{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:7FJ6FYQXLZ2TQIUV54PXYBBEXK","short_pith_number":"pith:7FJ6FYQX","canonical_record":{"source":{"id":"1107.4912","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2011-07-25T12:08:34Z","cross_cats_sorted":["physics.acc-ph"],"title_canon_sha256":"2c4d0a4c055ec1a4f330e863d9cef897049914306080f3251b4a6eb2dc98c75b","abstract_canon_sha256":"ea48c53643cfdbef191d3a567277331e9fc904640e93b6bf6d67bf73bcda38ea"},"schema_version":"1.0"},"canonical_sha256":"f953e2e2175e75382295ef1f7c0424baa56864f6411afa6eb04de7575ba8002d","source":{"kind":"arxiv","id":"1107.4912","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.4912","created_at":"2026-05-18T04:14:54Z"},{"alias_kind":"arxiv_version","alias_value":"1107.4912v1","created_at":"2026-05-18T04:14:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.4912","created_at":"2026-05-18T04:14:54Z"},{"alias_kind":"pith_short_12","alias_value":"7FJ6FYQXLZ2T","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"7FJ6FYQXLZ2TQIUV","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"7FJ6FYQX","created_at":"2026-05-18T12:26:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:7FJ6FYQXLZ2TQIUV54PXYBBEXK","target":"record","payload":{"canonical_record":{"source":{"id":"1107.4912","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2011-07-25T12:08:34Z","cross_cats_sorted":["physics.acc-ph"],"title_canon_sha256":"2c4d0a4c055ec1a4f330e863d9cef897049914306080f3251b4a6eb2dc98c75b","abstract_canon_sha256":"ea48c53643cfdbef191d3a567277331e9fc904640e93b6bf6d67bf73bcda38ea"},"schema_version":"1.0"},"canonical_sha256":"f953e2e2175e75382295ef1f7c0424baa56864f6411afa6eb04de7575ba8002d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:14:54.801286Z","signature_b64":"sBJxP7rRCWOpFtkjIYgoc7D9ebzGDSD1iPcLa6M92xfZ8e7K0UmDmLRUAyPmvMm45B6J7D6qRIzvlW25H9vjCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f953e2e2175e75382295ef1f7c0424baa56864f6411afa6eb04de7575ba8002d","last_reissued_at":"2026-05-18T04:14:54.800661Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:14:54.800661Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1107.4912","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":"2026-05-18T04:14:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DtL5pEMpyZtHyfwik8Nb439A2XO4KgN1O300jE0KG4T6F6qt0g21XZFIUUz05kHdPB+i1/QWvI1m/kEmpeGtBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T11:02:29.557551Z"},"content_sha256":"3d0815b6bfeff67a1acdf113076eed65ed65a482628c46891b548bcf47011ed1","schema_version":"1.0","event_id":"sha256:3d0815b6bfeff67a1acdf113076eed65ed65a482628c46891b548bcf47011ed1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:7FJ6FYQXLZ2TQIUV54PXYBBEXK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetic control of particle-injection in plasma based accelerators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.acc-ph"],"primary_cat":"physics.plasm-ph","authors_text":"J. Vieira, L.O. Silva, R.A. Fonseca, S.F. Martins, V.B. Pathak, W.B. Mori","submitted_at":"2011-07-25T12:08:34Z","abstract_excerpt":"The use of an external transverse magnetic field to trigger and to control electron self-injection in laser- and particle-beam driven wakefield accelerators is examined analytically and through full-scale particle-in-cell simulations. A magnetic field can relax the injection threshold and can be used to control main output beam features such as charge, energy, and transverse dynamics in the ion channel associated with the plasma blowout. It is shown that this mechanism could be studied using state-of-the-art magnetic fields in next generation plasma accelerator experiments."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.4912","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":"2026-05-18T04:14:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y8eKbPut+8VHDumEKnZZysmIiTyhMIjPeVT8AtmhFhWxszmjf0BdBEEgiWyR0bgb7AG7zGCtHtnY0s1z5lvMBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T11:02:29.557913Z"},"content_sha256":"395b8b67770ef727d34f30490b064bbc9bb230881f978149a718a9138842a9c3","schema_version":"1.0","event_id":"sha256:395b8b67770ef727d34f30490b064bbc9bb230881f978149a718a9138842a9c3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7FJ6FYQXLZ2TQIUV54PXYBBEXK/bundle.json","state_url":"https://pith.science/pith/7FJ6FYQXLZ2TQIUV54PXYBBEXK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7FJ6FYQXLZ2TQIUV54PXYBBEXK/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":"2026-05-30T11:02:29Z","links":{"resolver":"https://pith.science/pith/7FJ6FYQXLZ2TQIUV54PXYBBEXK","bundle":"https://pith.science/pith/7FJ6FYQXLZ2TQIUV54PXYBBEXK/bundle.json","state":"https://pith.science/pith/7FJ6FYQXLZ2TQIUV54PXYBBEXK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7FJ6FYQXLZ2TQIUV54PXYBBEXK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:7FJ6FYQXLZ2TQIUV54PXYBBEXK","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":"ea48c53643cfdbef191d3a567277331e9fc904640e93b6bf6d67bf73bcda38ea","cross_cats_sorted":["physics.acc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2011-07-25T12:08:34Z","title_canon_sha256":"2c4d0a4c055ec1a4f330e863d9cef897049914306080f3251b4a6eb2dc98c75b"},"schema_version":"1.0","source":{"id":"1107.4912","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.4912","created_at":"2026-05-18T04:14:54Z"},{"alias_kind":"arxiv_version","alias_value":"1107.4912v1","created_at":"2026-05-18T04:14:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.4912","created_at":"2026-05-18T04:14:54Z"},{"alias_kind":"pith_short_12","alias_value":"7FJ6FYQXLZ2T","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"7FJ6FYQXLZ2TQIUV","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"7FJ6FYQX","created_at":"2026-05-18T12:26:22Z"}],"graph_snapshots":[{"event_id":"sha256:395b8b67770ef727d34f30490b064bbc9bb230881f978149a718a9138842a9c3","target":"graph","created_at":"2026-05-18T04:14:54Z","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"},"paper":{"abstract_excerpt":"The use of an external transverse magnetic field to trigger and to control electron self-injection in laser- and particle-beam driven wakefield accelerators is examined analytically and through full-scale particle-in-cell simulations. A magnetic field can relax the injection threshold and can be used to control main output beam features such as charge, energy, and transverse dynamics in the ion channel associated with the plasma blowout. It is shown that this mechanism could be studied using state-of-the-art magnetic fields in next generation plasma accelerator experiments.","authors_text":"J. Vieira, L.O. Silva, R.A. Fonseca, S.F. Martins, V.B. Pathak, W.B. Mori","cross_cats":["physics.acc-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2011-07-25T12:08:34Z","title":"Magnetic control of particle-injection in plasma based accelerators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.4912","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":"sha256:3d0815b6bfeff67a1acdf113076eed65ed65a482628c46891b548bcf47011ed1","target":"record","created_at":"2026-05-18T04:14:54Z","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":"ea48c53643cfdbef191d3a567277331e9fc904640e93b6bf6d67bf73bcda38ea","cross_cats_sorted":["physics.acc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2011-07-25T12:08:34Z","title_canon_sha256":"2c4d0a4c055ec1a4f330e863d9cef897049914306080f3251b4a6eb2dc98c75b"},"schema_version":"1.0","source":{"id":"1107.4912","kind":"arxiv","version":1}},"canonical_sha256":"f953e2e2175e75382295ef1f7c0424baa56864f6411afa6eb04de7575ba8002d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f953e2e2175e75382295ef1f7c0424baa56864f6411afa6eb04de7575ba8002d","first_computed_at":"2026-05-18T04:14:54.800661Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:14:54.800661Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sBJxP7rRCWOpFtkjIYgoc7D9ebzGDSD1iPcLa6M92xfZ8e7K0UmDmLRUAyPmvMm45B6J7D6qRIzvlW25H9vjCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:14:54.801286Z","signed_message":"canonical_sha256_bytes"},"source_id":"1107.4912","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3d0815b6bfeff67a1acdf113076eed65ed65a482628c46891b548bcf47011ed1","sha256:395b8b67770ef727d34f30490b064bbc9bb230881f978149a718a9138842a9c3"],"state_sha256":"ec88621a26973a906423f7eea919ff48ae3feefc7f449322610b90f6e4f82121"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jGQcYvep6eFWdVhINRM20NuYIha4laLE3muEsUCKXOrQL8LhNJmQ2v39s5A7NLBe9pGRiTWlvLyY8zZqcO1CDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T11:02:29.560138Z","bundle_sha256":"85ee063aaccdcf9cfb49cfc35c42513944677ea58021063c25e80fd2cbc6233b"}}