05T03:55:54Z"},{"alias_kind":"pith_short_16","alias_value":"JW2ULGTRIDZ3T5V6","created_at":"2026-07-05T03:55:54Z"},{"alias_kind":"pith_short_8","alias_value":"JW2ULGTR","created_at":"2026-07-05T03:55:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:JW2ULGTRIDZ3T5V65QIYU2KPKI","target":"record","payload":{"canonical_record":{"source":{"id":"2202.04853","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2022-02-10T05:58:41Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"5e256da170fa16d9b1d8128b54151a52778fa02256bf2c89e811166709e5e26f","abstract_canon_sha256":"d51d6f8c0d4d50758cd4b0d9ad58549fd553fbfca2f38ea650b2f44bf1f6d516"},"schema_version":"1.0"},"canonical_sha256":"4db5459a7140f3b9f6beec118a694f521b1e9f41cf7dfef05f050c09e5381ba8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:55:54.850202Z","signature_b64":"/6WZpPZv8hOy6E94F78hMhXhQHXRnI4B4f4ZmbIj2CjkQ6deBBVkchpr+pWEZ6THLx08x1T2fazLXOkeE+RTCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4db5459a7140f3b9f6beec118a694f521b1e9f41cf7dfef05f050c09e5381ba8","last_reissued_at":"2026-07-05T03:55:54.849760Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:55:54.849760Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2202.04853","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":"2026-07-05T03:55:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wDk5wwunypvZuXi0cHyXU9y04CpNpKWSoEqUMBxQtxFMTTTR5BxVAq+Y83Cqbfow7bsf7Dmh8RKbSbYIZIk1Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T23:25:47.707096Z"},"content_sha256":"4bf1c23ad14ddc3052be506d6a359305c49e0f7da28e84c42cb242fd09408649","schema_version":"1.0","event_id":"sha256:4bf1c23ad14ddc3052be506d6a359305c49e0f7da28e84c42cb242fd09408649"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:JW2ULGTRIDZ3T5V65QIYU2KPKI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Maximizing MeV x-ray dose in relativistic laser-solid interactions","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.plasm-ph","authors_text":"Andreas J. Kemp, Dean R. Rusby, Kyle G. Miller, Scott C. Wilks, Warren B. Mori","submitted_at":"2022-02-10T05:58:41Z","abstract_excerpt":"Bremsstrahlung x-rays generated in laser-solid interactions can be used as light sources for high-energy-density science. We present electron and x-ray spectra from particle-in-cell and Monte Carlo simulations, varying laser pulse intensity and duration at fixed energy of 200$\\,$J. Superponderomotive electron temperatures are observed at low intensity; a new temperature scaling is given that depends on pulse duration and density scale length. Short, high-intensity pulses create low-divergence electron beams before self-generated magnetic fields evolve, resulting in more forward-going MeV x-ray"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.04853","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/2202.04853/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":"2026-07-05T03:55:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+F89DHXMHe9nUR+L+LZzJ0FKhAsD3fWuQHTZWzL38MItqIMS8BLIVwdqWVCN0Dy5bkVUpSFMOJnr/L8cPTOBAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T23:25:47.707623Z"},"content_sha256":"415583eae36ac3bd98bf1346d3f232d0a7f020b3ec6a88a72f904bfcd8369866","schema_version":"1.0","event_id":"sha256:415583eae36ac3bd98bf1346d3f232d0a7f020b3ec6a88a72f904bfcd8369866"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JW2ULGTRIDZ3T5V65QIYU2KPKI/bundle.json","state_url":"https://pith.science/pith/JW2ULGTRIDZ3T5V65QIYU2KPKI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JW2ULGTRIDZ3T5V65QIYU2KPKI/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":"2026-08-22T23:25:47Z","links":{"resolver":"https://pith.science/pith/JW2ULGTRIDZ3T5V65QIYU2KPKI","bundle":"https://pith.science/pith/JW2ULGTRIDZ3T5V65QIYU2KPKI/bundle.json","state":"https://pith.science/pith/JW2ULGTRIDZ3T5V65QIYU2KPKI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JW2ULGTRIDZ3T5V65QIYU2KPKI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:JW2ULGTRIDZ3T5V65QIYU2KPKI","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":"d51d6f8c0d4d50758cd4b0d9ad58549fd553fbfca2f38ea650b2f44bf1f6d516","cross_cats_sorted":["physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2022-02-10T05:58:41Z","title_canon_sha256":"5e256da170fa16d9b1d8128b54151a52778fa02256bf2c89e811166709e5e26f"},"schema_version":"1.0","source":{"id":"2202.04853","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.04853","created_at":"2026-07-05T03:55:54Z"},{"alias_kind":"arxiv_version","alias_value":"2202.04853v1","created_at":"2026-07-05T03:55:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.04853","created_at":"2026-07-05T03:55:54Z"},{"alias_kind":"pith_short_12","alias_value":"JW2ULGTRIDZ3","created_at":"2026-07-05T03:55:54Z"},{"alias_kind":"pith_short_16","alias_value":"JW2ULGTRIDZ3T5V6","created_at":"2026-07-05T03:55:54Z"},{"alias_kind":"pith_short_8","alias_value":"JW2ULGTR","created_at":"2026-07-05T03:55:54Z"}],"graph_snapshots":[{"event_id":"sha256:415583eae36ac3bd98bf1346d3f232d0a7f020b3ec6a88a72f904bfcd8369866","target":"graph","created_at":"2026-07-05T03:55:54Z","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/2202.04853/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Bremsstrahlung x-rays generated in laser-solid interactions can be used as light sources for high-energy-density science. We present electron and x-ray spectra from particle-in-cell and Monte Carlo simulations, varying laser pulse intensity and duration at fixed energy of 200$\\,$J. Superponderomotive electron temperatures are observed at low intensity; a new temperature scaling is given that depends on pulse duration and density scale length. Short, high-intensity pulses create low-divergence electron beams before self-generated magnetic fields evolve, resulting in more forward-going MeV x-ray","authors_text":"Andreas J. Kemp, Dean R. Rusby, Kyle G. Miller, Scott C. Wilks, Warren B. Mori","cross_cats":["physics.comp-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2022-02-10T05:58:41Z","title":"Maximizing MeV x-ray dose in relativistic laser-solid interactions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.04853","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":"sha256:4bf1c23ad14ddc3052be506d6a359305c49e0f7da28e84c42cb242fd09408649","target":"record","created_at":"2026-07-05T03:55:54Z","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":"d51d6f8c0d4d50758cd4b0d9ad58549fd553fbfca2f38ea650b2f44bf1f6d516","cross_cats_sorted":["physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2022-02-10T05:58:41Z","title_canon_sha256":"5e256da170fa16d9b1d8128b54151a52778fa02256bf2c89e811166709e5e26f"},"schema_version":"1.0","source":{"id":"2202.04853","kind":"arxiv","version":1}},"canonical_sha256":"4db5459a7140f3b9f6beec118a694f521b1e9f41cf7dfef05f050c09e5381ba8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4db5459a7140f3b9f6beec118a694f521b1e9f41cf7dfef05f050c09e5381ba8","first_computed_at":"2026-07-05T03:55:54.849760Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:55:54.849760Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/6WZpPZv8hOy6E94F78hMhXhQHXRnI4B4f4ZmbIj2CjkQ6deBBVkchpr+pWEZ6THLx08x1T2fazLXOkeE+RTCA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:55:54.850202Z","signed_message":"canonical_sha256_bytes"},"source_id":"2202.04853","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4bf1c23ad14ddc3052be506d6a359305c49e0f7da28e84c42cb242fd09408649","sha256:415583eae36ac3bd98bf1346d3f232d0a7f020b3ec6a88a72f904bfcd8369866"],"state_sha256":"a300fd73a254526773fdc4e63749dd351dc13df4a8a35e27ff04b16534aad2f4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"433fkkjo9MjsiaxhgiFVexRwXfOOE1p8fHapuCVL0FWVbW1BlQGNLGYUnNCpq6s+5paM1pU4/SNGmZooyUMcBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T23:25:47.711841Z","bundle_sha256":"ade67830c4464a67ce0ff34882376f1f8169251faefc4ec6cf779cbbfeb4bc6f"}}