{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:H5YYH5EPXC2CP22GPCENWCHRRS","short_pith_number":"pith:H5YYH5EP","canonical_record":{"source":{"id":"2006.05136","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-06-09T09:22:53Z","cross_cats_sorted":[],"title_canon_sha256":"3129c465e3d3d5064b267d4e120ac987c4cf1a0ca5b14b0b414147502373d632","abstract_canon_sha256":"b477baad4a24ec7476b6e6b9c65ec4c6580767f94ee85eda5a541e8564df9140"},"schema_version":"1.0"},"canonical_sha256":"3f7183f48fb8b427eb467888db08f18cb7c0b704be7f94633eaab8580460ee25","source":{"kind":"arxiv","id":"2006.05136","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.05136","created_at":"2026-07-05T01:30:05Z"},{"alias_kind":"arxiv_version","alias_value":"2006.05136v1","created_at":"2026-07-05T01:30:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.05136","created_at":"2026-07-05T01:30:05Z"},{"alias_kind":"pith_short_12","alias_value":"H5YYH5EPXC2C","created_at":"2026-07-05T01:30:05Z"},{"alias_kind":"pith_short_16","alias_value":"H5YYH5EPXC2CP22G","created_at":"2026-07-05T01:30:05Z"},{"alias_kind":"pith_short_8","alias_value":"H5YYH5EP","created_at":"2026-07-05T01:30:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:H5YYH5EPXC2CP22GPCENWCHRRS","target":"record","payload":{"canonical_record":{"source":{"id":"2006.05136","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-06-09T09:22:53Z","cross_cats_sorted":[],"title_canon_sha256":"3129c465e3d3d5064b267d4e120ac987c4cf1a0ca5b14b0b414147502373d632","abstract_canon_sha256":"b477baad4a24ec7476b6e6b9c65ec4c6580767f94ee85eda5a541e8564df9140"},"schema_version":"1.0"},"canonical_sha256":"3f7183f48fb8b427eb467888db08f18cb7c0b704be7f94633eaab8580460ee25","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:30:05.843767Z","signature_b64":"i/v6Y5cBJ7X8iDlI1w9pQKw0X23QC9OXSPNlrbqjv86D2MEloMGjngRF7Zdou64pRajL90muTi7CEhtfGB4mCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3f7183f48fb8b427eb467888db08f18cb7c0b704be7f94633eaab8580460ee25","last_reissued_at":"2026-07-05T01:30:05.843346Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:30:05.843346Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.05136","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":"2026-07-05T01:30:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EaVnktyGi/FMK1EKD7ENX+2087Hr9fAgIerRvE/Hmc8/pm78lvR2zeyjRIoImZAmgK6p3pyFRlnqazobF2JaDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T03:11:23.737738Z"},"content_sha256":"76dc645bbdead3af12c06cbbd81443ff6b176d8ef6e23cf6d9f7d02bdce4b2a6","schema_version":"1.0","event_id":"sha256:76dc645bbdead3af12c06cbbd81443ff6b176d8ef6e23cf6d9f7d02bdce4b2a6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:H5YYH5EPXC2CP22GPCENWCHRRS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Collisionless ion modeling in Hall thrusters: analytical axial velocity distribution function and heat flux closures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"Alejandro Alvarez-Laguna, Anne Bourdon, Pascal Chabert, Stefano Boccelli, Thierry E. Magin, Thomas Charoi","submitted_at":"2020-06-09T09:22:53Z","abstract_excerpt":"The genesis of the ion axial velocity distribution function (VDF) is analyzed for collisionless Hall thruster discharges. An analytical form for the VDF is obtained from the Vlasov equation, by applying the Tonks-Langmuir theory in the thruster channel, under the simplifying assumptions of monoenergetic creation of ions and steady state. The equivalent set of 1D unsteady anisotropic moment equations is derived from the Vlasov equation, and simple phenomenological closures are formulated, assuming a polynomial shape for the ions VDF. The analytical results and the anisotropic moment equations a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.05136","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/2006.05136/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":"2026-07-05T01:30:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HIURKX97JeXpg3N7Srdj5SPYYE9ka8yoG3kQcm/sG8N4IX08cVn2lKi/vwFzz+b5C1hgzuPxqIAJpeHzgqopAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T03:11:23.738109Z"},"content_sha256":"2e54e5edf21a9a48a6f49b66deef654f56da079c0b849c0e01f72306c237959c","schema_version":"1.0","event_id":"sha256:2e54e5edf21a9a48a6f49b66deef654f56da079c0b849c0e01f72306c237959c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H5YYH5EPXC2CP22GPCENWCHRRS/bundle.json","state_url":"https://pith.science/pith/H5YYH5EPXC2CP22GPCENWCHRRS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H5YYH5EPXC2CP22GPCENWCHRRS/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":"2026-07-09T03:11:23Z","links":{"resolver":"https://pith.science/pith/H5YYH5EPXC2CP22GPCENWCHRRS","bundle":"https://pith.science/pith/H5YYH5EPXC2CP22GPCENWCHRRS/bundle.json","state":"https://pith.science/pith/H5YYH5EPXC2CP22GPCENWCHRRS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H5YYH5EPXC2CP22GPCENWCHRRS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:H5YYH5EPXC2CP22GPCENWCHRRS","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":"b477baad4a24ec7476b6e6b9c65ec4c6580767f94ee85eda5a541e8564df9140","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-06-09T09:22:53Z","title_canon_sha256":"3129c465e3d3d5064b267d4e120ac987c4cf1a0ca5b14b0b414147502373d632"},"schema_version":"1.0","source":{"id":"2006.05136","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.05136","created_at":"2026-07-05T01:30:05Z"},{"alias_kind":"arxiv_version","alias_value":"2006.05136v1","created_at":"2026-07-05T01:30:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.05136","created_at":"2026-07-05T01:30:05Z"},{"alias_kind":"pith_short_12","alias_value":"H5YYH5EPXC2C","created_at":"2026-07-05T01:30:05Z"},{"alias_kind":"pith_short_16","alias_value":"H5YYH5EPXC2CP22G","created_at":"2026-07-05T01:30:05Z"},{"alias_kind":"pith_short_8","alias_value":"H5YYH5EP","created_at":"2026-07-05T01:30:05Z"}],"graph_snapshots":[{"event_id":"sha256:2e54e5edf21a9a48a6f49b66deef654f56da079c0b849c0e01f72306c237959c","target":"graph","created_at":"2026-07-05T01:30:05Z","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/2006.05136/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The genesis of the ion axial velocity distribution function (VDF) is analyzed for collisionless Hall thruster discharges. An analytical form for the VDF is obtained from the Vlasov equation, by applying the Tonks-Langmuir theory in the thruster channel, under the simplifying assumptions of monoenergetic creation of ions and steady state. The equivalent set of 1D unsteady anisotropic moment equations is derived from the Vlasov equation, and simple phenomenological closures are formulated, assuming a polynomial shape for the ions VDF. The analytical results and the anisotropic moment equations a","authors_text":"Alejandro Alvarez-Laguna, Anne Bourdon, Pascal Chabert, Stefano Boccelli, Thierry E. Magin, Thomas Charoi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-06-09T09:22:53Z","title":"Collisionless ion modeling in Hall thrusters: analytical axial velocity distribution function and heat flux closures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.05136","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":"sha256:76dc645bbdead3af12c06cbbd81443ff6b176d8ef6e23cf6d9f7d02bdce4b2a6","target":"record","created_at":"2026-07-05T01:30:05Z","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":"b477baad4a24ec7476b6e6b9c65ec4c6580767f94ee85eda5a541e8564df9140","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-06-09T09:22:53Z","title_canon_sha256":"3129c465e3d3d5064b267d4e120ac987c4cf1a0ca5b14b0b414147502373d632"},"schema_version":"1.0","source":{"id":"2006.05136","kind":"arxiv","version":1}},"canonical_sha256":"3f7183f48fb8b427eb467888db08f18cb7c0b704be7f94633eaab8580460ee25","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3f7183f48fb8b427eb467888db08f18cb7c0b704be7f94633eaab8580460ee25","first_computed_at":"2026-07-05T01:30:05.843346Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:30:05.843346Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"i/v6Y5cBJ7X8iDlI1w9pQKw0X23QC9OXSPNlrbqjv86D2MEloMGjngRF7Zdou64pRajL90muTi7CEhtfGB4mCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:30:05.843767Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.05136","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:76dc645bbdead3af12c06cbbd81443ff6b176d8ef6e23cf6d9f7d02bdce4b2a6","sha256:2e54e5edf21a9a48a6f49b66deef654f56da079c0b849c0e01f72306c237959c"],"state_sha256":"7f39809411b4a060c8a92031501c34721e57e36a185275b91987cbbe6860818e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wF+UZBdjufGTBbn43OTcwn8/jfP5ApbkyHekT4ib7uwHrBkybGjvjVDNrLW5ymwHbG5MbQMXINUs6+cnId92BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-09T03:11:23.740036Z","bundle_sha256":"c5b7f84907bc9ef100e7dad67787f15672b5234a7b94f00c89860a6ed4557512"}}