{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:ZPXKOYCCWNWABXITLO66E6YSOM","short_pith_number":"pith:ZPXKOYCC","canonical_record":{"source":{"id":"1302.4611","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2013-02-19T13:55:22Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"02f8caa36c2e3c0e09f2045904a8c65a1ede53c1acafd443075fa482bb16a6a6","abstract_canon_sha256":"5c5b361cbcd3ef3230afb5f920b0bf68fcb8762eb313a7cf466e49e7af30d3ba"},"schema_version":"1.0"},"canonical_sha256":"cbeea76042b36c00dd135bbde27b12731eaac10d51282213a17303c956d15fa7","source":{"kind":"arxiv","id":"1302.4611","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.4611","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"arxiv_version","alias_value":"1302.4611v1","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.4611","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"pith_short_12","alias_value":"ZPXKOYCCWNWA","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"ZPXKOYCCWNWABXIT","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"ZPXKOYCC","created_at":"2026-05-18T12:28:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:ZPXKOYCCWNWABXITLO66E6YSOM","target":"record","payload":{"canonical_record":{"source":{"id":"1302.4611","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2013-02-19T13:55:22Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"02f8caa36c2e3c0e09f2045904a8c65a1ede53c1acafd443075fa482bb16a6a6","abstract_canon_sha256":"5c5b361cbcd3ef3230afb5f920b0bf68fcb8762eb313a7cf466e49e7af30d3ba"},"schema_version":"1.0"},"canonical_sha256":"cbeea76042b36c00dd135bbde27b12731eaac10d51282213a17303c956d15fa7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:35.325477Z","signature_b64":"lq6Vd1M09F4cNJdziiZEEPlJv6laFAfVO6CYUFvjV7yhxtE1iMmnc4vblwzo0bYqqH55lPonS3LadUeC5TosBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cbeea76042b36c00dd135bbde27b12731eaac10d51282213a17303c956d15fa7","last_reissued_at":"2026-05-18T01:51:35.325102Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:35.325102Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.4611","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":"2026-05-18T01:51:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1NZi4uwf7TrwplFS/mQzskr0+wWSpDE36PV/PQo3nRz4os0/DC/UN6rwhEuU4fhfHz0B00varlYDh8X3F41MCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:38:45.605149Z"},"content_sha256":"6ec6075c8296dcc9743f143f09f9e82cbaf42be2b9f64fd61505ab34a85eeb6b","schema_version":"1.0","event_id":"sha256:6ec6075c8296dcc9743f143f09f9e82cbaf42be2b9f64fd61505ab34a85eeb6b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:ZPXKOYCCWNWABXITLO66E6YSOM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ion acceleration in \"dragging field\" of a light-pressure-driven piston","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"physics.plasm-ph","authors_text":"Alexander Pukhov, Baifei Shen, Liangliang Ji","submitted_at":"2013-02-19T13:55:22Z","abstract_excerpt":"We propose a new acceleration scheme that combines shock wave acceleration (SWA) and light pressure acceleration (LPA). When a thin foil driven by light pressure of an ultra-intense laser pulse propagates in underdense background plasma, it serves as a shock-like piston, trapping and reflecting background protons to ultra-high energies. Unlike in SWA, the piston velocity is not limited by the Mach number and can be highly relativistic. Background protons can be trapped and reflected forward by the enormous \"dragging field\" potential behind the piston which is not employed in LPA. Our one- and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.4611","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":"2026-05-18T01:51:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0hLGrPnpmkMszPp96GUc/PHPuSfY26fx/rqqGD8pfG/GIbrvzLoFiT5iWrt6xVMdBQW9cSyMfUYx+GWFtIBbCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:38:45.605519Z"},"content_sha256":"401f35e13b8944174c0fda95a13e2660a143ffcfb5342cd826d27e734a3b6f1e","schema_version":"1.0","event_id":"sha256:401f35e13b8944174c0fda95a13e2660a143ffcfb5342cd826d27e734a3b6f1e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZPXKOYCCWNWABXITLO66E6YSOM/bundle.json","state_url":"https://pith.science/pith/ZPXKOYCCWNWABXITLO66E6YSOM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZPXKOYCCWNWABXITLO66E6YSOM/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":"2026-05-25T17:38:45Z","links":{"resolver":"https://pith.science/pith/ZPXKOYCCWNWABXITLO66E6YSOM","bundle":"https://pith.science/pith/ZPXKOYCCWNWABXITLO66E6YSOM/bundle.json","state":"https://pith.science/pith/ZPXKOYCCWNWABXITLO66E6YSOM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZPXKOYCCWNWABXITLO66E6YSOM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:ZPXKOYCCWNWABXITLO66E6YSOM","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":"5c5b361cbcd3ef3230afb5f920b0bf68fcb8762eb313a7cf466e49e7af30d3ba","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2013-02-19T13:55:22Z","title_canon_sha256":"02f8caa36c2e3c0e09f2045904a8c65a1ede53c1acafd443075fa482bb16a6a6"},"schema_version":"1.0","source":{"id":"1302.4611","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.4611","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"arxiv_version","alias_value":"1302.4611v1","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.4611","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"pith_short_12","alias_value":"ZPXKOYCCWNWA","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"ZPXKOYCCWNWABXIT","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"ZPXKOYCC","created_at":"2026-05-18T12:28:09Z"}],"graph_snapshots":[{"event_id":"sha256:401f35e13b8944174c0fda95a13e2660a143ffcfb5342cd826d27e734a3b6f1e","target":"graph","created_at":"2026-05-18T01:51:35Z","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 propose a new acceleration scheme that combines shock wave acceleration (SWA) and light pressure acceleration (LPA). When a thin foil driven by light pressure of an ultra-intense laser pulse propagates in underdense background plasma, it serves as a shock-like piston, trapping and reflecting background protons to ultra-high energies. Unlike in SWA, the piston velocity is not limited by the Mach number and can be highly relativistic. Background protons can be trapped and reflected forward by the enormous \"dragging field\" potential behind the piston which is not employed in LPA. Our one- and ","authors_text":"Alexander Pukhov, Baifei Shen, Liangliang Ji","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2013-02-19T13:55:22Z","title":"Ion acceleration in \"dragging field\" of a light-pressure-driven piston"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.4611","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":"sha256:6ec6075c8296dcc9743f143f09f9e82cbaf42be2b9f64fd61505ab34a85eeb6b","target":"record","created_at":"2026-05-18T01:51:35Z","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":"5c5b361cbcd3ef3230afb5f920b0bf68fcb8762eb313a7cf466e49e7af30d3ba","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2013-02-19T13:55:22Z","title_canon_sha256":"02f8caa36c2e3c0e09f2045904a8c65a1ede53c1acafd443075fa482bb16a6a6"},"schema_version":"1.0","source":{"id":"1302.4611","kind":"arxiv","version":1}},"canonical_sha256":"cbeea76042b36c00dd135bbde27b12731eaac10d51282213a17303c956d15fa7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cbeea76042b36c00dd135bbde27b12731eaac10d51282213a17303c956d15fa7","first_computed_at":"2026-05-18T01:51:35.325102Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:35.325102Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lq6Vd1M09F4cNJdziiZEEPlJv6laFAfVO6CYUFvjV7yhxtE1iMmnc4vblwzo0bYqqH55lPonS3LadUeC5TosBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:35.325477Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.4611","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6ec6075c8296dcc9743f143f09f9e82cbaf42be2b9f64fd61505ab34a85eeb6b","sha256:401f35e13b8944174c0fda95a13e2660a143ffcfb5342cd826d27e734a3b6f1e"],"state_sha256":"27d6e876cd453b9220b30f5c850cade4bc4d0eebd96091253f5ac21a3fe9fa63"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1IScnN+hzRmXAnzBE9FzrlyMnXFogAh2ttf42ASK0/Gj/PFiBiK6/2ZYWOJjRV1vjYlw1uZDUkhn0fzssIFLDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:38:45.608244Z","bundle_sha256":"39b4a8627fdc805144a2630d4dc6801c10da004677197548ab9f12d335566eb9"}}