{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:DMRUU2H3Q2KDGR5DH4ICV5ZMMH","short_pith_number":"pith:DMRUU2H3","canonical_record":{"source":{"id":"1701.05682","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-01-20T04:17:31Z","cross_cats_sorted":[],"title_canon_sha256":"21d41a68153a588853a73ac1eb32600a062208679ef66ab5db593cea020ebb61","abstract_canon_sha256":"70a82c5dab90c9ebc59ed11ddf0d7c9bca3d7d812b86dbc69a6acd8080b9143b"},"schema_version":"1.0"},"canonical_sha256":"1b234a68fb86943347a33f102af72c61f7a8ce7ccb017f87dc483c208649df8d","source":{"kind":"arxiv","id":"1701.05682","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.05682","created_at":"2026-05-18T00:40:30Z"},{"alias_kind":"arxiv_version","alias_value":"1701.05682v1","created_at":"2026-05-18T00:40:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.05682","created_at":"2026-05-18T00:40:30Z"},{"alias_kind":"pith_short_12","alias_value":"DMRUU2H3Q2KD","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"DMRUU2H3Q2KDGR5D","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"DMRUU2H3","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:DMRUU2H3Q2KDGR5DH4ICV5ZMMH","target":"record","payload":{"canonical_record":{"source":{"id":"1701.05682","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-01-20T04:17:31Z","cross_cats_sorted":[],"title_canon_sha256":"21d41a68153a588853a73ac1eb32600a062208679ef66ab5db593cea020ebb61","abstract_canon_sha256":"70a82c5dab90c9ebc59ed11ddf0d7c9bca3d7d812b86dbc69a6acd8080b9143b"},"schema_version":"1.0"},"canonical_sha256":"1b234a68fb86943347a33f102af72c61f7a8ce7ccb017f87dc483c208649df8d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:40:30.752131Z","signature_b64":"W0auWFxFJCeEiIg0e4taFY0xxt9vWJ5kq9IvlI2X9aUAev2ggQk/M1YFNHUurMWMp9mizF22SpeNtv8efexwBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1b234a68fb86943347a33f102af72c61f7a8ce7ccb017f87dc483c208649df8d","last_reissued_at":"2026-05-18T00:40:30.751677Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:40:30.751677Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.05682","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":"2026-05-18T00:40:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qMn+h5XaBsnI1RNAs+s4saeIekzc64JekhCr9c1WAmMaMkWkwYAwejgHep6GjE/yeQfAXr2M1Aw1aQWzGT8OBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:03:07.029510Z"},"content_sha256":"e6059b629f126f695e70a3b995a3c199b9084411a4c909b4cda22bbab9dfe64e","schema_version":"1.0","event_id":"sha256:e6059b629f126f695e70a3b995a3c199b9084411a4c909b4cda22bbab9dfe64e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:DMRUU2H3Q2KDGR5DH4ICV5ZMMH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Laser opacity in underdense preplasma of solid targets due to quantum electrodynamics effects","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"J. Zhang, P. Gibbon, W.-M. Wang, Y.-T. Li, Z.-M. Sheng","submitted_at":"2017-01-20T04:17:31Z","abstract_excerpt":"We investigate how next-generation laser pulses at 10 PW $-$ 200 PW interact with a solid target in the presence of a relativistically underdense preplasma produced by amplified spontaneous emission (ASE). Laser hole boring and relativistic transparency are strongly restrained due to the generation of electron-positron pairs and $\\gamma$-ray photons via quantum electrodynamics (QED) processes. A pair plasma with a density above the initial preplasma density is formed, counteracting the electron-free channel produced by the hole boring. This pair-dominated plasma can block the laser transport a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.05682","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":""},"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":"2026-05-18T00:40:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lbEVxymE7JJWMLbDMK2kUJIUaoaIQVUjQ+fDC/8vqx2SwOS15tBh/fIC4Czq3ps8lTWYVHDrEp4pVmHEHwf0BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:03:07.030248Z"},"content_sha256":"cdd6314ec418c9d642ca7f9c8e5c9104a988037293be8984363fdd70efd6d0e0","schema_version":"1.0","event_id":"sha256:cdd6314ec418c9d642ca7f9c8e5c9104a988037293be8984363fdd70efd6d0e0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DMRUU2H3Q2KDGR5DH4ICV5ZMMH/bundle.json","state_url":"https://pith.science/pith/DMRUU2H3Q2KDGR5DH4ICV5ZMMH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DMRUU2H3Q2KDGR5DH4ICV5ZMMH/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":"2026-05-25T15:03:07Z","links":{"resolver":"https://pith.science/pith/DMRUU2H3Q2KDGR5DH4ICV5ZMMH","bundle":"https://pith.science/pith/DMRUU2H3Q2KDGR5DH4ICV5ZMMH/bundle.json","state":"https://pith.science/pith/DMRUU2H3Q2KDGR5DH4ICV5ZMMH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DMRUU2H3Q2KDGR5DH4ICV5ZMMH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:DMRUU2H3Q2KDGR5DH4ICV5ZMMH","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":"70a82c5dab90c9ebc59ed11ddf0d7c9bca3d7d812b86dbc69a6acd8080b9143b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-01-20T04:17:31Z","title_canon_sha256":"21d41a68153a588853a73ac1eb32600a062208679ef66ab5db593cea020ebb61"},"schema_version":"1.0","source":{"id":"1701.05682","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.05682","created_at":"2026-05-18T00:40:30Z"},{"alias_kind":"arxiv_version","alias_value":"1701.05682v1","created_at":"2026-05-18T00:40:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.05682","created_at":"2026-05-18T00:40:30Z"},{"alias_kind":"pith_short_12","alias_value":"DMRUU2H3Q2KD","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"DMRUU2H3Q2KDGR5D","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"DMRUU2H3","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:cdd6314ec418c9d642ca7f9c8e5c9104a988037293be8984363fdd70efd6d0e0","target":"graph","created_at":"2026-05-18T00:40:30Z","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 investigate how next-generation laser pulses at 10 PW $-$ 200 PW interact with a solid target in the presence of a relativistically underdense preplasma produced by amplified spontaneous emission (ASE). Laser hole boring and relativistic transparency are strongly restrained due to the generation of electron-positron pairs and $\\gamma$-ray photons via quantum electrodynamics (QED) processes. A pair plasma with a density above the initial preplasma density is formed, counteracting the electron-free channel produced by the hole boring. This pair-dominated plasma can block the laser transport a","authors_text":"J. Zhang, P. Gibbon, W.-M. Wang, Y.-T. Li, Z.-M. Sheng","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-01-20T04:17:31Z","title":"Laser opacity in underdense preplasma of solid targets due to quantum electrodynamics effects"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.05682","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:e6059b629f126f695e70a3b995a3c199b9084411a4c909b4cda22bbab9dfe64e","target":"record","created_at":"2026-05-18T00:40:30Z","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":"70a82c5dab90c9ebc59ed11ddf0d7c9bca3d7d812b86dbc69a6acd8080b9143b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-01-20T04:17:31Z","title_canon_sha256":"21d41a68153a588853a73ac1eb32600a062208679ef66ab5db593cea020ebb61"},"schema_version":"1.0","source":{"id":"1701.05682","kind":"arxiv","version":1}},"canonical_sha256":"1b234a68fb86943347a33f102af72c61f7a8ce7ccb017f87dc483c208649df8d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1b234a68fb86943347a33f102af72c61f7a8ce7ccb017f87dc483c208649df8d","first_computed_at":"2026-05-18T00:40:30.751677Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:40:30.751677Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"W0auWFxFJCeEiIg0e4taFY0xxt9vWJ5kq9IvlI2X9aUAev2ggQk/M1YFNHUurMWMp9mizF22SpeNtv8efexwBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:40:30.752131Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.05682","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e6059b629f126f695e70a3b995a3c199b9084411a4c909b4cda22bbab9dfe64e","sha256:cdd6314ec418c9d642ca7f9c8e5c9104a988037293be8984363fdd70efd6d0e0"],"state_sha256":"3b81e5210ee0daa1a2e958de427f167ef0724ed57552f1ff7f8733ef196d781c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cx/YuXTWOxF5yYYg0z+e2iZyom1iNHg9A3yvJboQsQbQtYeh4EQpeKBjoo46Pz1gc6wfm3YKCPh0QlnELf6bAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T15:03:07.034163Z","bundle_sha256":"924424d233b65e3ab6342b5953aaa11644313b2a789d37251f3edff8f317a901"}}