{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:NDPZEDRXEYFNUZQKRHA4W6D7VT","short_pith_number":"pith:NDPZEDRX","canonical_record":{"source":{"id":"1304.6203","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2013-04-23T08:17:12Z","cross_cats_sorted":[],"title_canon_sha256":"71065ff3a5622dc2ebd921b95a42b84c3529a1e0e638ae578f6a9c55622b8d57","abstract_canon_sha256":"d4658befcc037ed421841aec00c9d97813cb9f8bf3b65376a18859182c8b6e32"},"schema_version":"1.0"},"canonical_sha256":"68df920e37260ada660a89c1cb787facdf473fa0750a5e5cdb14157e1d2ab335","source":{"kind":"arxiv","id":"1304.6203","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.6203","created_at":"2026-05-18T01:50:23Z"},{"alias_kind":"arxiv_version","alias_value":"1304.6203v1","created_at":"2026-05-18T01:50:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.6203","created_at":"2026-05-18T01:50:23Z"},{"alias_kind":"pith_short_12","alias_value":"NDPZEDRXEYFN","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"NDPZEDRXEYFNUZQK","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"NDPZEDRX","created_at":"2026-05-18T12:27:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:NDPZEDRXEYFNUZQKRHA4W6D7VT","target":"record","payload":{"canonical_record":{"source":{"id":"1304.6203","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2013-04-23T08:17:12Z","cross_cats_sorted":[],"title_canon_sha256":"71065ff3a5622dc2ebd921b95a42b84c3529a1e0e638ae578f6a9c55622b8d57","abstract_canon_sha256":"d4658befcc037ed421841aec00c9d97813cb9f8bf3b65376a18859182c8b6e32"},"schema_version":"1.0"},"canonical_sha256":"68df920e37260ada660a89c1cb787facdf473fa0750a5e5cdb14157e1d2ab335","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:50:23.208466Z","signature_b64":"WH2N0Kq/RPHTwtHoHehlVPli3ul4kY2foXGrUIkkl5UHV4+wmNKH4YyfdjbBXLCDzk03UzgXlML7+oQkUFpPCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"68df920e37260ada660a89c1cb787facdf473fa0750a5e5cdb14157e1d2ab335","last_reissued_at":"2026-05-18T01:50:23.207843Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:50:23.207843Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.6203","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":"2026-05-18T01:50:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UrKI01tF6Apxv/z6RK1Amp5Mmj5UcFuW3c7Bia9Fd2bNoCHLdu+/Ds0FHSOLsfN2BNJ2MdmewySX1H1g81ULCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T02:23:24.614520Z"},"content_sha256":"cf540dc9f2244400594bf0931225d2b76179675aad559451197941f1593786e9","schema_version":"1.0","event_id":"sha256:cf540dc9f2244400594bf0931225d2b76179675aad559451197941f1593786e9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:NDPZEDRXEYFNUZQKRHA4W6D7VT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Laser ion acceleration by using the dynamic motion of a target","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"Toshimasa Morita","submitted_at":"2013-04-23T08:17:12Z","abstract_excerpt":"Proton acceleration by using a 620-TW, 18-J laser pulse of peak intensity of $5\\times 10^{21}$ W/cm$^{2}$ irradiating a disk target is examined using three-dimensional particle-in-cell simulations. It is shown that protons are accelerated efficiently to high energy for a \"light\" material in the first layer of a double-layer target, because a strongly inhomogeneous expansion of the first layer occurs by a Coulomb explosion within such a material. Moreover, a large movement of the first layer for the accelerated protons is produced by radiation-pressure-dominant acceleration. A time-varying elec"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.6203","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":"2026-05-18T01:50:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Yuw8vYmSN1vxM/Dboh5KxhrRi/6MnXDlsqbD63iQjLtKFEYh/oVJjxDPf5Z75OnEfh6dwma0p09uFGwFBz/oDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T02:23:24.615224Z"},"content_sha256":"36c89e946ec6400265b7392541235368620b38b63c9fba860880ecac35fc4d9e","schema_version":"1.0","event_id":"sha256:36c89e946ec6400265b7392541235368620b38b63c9fba860880ecac35fc4d9e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NDPZEDRXEYFNUZQKRHA4W6D7VT/bundle.json","state_url":"https://pith.science/pith/NDPZEDRXEYFNUZQKRHA4W6D7VT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NDPZEDRXEYFNUZQKRHA4W6D7VT/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":"2026-06-11T02:23:24Z","links":{"resolver":"https://pith.science/pith/NDPZEDRXEYFNUZQKRHA4W6D7VT","bundle":"https://pith.science/pith/NDPZEDRXEYFNUZQKRHA4W6D7VT/bundle.json","state":"https://pith.science/pith/NDPZEDRXEYFNUZQKRHA4W6D7VT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NDPZEDRXEYFNUZQKRHA4W6D7VT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:NDPZEDRXEYFNUZQKRHA4W6D7VT","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":"d4658befcc037ed421841aec00c9d97813cb9f8bf3b65376a18859182c8b6e32","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2013-04-23T08:17:12Z","title_canon_sha256":"71065ff3a5622dc2ebd921b95a42b84c3529a1e0e638ae578f6a9c55622b8d57"},"schema_version":"1.0","source":{"id":"1304.6203","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.6203","created_at":"2026-05-18T01:50:23Z"},{"alias_kind":"arxiv_version","alias_value":"1304.6203v1","created_at":"2026-05-18T01:50:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.6203","created_at":"2026-05-18T01:50:23Z"},{"alias_kind":"pith_short_12","alias_value":"NDPZEDRXEYFN","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"NDPZEDRXEYFNUZQK","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"NDPZEDRX","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:36c89e946ec6400265b7392541235368620b38b63c9fba860880ecac35fc4d9e","target":"graph","created_at":"2026-05-18T01:50:23Z","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":"Proton acceleration by using a 620-TW, 18-J laser pulse of peak intensity of $5\\times 10^{21}$ W/cm$^{2}$ irradiating a disk target is examined using three-dimensional particle-in-cell simulations. It is shown that protons are accelerated efficiently to high energy for a \"light\" material in the first layer of a double-layer target, because a strongly inhomogeneous expansion of the first layer occurs by a Coulomb explosion within such a material. Moreover, a large movement of the first layer for the accelerated protons is produced by radiation-pressure-dominant acceleration. A time-varying elec","authors_text":"Toshimasa Morita","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2013-04-23T08:17:12Z","title":"Laser ion acceleration by using the dynamic motion of a target"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.6203","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:cf540dc9f2244400594bf0931225d2b76179675aad559451197941f1593786e9","target":"record","created_at":"2026-05-18T01:50:23Z","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":"d4658befcc037ed421841aec00c9d97813cb9f8bf3b65376a18859182c8b6e32","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2013-04-23T08:17:12Z","title_canon_sha256":"71065ff3a5622dc2ebd921b95a42b84c3529a1e0e638ae578f6a9c55622b8d57"},"schema_version":"1.0","source":{"id":"1304.6203","kind":"arxiv","version":1}},"canonical_sha256":"68df920e37260ada660a89c1cb787facdf473fa0750a5e5cdb14157e1d2ab335","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"68df920e37260ada660a89c1cb787facdf473fa0750a5e5cdb14157e1d2ab335","first_computed_at":"2026-05-18T01:50:23.207843Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:23.207843Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WH2N0Kq/RPHTwtHoHehlVPli3ul4kY2foXGrUIkkl5UHV4+wmNKH4YyfdjbBXLCDzk03UzgXlML7+oQkUFpPCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:23.208466Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.6203","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cf540dc9f2244400594bf0931225d2b76179675aad559451197941f1593786e9","sha256:36c89e946ec6400265b7392541235368620b38b63c9fba860880ecac35fc4d9e"],"state_sha256":"2fee5f42d9cadaabf4e8382ea389ff213fd10a4787e60217f80198df0537793f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8s0iTq3xAFVq5SsgJeAbYVBrbpEax73p/p8IQj8gZMZ8BTxsEMBbeyeq4XbDyMUmPfhR3aKQ1VR7eYCsda4WAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T02:23:24.618757Z","bundle_sha256":"5a2bbe3496971834d8a054ae49ce91cf1e5ab29edd7b79b12afa33ec8e945813"}}