{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:3IIN7YNKQPW75BUG6A6MZRRMZQ","short_pith_number":"pith:3IIN7YNK","canonical_record":{"source":{"id":"1210.0717","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2012-10-02T09:40:10Z","cross_cats_sorted":["physics.acc-ph"],"title_canon_sha256":"8a3c573359d8be5660530b19f2b04962c3e93c1b6f1e1adddc15d4172c050139","abstract_canon_sha256":"a2f3a23c686624c92e5e308fe92a596d9d098af3d422a1cb1eb5b3f0e45eea32"},"schema_version":"1.0"},"canonical_sha256":"da10dfe1aa83edfe8686f03cccc62ccc030ae3ce3b3d44c281d695a12482ba2a","source":{"kind":"arxiv","id":"1210.0717","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.0717","created_at":"2026-05-18T03:44:14Z"},{"alias_kind":"arxiv_version","alias_value":"1210.0717v1","created_at":"2026-05-18T03:44:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.0717","created_at":"2026-05-18T03:44:14Z"},{"alias_kind":"pith_short_12","alias_value":"3IIN7YNKQPW7","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"3IIN7YNKQPW75BUG","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"3IIN7YNK","created_at":"2026-05-18T12:26:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:3IIN7YNKQPW75BUG6A6MZRRMZQ","target":"record","payload":{"canonical_record":{"source":{"id":"1210.0717","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2012-10-02T09:40:10Z","cross_cats_sorted":["physics.acc-ph"],"title_canon_sha256":"8a3c573359d8be5660530b19f2b04962c3e93c1b6f1e1adddc15d4172c050139","abstract_canon_sha256":"a2f3a23c686624c92e5e308fe92a596d9d098af3d422a1cb1eb5b3f0e45eea32"},"schema_version":"1.0"},"canonical_sha256":"da10dfe1aa83edfe8686f03cccc62ccc030ae3ce3b3d44c281d695a12482ba2a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:44:14.398394Z","signature_b64":"/ZCO56H1h5aE68/sc/uumdj0iE6f31uNQ6CkGnFWA9KxDUakqrtgDD+B6B4bhMQHZY6L0rpvvGWLDHqc6+4UCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"da10dfe1aa83edfe8686f03cccc62ccc030ae3ce3b3d44c281d695a12482ba2a","last_reissued_at":"2026-05-18T03:44:14.397883Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:44:14.397883Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.0717","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":"2026-05-18T03:44:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Bqz/scEALM6a01PvAVgouSQeSQyT0Qu97puY4cfs2cjMTT/M5m6g3CeQ/GSAIDJbRJ2eyQhWixPA7gg8kKNFCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:45:45.023683Z"},"content_sha256":"48a40b7549e8b82180a2226420cf2e01b39a91cc54630f4577fbf8fb20fd0a17","schema_version":"1.0","event_id":"sha256:48a40b7549e8b82180a2226420cf2e01b39a91cc54630f4577fbf8fb20fd0a17"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:3IIN7YNKQPW75BUG6A6MZRRMZQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quasi-monoenergetic electron beams production in a sharp density transition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.acc-ph"],"primary_cat":"physics.plasm-ph","authors_text":"A. Rousse, G. Lebrun, J. C. Kieffer, K. Ta Phuoc, P. Lassonde, S. Corde, S. Fourmaux, V. Malka","submitted_at":"2012-10-02T09:40:10Z","abstract_excerpt":"Using a laser plasma accelerator, experiments with a 80 TW and 30 fs laser pulse demonstrated quasi-monoenergetic electron spectra with maximum energy over 0.4 GeV. This is achieved using a supersonic He gas jet and a sharp density ramp generated by a high intensity laser crossing pre-pulse focused 3 ns before the main laser pulse. By adjusting this crossing pre-pulse position inside the gas jet, among the laser shots with electron injection more than 40% can produce quasi-monoenergetic spectra. This could become a relatively straight forward technique to control laser wakefield electron beams"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.0717","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":"2026-05-18T03:44:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z3StVxz46F3LiCvhfWckLgy8AG11rYIIhvra4A/aZ9ZZwcxyGFjrryl9GYLzhVzF8iqivf7/uWxuXlHyEsOUCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:45:45.024435Z"},"content_sha256":"d758152ecd913930ae3b6be8dc06d70432802b3f7f2b1c0a974d6b29f56a6186","schema_version":"1.0","event_id":"sha256:d758152ecd913930ae3b6be8dc06d70432802b3f7f2b1c0a974d6b29f56a6186"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3IIN7YNKQPW75BUG6A6MZRRMZQ/bundle.json","state_url":"https://pith.science/pith/3IIN7YNKQPW75BUG6A6MZRRMZQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3IIN7YNKQPW75BUG6A6MZRRMZQ/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":"2026-06-01T04:45:45Z","links":{"resolver":"https://pith.science/pith/3IIN7YNKQPW75BUG6A6MZRRMZQ","bundle":"https://pith.science/pith/3IIN7YNKQPW75BUG6A6MZRRMZQ/bundle.json","state":"https://pith.science/pith/3IIN7YNKQPW75BUG6A6MZRRMZQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3IIN7YNKQPW75BUG6A6MZRRMZQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:3IIN7YNKQPW75BUG6A6MZRRMZQ","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":"a2f3a23c686624c92e5e308fe92a596d9d098af3d422a1cb1eb5b3f0e45eea32","cross_cats_sorted":["physics.acc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2012-10-02T09:40:10Z","title_canon_sha256":"8a3c573359d8be5660530b19f2b04962c3e93c1b6f1e1adddc15d4172c050139"},"schema_version":"1.0","source":{"id":"1210.0717","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.0717","created_at":"2026-05-18T03:44:14Z"},{"alias_kind":"arxiv_version","alias_value":"1210.0717v1","created_at":"2026-05-18T03:44:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.0717","created_at":"2026-05-18T03:44:14Z"},{"alias_kind":"pith_short_12","alias_value":"3IIN7YNKQPW7","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"3IIN7YNKQPW75BUG","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"3IIN7YNK","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:d758152ecd913930ae3b6be8dc06d70432802b3f7f2b1c0a974d6b29f56a6186","target":"graph","created_at":"2026-05-18T03:44:14Z","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":"Using a laser plasma accelerator, experiments with a 80 TW and 30 fs laser pulse demonstrated quasi-monoenergetic electron spectra with maximum energy over 0.4 GeV. This is achieved using a supersonic He gas jet and a sharp density ramp generated by a high intensity laser crossing pre-pulse focused 3 ns before the main laser pulse. By adjusting this crossing pre-pulse position inside the gas jet, among the laser shots with electron injection more than 40% can produce quasi-monoenergetic spectra. This could become a relatively straight forward technique to control laser wakefield electron beams","authors_text":"A. Rousse, G. Lebrun, J. C. Kieffer, K. Ta Phuoc, P. Lassonde, S. Corde, S. Fourmaux, V. Malka","cross_cats":["physics.acc-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2012-10-02T09:40:10Z","title":"Quasi-monoenergetic electron beams production in a sharp density transition"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.0717","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":"sha256:48a40b7549e8b82180a2226420cf2e01b39a91cc54630f4577fbf8fb20fd0a17","target":"record","created_at":"2026-05-18T03:44:14Z","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":"a2f3a23c686624c92e5e308fe92a596d9d098af3d422a1cb1eb5b3f0e45eea32","cross_cats_sorted":["physics.acc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2012-10-02T09:40:10Z","title_canon_sha256":"8a3c573359d8be5660530b19f2b04962c3e93c1b6f1e1adddc15d4172c050139"},"schema_version":"1.0","source":{"id":"1210.0717","kind":"arxiv","version":1}},"canonical_sha256":"da10dfe1aa83edfe8686f03cccc62ccc030ae3ce3b3d44c281d695a12482ba2a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"da10dfe1aa83edfe8686f03cccc62ccc030ae3ce3b3d44c281d695a12482ba2a","first_computed_at":"2026-05-18T03:44:14.397883Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:44:14.397883Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/ZCO56H1h5aE68/sc/uumdj0iE6f31uNQ6CkGnFWA9KxDUakqrtgDD+B6B4bhMQHZY6L0rpvvGWLDHqc6+4UCA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:44:14.398394Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.0717","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:48a40b7549e8b82180a2226420cf2e01b39a91cc54630f4577fbf8fb20fd0a17","sha256:d758152ecd913930ae3b6be8dc06d70432802b3f7f2b1c0a974d6b29f56a6186"],"state_sha256":"45e24e2dc54b452a895366a1e2d1d7b3a80f9073deee458087a39a2cfdb805ce"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"itB3LkPWt/D8Fz2MSHRyNb3uEa+RQgRw48nKP4z3HooyeydHIQImbo4DfYm+MsbwumGx6CpostoCK80+wAx8BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T04:45:45.028075Z","bundle_sha256":"70437220a5659cfc4084ab9abc219693757832985a88b4c9ed895f4f5bf833a9"}}