{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:QVVTPG45JDRQC55XLXY7YTB3YE","short_pith_number":"pith:QVVTPG45","canonical_record":{"source":{"id":"1705.09806","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-05-27T11:18:33Z","cross_cats_sorted":[],"title_canon_sha256":"cf43467c2e63705f5a3dbabaa4c61ad43977a8c50d2993b3b16432647f8691b7","abstract_canon_sha256":"afb384048a336e42f8def1640184e3bc3a0fdebd15ba55d92d378ec7c7d91f6d"},"schema_version":"1.0"},"canonical_sha256":"856b379b9d48e30177b75df1fc4c3bc10c668b0c60e322348bab936e1be11c57","source":{"kind":"arxiv","id":"1705.09806","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.09806","created_at":"2026-05-18T00:41:32Z"},{"alias_kind":"arxiv_version","alias_value":"1705.09806v1","created_at":"2026-05-18T00:41:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.09806","created_at":"2026-05-18T00:41:32Z"},{"alias_kind":"pith_short_12","alias_value":"QVVTPG45JDRQ","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"QVVTPG45JDRQC55X","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"QVVTPG45","created_at":"2026-05-18T12:31:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:QVVTPG45JDRQC55XLXY7YTB3YE","target":"record","payload":{"canonical_record":{"source":{"id":"1705.09806","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-05-27T11:18:33Z","cross_cats_sorted":[],"title_canon_sha256":"cf43467c2e63705f5a3dbabaa4c61ad43977a8c50d2993b3b16432647f8691b7","abstract_canon_sha256":"afb384048a336e42f8def1640184e3bc3a0fdebd15ba55d92d378ec7c7d91f6d"},"schema_version":"1.0"},"canonical_sha256":"856b379b9d48e30177b75df1fc4c3bc10c668b0c60e322348bab936e1be11c57","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:41:32.281484Z","signature_b64":"EdT85/gHim2aBGqeYPFI6tPQvMk+9PhP+RF58VMp2c/Va2nmBZecfDDgRS31Kg0WW2Yd04UP1MxrPWev81T6DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"856b379b9d48e30177b75df1fc4c3bc10c668b0c60e322348bab936e1be11c57","last_reissued_at":"2026-05-18T00:41:32.280900Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:41:32.280900Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.09806","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":"2026-05-18T00:41:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MLXIgDm9ZehIgodBJxgX67SuV2Zgr9VAycXffeUGsh6Kja4u039sm1mw4Wp2fqZOOfg4RIHr2Idv+DR0tus0Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T15:22:52.171011Z"},"content_sha256":"174f367ef457799dd1d058140b973d221cafc3ac2e56c6b858e0b3a45a9a19ef","schema_version":"1.0","event_id":"sha256:174f367ef457799dd1d058140b973d221cafc3ac2e56c6b858e0b3a45a9a19ef"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:QVVTPG45JDRQC55XLXY7YTB3YE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Experimental Observation of Electron-Acoustic Wave Propagation in Laboratory Plasma","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"Nikhil Chakrabarti, Rabindranath Pal, Satyajit Chowdhury, Subir Biswas","submitted_at":"2017-05-27T11:18:33Z","abstract_excerpt":"In the field of fundamental plasma waves, direct observation of electron-acoustic wave (EAW) propagation in laboratory plasmas remains a challenging problem, mainly because of heavy damping. In the MaPLE device, the wave is observed and seen to propagate with phase velocity $\\sim1.8$ times the electron thermal velocity. A small amount of cold, drifting electrons, with moderate bulk to cold temperature ratio ($\\approx 2 - 3$), is present in the device. It plays a crucial role in reducing the damping. Our calculation reveals that the drift relaxes the stringent condition on the temperature ratio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.09806","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":"2026-05-18T00:41:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kk5LiBnZAAb3KUvs7fVmOwvelJclGOtfbQ4rHriQ+yskNVrfz9gd9RIKTQm55s2bNd3QNqR2EtwvdeD/OboxAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T15:22:52.171373Z"},"content_sha256":"bbdac61b4a7c13483fc6bf67f86cc5cf00d44d7cf97649cadf47b8aa65955738","schema_version":"1.0","event_id":"sha256:bbdac61b4a7c13483fc6bf67f86cc5cf00d44d7cf97649cadf47b8aa65955738"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QVVTPG45JDRQC55XLXY7YTB3YE/bundle.json","state_url":"https://pith.science/pith/QVVTPG45JDRQC55XLXY7YTB3YE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QVVTPG45JDRQC55XLXY7YTB3YE/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":"2026-06-26T15:22:52Z","links":{"resolver":"https://pith.science/pith/QVVTPG45JDRQC55XLXY7YTB3YE","bundle":"https://pith.science/pith/QVVTPG45JDRQC55XLXY7YTB3YE/bundle.json","state":"https://pith.science/pith/QVVTPG45JDRQC55XLXY7YTB3YE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QVVTPG45JDRQC55XLXY7YTB3YE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:QVVTPG45JDRQC55XLXY7YTB3YE","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":"afb384048a336e42f8def1640184e3bc3a0fdebd15ba55d92d378ec7c7d91f6d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-05-27T11:18:33Z","title_canon_sha256":"cf43467c2e63705f5a3dbabaa4c61ad43977a8c50d2993b3b16432647f8691b7"},"schema_version":"1.0","source":{"id":"1705.09806","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.09806","created_at":"2026-05-18T00:41:32Z"},{"alias_kind":"arxiv_version","alias_value":"1705.09806v1","created_at":"2026-05-18T00:41:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.09806","created_at":"2026-05-18T00:41:32Z"},{"alias_kind":"pith_short_12","alias_value":"QVVTPG45JDRQ","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"QVVTPG45JDRQC55X","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"QVVTPG45","created_at":"2026-05-18T12:31:39Z"}],"graph_snapshots":[{"event_id":"sha256:bbdac61b4a7c13483fc6bf67f86cc5cf00d44d7cf97649cadf47b8aa65955738","target":"graph","created_at":"2026-05-18T00:41:32Z","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":"In the field of fundamental plasma waves, direct observation of electron-acoustic wave (EAW) propagation in laboratory plasmas remains a challenging problem, mainly because of heavy damping. In the MaPLE device, the wave is observed and seen to propagate with phase velocity $\\sim1.8$ times the electron thermal velocity. A small amount of cold, drifting electrons, with moderate bulk to cold temperature ratio ($\\approx 2 - 3$), is present in the device. It plays a crucial role in reducing the damping. Our calculation reveals that the drift relaxes the stringent condition on the temperature ratio","authors_text":"Nikhil Chakrabarti, Rabindranath Pal, Satyajit Chowdhury, Subir Biswas","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-05-27T11:18:33Z","title":"Experimental Observation of Electron-Acoustic Wave Propagation in Laboratory Plasma"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.09806","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":"sha256:174f367ef457799dd1d058140b973d221cafc3ac2e56c6b858e0b3a45a9a19ef","target":"record","created_at":"2026-05-18T00:41:32Z","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":"afb384048a336e42f8def1640184e3bc3a0fdebd15ba55d92d378ec7c7d91f6d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-05-27T11:18:33Z","title_canon_sha256":"cf43467c2e63705f5a3dbabaa4c61ad43977a8c50d2993b3b16432647f8691b7"},"schema_version":"1.0","source":{"id":"1705.09806","kind":"arxiv","version":1}},"canonical_sha256":"856b379b9d48e30177b75df1fc4c3bc10c668b0c60e322348bab936e1be11c57","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"856b379b9d48e30177b75df1fc4c3bc10c668b0c60e322348bab936e1be11c57","first_computed_at":"2026-05-18T00:41:32.280900Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:41:32.280900Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EdT85/gHim2aBGqeYPFI6tPQvMk+9PhP+RF58VMp2c/Va2nmBZecfDDgRS31Kg0WW2Yd04UP1MxrPWev81T6DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:41:32.281484Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.09806","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:174f367ef457799dd1d058140b973d221cafc3ac2e56c6b858e0b3a45a9a19ef","sha256:bbdac61b4a7c13483fc6bf67f86cc5cf00d44d7cf97649cadf47b8aa65955738"],"state_sha256":"9ec0853b5f5dbce3f1a0105c5f8932f58770eed5a30e218004ef070f6fb91140"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OGXvGxiTylO6s/vspgPmUw3C4rN1ZtASTRQwpYByKthcnvqIUzCX/Q60k/1tkhdMDZhO5IxMb5DKNwpmNz/zBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T15:22:52.173343Z","bundle_sha256":"3395536b044e511011bd3cbc6d70838618bc43e4dc4a0bf57ca4fac1ad78247e"}}