{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:NPOAGNDWHJAJWSEWIB4XJFRSP5","short_pith_number":"pith:NPOAGNDW","canonical_record":{"source":{"id":"2008.08485","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-08-19T14:55:02Z","cross_cats_sorted":["physics.acc-ph"],"title_canon_sha256":"02eab7078a32a2dcfd02ec4d550eb62c299fa860406b2d5975b0169fbecc877a","abstract_canon_sha256":"c2758557e3bf1121e6c109862df6a5ba72eb966cdaba375466ab8028c66ef4c1"},"schema_version":"1.0"},"canonical_sha256":"6bdc0334763a409b489640797496327f4bd341222c728c14d151144809556b30","source":{"kind":"arxiv","id":"2008.08485","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.08485","created_at":"2026-07-05T01:58:42Z"},{"alias_kind":"arxiv_version","alias_value":"2008.08485v1","created_at":"2026-07-05T01:58:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.08485","created_at":"2026-07-05T01:58:42Z"},{"alias_kind":"pith_short_12","alias_value":"NPOAGNDWHJAJ","created_at":"2026-07-05T01:58:42Z"},{"alias_kind":"pith_short_16","alias_value":"NPOAGNDWHJAJWSEW","created_at":"2026-07-05T01:58:42Z"},{"alias_kind":"pith_short_8","alias_value":"NPOAGNDW","created_at":"2026-07-05T01:58:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:NPOAGNDWHJAJWSEWIB4XJFRSP5","target":"record","payload":{"canonical_record":{"source":{"id":"2008.08485","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-08-19T14:55:02Z","cross_cats_sorted":["physics.acc-ph"],"title_canon_sha256":"02eab7078a32a2dcfd02ec4d550eb62c299fa860406b2d5975b0169fbecc877a","abstract_canon_sha256":"c2758557e3bf1121e6c109862df6a5ba72eb966cdaba375466ab8028c66ef4c1"},"schema_version":"1.0"},"canonical_sha256":"6bdc0334763a409b489640797496327f4bd341222c728c14d151144809556b30","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:58:42.076728Z","signature_b64":"717Jg0Z2HurzYy9zF72qgZAdkF9b6uE+G1E2QD/0LVV3A9+ShOhhjhG6+R40fm4H/bB4NR2jSHepNXPFYvsqDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6bdc0334763a409b489640797496327f4bd341222c728c14d151144809556b30","last_reissued_at":"2026-07-05T01:58:42.076293Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:58:42.076293Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.08485","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":"2026-07-05T01:58:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kY9eQLAjh43YagTy3x7rQnAbrOw1vn7oyBtMRNMZuLHcLpyNJJkN/6KFeGWQ/e3fWUbZqcmeBCoXFiKJ/Gc6DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:55:10.164281Z"},"content_sha256":"9cf2d00ed00ae6b6584b53cff04cc3787a66e25f981644686e8e4d6d9324116d","schema_version":"1.0","event_id":"sha256:9cf2d00ed00ae6b6584b53cff04cc3787a66e25f981644686e8e4d6d9324116d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:NPOAGNDWHJAJWSEWIB4XJFRSP5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ponderomotive Injection in Plasma Wakefield Accelerators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.acc-ph"],"primary_cat":"physics.plasm-ph","authors_text":"Alberto Martinez de la Ossa, Jens Osterhoff, Ming Zeng","submitted_at":"2020-08-19T14:55:02Z","abstract_excerpt":"A new electron injection scheme is proposed in sub-relativistic plasma wakefield accelerators. A transverse laser ionizes a dopant gas and ponderomotively accelerates the released electrons in the direction of wake propagation. This process enables electron trapping in the wakefield even for a wakefield potential below the trapping threshold. We study the scheme theoretically and by means of particle-in-cell simulations to demonstrate high-quality beam formation and acceleration with sub-micrometer normalized emittances and sub-percent uncorrelated energy spreads."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.08485","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2008.08485/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:58:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yJ6Vg7rlewbgqC8ILYqsbvmZDr+Yri8eNp4IcHUr1x8xKz4tDMADKFr7hG0mKPr0xnvl3ZvFNY10SeolwEBVAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:55:10.164781Z"},"content_sha256":"9884a16831f7b5ef5ce3a2ba4c7dc4f4049b98f0619554f5565b7f6d9b537f43","schema_version":"1.0","event_id":"sha256:9884a16831f7b5ef5ce3a2ba4c7dc4f4049b98f0619554f5565b7f6d9b537f43"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NPOAGNDWHJAJWSEWIB4XJFRSP5/bundle.json","state_url":"https://pith.science/pith/NPOAGNDWHJAJWSEWIB4XJFRSP5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NPOAGNDWHJAJWSEWIB4XJFRSP5/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":"2026-08-03T18:55:10Z","links":{"resolver":"https://pith.science/pith/NPOAGNDWHJAJWSEWIB4XJFRSP5","bundle":"https://pith.science/pith/NPOAGNDWHJAJWSEWIB4XJFRSP5/bundle.json","state":"https://pith.science/pith/NPOAGNDWHJAJWSEWIB4XJFRSP5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NPOAGNDWHJAJWSEWIB4XJFRSP5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:NPOAGNDWHJAJWSEWIB4XJFRSP5","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":"c2758557e3bf1121e6c109862df6a5ba72eb966cdaba375466ab8028c66ef4c1","cross_cats_sorted":["physics.acc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-08-19T14:55:02Z","title_canon_sha256":"02eab7078a32a2dcfd02ec4d550eb62c299fa860406b2d5975b0169fbecc877a"},"schema_version":"1.0","source":{"id":"2008.08485","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.08485","created_at":"2026-07-05T01:58:42Z"},{"alias_kind":"arxiv_version","alias_value":"2008.08485v1","created_at":"2026-07-05T01:58:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.08485","created_at":"2026-07-05T01:58:42Z"},{"alias_kind":"pith_short_12","alias_value":"NPOAGNDWHJAJ","created_at":"2026-07-05T01:58:42Z"},{"alias_kind":"pith_short_16","alias_value":"NPOAGNDWHJAJWSEW","created_at":"2026-07-05T01:58:42Z"},{"alias_kind":"pith_short_8","alias_value":"NPOAGNDW","created_at":"2026-07-05T01:58:42Z"}],"graph_snapshots":[{"event_id":"sha256:9884a16831f7b5ef5ce3a2ba4c7dc4f4049b98f0619554f5565b7f6d9b537f43","target":"graph","created_at":"2026-07-05T01:58:42Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2008.08485/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A new electron injection scheme is proposed in sub-relativistic plasma wakefield accelerators. A transverse laser ionizes a dopant gas and ponderomotively accelerates the released electrons in the direction of wake propagation. This process enables electron trapping in the wakefield even for a wakefield potential below the trapping threshold. We study the scheme theoretically and by means of particle-in-cell simulations to demonstrate high-quality beam formation and acceleration with sub-micrometer normalized emittances and sub-percent uncorrelated energy spreads.","authors_text":"Alberto Martinez de la Ossa, Jens Osterhoff, Ming Zeng","cross_cats":["physics.acc-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-08-19T14:55:02Z","title":"Ponderomotive Injection in Plasma Wakefield Accelerators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.08485","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":"sha256:9cf2d00ed00ae6b6584b53cff04cc3787a66e25f981644686e8e4d6d9324116d","target":"record","created_at":"2026-07-05T01:58:42Z","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":"c2758557e3bf1121e6c109862df6a5ba72eb966cdaba375466ab8028c66ef4c1","cross_cats_sorted":["physics.acc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-08-19T14:55:02Z","title_canon_sha256":"02eab7078a32a2dcfd02ec4d550eb62c299fa860406b2d5975b0169fbecc877a"},"schema_version":"1.0","source":{"id":"2008.08485","kind":"arxiv","version":1}},"canonical_sha256":"6bdc0334763a409b489640797496327f4bd341222c728c14d151144809556b30","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6bdc0334763a409b489640797496327f4bd341222c728c14d151144809556b30","first_computed_at":"2026-07-05T01:58:42.076293Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:58:42.076293Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"717Jg0Z2HurzYy9zF72qgZAdkF9b6uE+G1E2QD/0LVV3A9+ShOhhjhG6+R40fm4H/bB4NR2jSHepNXPFYvsqDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:58:42.076728Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.08485","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9cf2d00ed00ae6b6584b53cff04cc3787a66e25f981644686e8e4d6d9324116d","sha256:9884a16831f7b5ef5ce3a2ba4c7dc4f4049b98f0619554f5565b7f6d9b537f43"],"state_sha256":"7653e8a79a3c0af9f275aa8e484039ebd85967bc19e427e8c0893bb637aea046"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uK8RJp+3p7+4d0xfhNuNYVacw9fyruoh0vW9VuZGREW4ufsz8WW96dywgOHAh3pdWuBQN3hmRFDoWZudJm2dCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T18:55:10.168245Z","bundle_sha256":"2455c445c03c92e282e2dd7df5cf1882f21629c32f74115840cb667b7092f1bb"}}