{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:V3XLPSMGFNKFGBIR63PUCA7MN4","short_pith_number":"pith:V3XLPSMG","canonical_record":{"source":{"id":"1302.7183","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2013-02-28T13:07:38Z","cross_cats_sorted":[],"title_canon_sha256":"bdc019d014868067dc3cdbf84868a20d9bf63f494f4225f3d95ff9fa130cb2f9","abstract_canon_sha256":"3bd27e76389f3963c85889c05b23f287db6b40c2e42400b7b813750f015b07a3"},"schema_version":"1.0"},"canonical_sha256":"aeeeb7c9862b54530511f6df4103ec6f0f964ccb82ecc71ab47e882a6fe08d82","source":{"kind":"arxiv","id":"1302.7183","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.7183","created_at":"2026-05-18T03:21:33Z"},{"alias_kind":"arxiv_version","alias_value":"1302.7183v1","created_at":"2026-05-18T03:21:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.7183","created_at":"2026-05-18T03:21:33Z"},{"alias_kind":"pith_short_12","alias_value":"V3XLPSMGFNKF","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"V3XLPSMGFNKFGBIR","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"V3XLPSMG","created_at":"2026-05-18T12:28:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:V3XLPSMGFNKFGBIR63PUCA7MN4","target":"record","payload":{"canonical_record":{"source":{"id":"1302.7183","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2013-02-28T13:07:38Z","cross_cats_sorted":[],"title_canon_sha256":"bdc019d014868067dc3cdbf84868a20d9bf63f494f4225f3d95ff9fa130cb2f9","abstract_canon_sha256":"3bd27e76389f3963c85889c05b23f287db6b40c2e42400b7b813750f015b07a3"},"schema_version":"1.0"},"canonical_sha256":"aeeeb7c9862b54530511f6df4103ec6f0f964ccb82ecc71ab47e882a6fe08d82","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:21:33.425909Z","signature_b64":"U2zwOEE96Zp6Q0Il2epVKwW5w6Qg2waUDjTThrROe/VKmUWU+AXKfBGdcwNHiCdoMFmKMYeqPP/LyS5yYDNqAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aeeeb7c9862b54530511f6df4103ec6f0f964ccb82ecc71ab47e882a6fe08d82","last_reissued_at":"2026-05-18T03:21:33.425137Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:21:33.425137Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.7183","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":"2026-05-18T03:21:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t0a0vulYY4BQjSKmJA74of7wbTvp/JTSujJqIfeuFJkUiaBvzpr2CVx38QCcTvTcvZsv/liiFBUlwg0J829fDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:55:42.580400Z"},"content_sha256":"3083c8c9d3a8f4f3966405088d1b5b63a68134e8f84757e6367b7db02faf382a","schema_version":"1.0","event_id":"sha256:3083c8c9d3a8f4f3966405088d1b5b63a68134e8f84757e6367b7db02faf382a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:V3XLPSMGFNKFGBIR63PUCA7MN4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhanced Proton Acceleration by an Ultrashort Laser Interaction with Structured Dynamic Plasma Targets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"A. Andreev, A. Baspaly, A. Zigler, D. Gordon, E.Nahum, E. Schleifer, F. Abicht, G.Priebe, J. Branzel, K.W.D.Ledingham, M. Botton, M. Schnuerer, P. Sprangle, S. Eisenman, S.Steinke, W.Sandner, Y.Pomerantz","submitted_at":"2013-02-28T13:07:38Z","abstract_excerpt":"We experimentally demonstrate a notably enhanced acceleration of protons to high energy by relatively modest ultrashort laser pulses and structured dynamical plasma targets. Realized by special deposition of snow targets on sapphire substrates and using carefully planned pre-pulses, high proton yield emitted in a narrow solid angle with energy above 21MeV were detected from a 5TW laser. Our simulations predict that using the proposed scheme protons can be accelerated to energies above 150MeV by 100TW laser systems."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.7183","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":"2026-05-18T03:21:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2r9w0rcYQ99JRUf7QUtl7EEYrz1muMgsXB5/2ODl/pvbdg4LNj9Jz8bXtak1DPWqV1+9pO6wdui33oz4aQ6/Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:55:42.581186Z"},"content_sha256":"ef79d54779b757d8315b181970276305d3f265c69c3efc327507a1ab2f5fe705","schema_version":"1.0","event_id":"sha256:ef79d54779b757d8315b181970276305d3f265c69c3efc327507a1ab2f5fe705"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V3XLPSMGFNKFGBIR63PUCA7MN4/bundle.json","state_url":"https://pith.science/pith/V3XLPSMGFNKFGBIR63PUCA7MN4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V3XLPSMGFNKFGBIR63PUCA7MN4/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":"2026-05-31T12:55:42Z","links":{"resolver":"https://pith.science/pith/V3XLPSMGFNKFGBIR63PUCA7MN4","bundle":"https://pith.science/pith/V3XLPSMGFNKFGBIR63PUCA7MN4/bundle.json","state":"https://pith.science/pith/V3XLPSMGFNKFGBIR63PUCA7MN4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V3XLPSMGFNKFGBIR63PUCA7MN4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:V3XLPSMGFNKFGBIR63PUCA7MN4","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":"3bd27e76389f3963c85889c05b23f287db6b40c2e42400b7b813750f015b07a3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2013-02-28T13:07:38Z","title_canon_sha256":"bdc019d014868067dc3cdbf84868a20d9bf63f494f4225f3d95ff9fa130cb2f9"},"schema_version":"1.0","source":{"id":"1302.7183","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.7183","created_at":"2026-05-18T03:21:33Z"},{"alias_kind":"arxiv_version","alias_value":"1302.7183v1","created_at":"2026-05-18T03:21:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.7183","created_at":"2026-05-18T03:21:33Z"},{"alias_kind":"pith_short_12","alias_value":"V3XLPSMGFNKF","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"V3XLPSMGFNKFGBIR","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"V3XLPSMG","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:ef79d54779b757d8315b181970276305d3f265c69c3efc327507a1ab2f5fe705","target":"graph","created_at":"2026-05-18T03:21:33Z","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 experimentally demonstrate a notably enhanced acceleration of protons to high energy by relatively modest ultrashort laser pulses and structured dynamical plasma targets. Realized by special deposition of snow targets on sapphire substrates and using carefully planned pre-pulses, high proton yield emitted in a narrow solid angle with energy above 21MeV were detected from a 5TW laser. Our simulations predict that using the proposed scheme protons can be accelerated to energies above 150MeV by 100TW laser systems.","authors_text":"A. Andreev, A. Baspaly, A. Zigler, D. Gordon, E.Nahum, E. Schleifer, F. Abicht, G.Priebe, J. Branzel, K.W.D.Ledingham, M. Botton, M. Schnuerer, P. Sprangle, S. Eisenman, S.Steinke, W.Sandner, Y.Pomerantz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2013-02-28T13:07:38Z","title":"Enhanced Proton Acceleration by an Ultrashort Laser Interaction with Structured Dynamic Plasma Targets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.7183","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":"sha256:3083c8c9d3a8f4f3966405088d1b5b63a68134e8f84757e6367b7db02faf382a","target":"record","created_at":"2026-05-18T03:21:33Z","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":"3bd27e76389f3963c85889c05b23f287db6b40c2e42400b7b813750f015b07a3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2013-02-28T13:07:38Z","title_canon_sha256":"bdc019d014868067dc3cdbf84868a20d9bf63f494f4225f3d95ff9fa130cb2f9"},"schema_version":"1.0","source":{"id":"1302.7183","kind":"arxiv","version":1}},"canonical_sha256":"aeeeb7c9862b54530511f6df4103ec6f0f964ccb82ecc71ab47e882a6fe08d82","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aeeeb7c9862b54530511f6df4103ec6f0f964ccb82ecc71ab47e882a6fe08d82","first_computed_at":"2026-05-18T03:21:33.425137Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:21:33.425137Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U2zwOEE96Zp6Q0Il2epVKwW5w6Qg2waUDjTThrROe/VKmUWU+AXKfBGdcwNHiCdoMFmKMYeqPP/LyS5yYDNqAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:21:33.425909Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.7183","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3083c8c9d3a8f4f3966405088d1b5b63a68134e8f84757e6367b7db02faf382a","sha256:ef79d54779b757d8315b181970276305d3f265c69c3efc327507a1ab2f5fe705"],"state_sha256":"9deab4773bb5c53654ff45642353054d68eec385fd2ad906d809c2759b067320"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sjOJ+iht72oAD6XX1dhyzAzQYlroy9QD/8g+vz3k8HUTrZd3HtJCPWffPw5LdcHRwiRndsNOLX8fvduke8G+CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T12:55:42.585441Z","bundle_sha256":"03370e624baf109cdb0633ae4c2983df5f193aa568e1a0e5e7b6b9efdbb503a7"}}