{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:DGF4AZTXTKRVIRKHZWPQ3FWOXX","short_pith_number":"pith:DGF4AZTX","canonical_record":{"source":{"id":"2108.09697","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-08-22T12:08:01Z","cross_cats_sorted":[],"title_canon_sha256":"2ae0714e1c0088becd9f5143d55d8f49aab3f184c19d523a376528ef70d30544","abstract_canon_sha256":"76940b62b8c1b3fb76e04d21aa274ac0a88c2e4f4c434c876f27f4df8bbb79bc"},"schema_version":"1.0"},"canonical_sha256":"198bc066779aa3544547cd9f0d96cebdd155bbe40339c1b443aafb25764b08bf","source":{"kind":"arxiv","id":"2108.09697","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.09697","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"arxiv_version","alias_value":"2108.09697v3","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.09697","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"pith_short_12","alias_value":"DGF4AZTXTKRV","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"pith_short_16","alias_value":"DGF4AZTXTKRVIRKH","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"pith_short_8","alias_value":"DGF4AZTX","created_at":"2026-07-05T03:11:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:DGF4AZTXTKRVIRKHZWPQ3FWOXX","target":"record","payload":{"canonical_record":{"source":{"id":"2108.09697","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-08-22T12:08:01Z","cross_cats_sorted":[],"title_canon_sha256":"2ae0714e1c0088becd9f5143d55d8f49aab3f184c19d523a376528ef70d30544","abstract_canon_sha256":"76940b62b8c1b3fb76e04d21aa274ac0a88c2e4f4c434c876f27f4df8bbb79bc"},"schema_version":"1.0"},"canonical_sha256":"198bc066779aa3544547cd9f0d96cebdd155bbe40339c1b443aafb25764b08bf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:11:06.412604Z","signature_b64":"nSsYg9rKJ+9pFoTxQMZEEMow/RfkTNi9tD0/A+5cPcSXzoGUcMwujq9rLJKpEYQeRKcV4ap2q0R9qO1Vy7UJAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"198bc066779aa3544547cd9f0d96cebdd155bbe40339c1b443aafb25764b08bf","last_reissued_at":"2026-07-05T03:11:06.412126Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:11:06.412126Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2108.09697","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:11:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hl2noqG9+El3vQCBj34kgUtbCudzLxrKX6uk1knjoSrJhkK7DXJeDps+PznY/XjJ5knO43tFwE49B7M1skaEBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T19:57:17.567716Z"},"content_sha256":"66dd83a869a331e2ca66c70b585d42e77cacb1cf825a05668415e6c62430009d","schema_version":"1.0","event_id":"sha256:66dd83a869a331e2ca66c70b585d42e77cacb1cf825a05668415e6c62430009d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:DGF4AZTXTKRVIRKHZWPQ3FWOXX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation of a strong correlation between the positive floating potential near the edge and plasma current on EXL-50 ECW plasma","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"Bing Liu, Debabrata Banerjee, Dong Guo, Hongfei Du, Mingyuan Wang, Shaodong Song, Songjian Li, Tiantian Sun, Wenjun Liu, Xiaomin Tian, Xin Zhao, Yingying Li, Y. -K Martin Peng (and the ENN team), Yuejiang Shi, Yunyang Song","submitted_at":"2021-08-22T12:08:01Z","abstract_excerpt":"Fully non-inductive plasma current start-up without the central solenoid in ECW plasma was used on EXL-50 Spherical Torus with a weak external vertical field (Bv). Generally, the number of electrons leaving to the vessel wall by the gradient Bt is larger than ions, and the positive potential was built up in plasma. The relationship between floating potential and the plasma current was studied using the Langmuir probes near the boundary. The results show that the floating potential is positive (about 200V) and has a strong correlation with plasma current. In open magnetic field, the plasma curr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.09697","kind":"arxiv","version":3},"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/2108.09697/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":"2026-07-05T03:11:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gsqr90I9EKSURL/qCqgbNwHfmHwOzcIUVxHmut7F/qIzz+wbptp1H2bjlpavB8DtlO1nRmrJl2Fl1FRzQHYOBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T19:57:17.568272Z"},"content_sha256":"562df390f6fd2c737b09e15bc623f38746dd1538e67edad72623e5a6441acbaa","schema_version":"1.0","event_id":"sha256:562df390f6fd2c737b09e15bc623f38746dd1538e67edad72623e5a6441acbaa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DGF4AZTXTKRVIRKHZWPQ3FWOXX/bundle.json","state_url":"https://pith.science/pith/DGF4AZTXTKRVIRKHZWPQ3FWOXX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DGF4AZTXTKRVIRKHZWPQ3FWOXX/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":"2026-08-17T19:57:17Z","links":{"resolver":"https://pith.science/pith/DGF4AZTXTKRVIRKHZWPQ3FWOXX","bundle":"https://pith.science/pith/DGF4AZTXTKRVIRKHZWPQ3FWOXX/bundle.json","state":"https://pith.science/pith/DGF4AZTXTKRVIRKHZWPQ3FWOXX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DGF4AZTXTKRVIRKHZWPQ3FWOXX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:DGF4AZTXTKRVIRKHZWPQ3FWOXX","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":"76940b62b8c1b3fb76e04d21aa274ac0a88c2e4f4c434c876f27f4df8bbb79bc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-08-22T12:08:01Z","title_canon_sha256":"2ae0714e1c0088becd9f5143d55d8f49aab3f184c19d523a376528ef70d30544"},"schema_version":"1.0","source":{"id":"2108.09697","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.09697","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"arxiv_version","alias_value":"2108.09697v3","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.09697","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"pith_short_12","alias_value":"DGF4AZTXTKRV","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"pith_short_16","alias_value":"DGF4AZTXTKRVIRKH","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"pith_short_8","alias_value":"DGF4AZTX","created_at":"2026-07-05T03:11:06Z"}],"graph_snapshots":[{"event_id":"sha256:562df390f6fd2c737b09e15bc623f38746dd1538e67edad72623e5a6441acbaa","target":"graph","created_at":"2026-07-05T03:11:06Z","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/2108.09697/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Fully non-inductive plasma current start-up without the central solenoid in ECW plasma was used on EXL-50 Spherical Torus with a weak external vertical field (Bv). Generally, the number of electrons leaving to the vessel wall by the gradient Bt is larger than ions, and the positive potential was built up in plasma. The relationship between floating potential and the plasma current was studied using the Langmuir probes near the boundary. The results show that the floating potential is positive (about 200V) and has a strong correlation with plasma current. In open magnetic field, the plasma curr","authors_text":"Bing Liu, Debabrata Banerjee, Dong Guo, Hongfei Du, Mingyuan Wang, Shaodong Song, Songjian Li, Tiantian Sun, Wenjun Liu, Xiaomin Tian, Xin Zhao, Yingying Li, Y. -K Martin Peng (and the ENN team), Yuejiang Shi, Yunyang Song","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-08-22T12:08:01Z","title":"Observation of a strong correlation between the positive floating potential near the edge and plasma current on EXL-50 ECW plasma"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.09697","kind":"arxiv","version":3},"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":"sha256:66dd83a869a331e2ca66c70b585d42e77cacb1cf825a05668415e6c62430009d","target":"record","created_at":"2026-07-05T03:11:06Z","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":"76940b62b8c1b3fb76e04d21aa274ac0a88c2e4f4c434c876f27f4df8bbb79bc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-08-22T12:08:01Z","title_canon_sha256":"2ae0714e1c0088becd9f5143d55d8f49aab3f184c19d523a376528ef70d30544"},"schema_version":"1.0","source":{"id":"2108.09697","kind":"arxiv","version":3}},"canonical_sha256":"198bc066779aa3544547cd9f0d96cebdd155bbe40339c1b443aafb25764b08bf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"198bc066779aa3544547cd9f0d96cebdd155bbe40339c1b443aafb25764b08bf","first_computed_at":"2026-07-05T03:11:06.412126Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:11:06.412126Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nSsYg9rKJ+9pFoTxQMZEEMow/RfkTNi9tD0/A+5cPcSXzoGUcMwujq9rLJKpEYQeRKcV4ap2q0R9qO1Vy7UJAw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:11:06.412604Z","signed_message":"canonical_sha256_bytes"},"source_id":"2108.09697","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:66dd83a869a331e2ca66c70b585d42e77cacb1cf825a05668415e6c62430009d","sha256:562df390f6fd2c737b09e15bc623f38746dd1538e67edad72623e5a6441acbaa"],"state_sha256":"2df32018dc00e9694102a57224068c1254b7aa2103539bedd984fa7e70eea117"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KNuS7YDRmujPe15KVZBxBHGHH2AFr7XCLY0tAqMNEfPiSQHCil+7VpNm5mv+vPqTsdqrfqxGNtN5R2SA8q6BBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T19:57:17.575201Z","bundle_sha256":"428c777e972b7de85dee8a1ebfa31bee2ef2cc8d0b107367e179b8925aebca1e"}}