{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:URATIKU3JU2CZU2I6Z4SOCWNJU","short_pith_number":"pith:URATIKU3","canonical_record":{"source":{"id":"0911.1329","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2009-11-06T19:19:15Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"aadcf98752cfe8a982c75dbaec7a8016c1ef36efe0d01b337aa5db971ad0a94e","abstract_canon_sha256":"cadb22d7d3f5cc5ae99d061a68c54e1af9c1bc0603c7a29d4a366853ea87d01d"},"schema_version":"1.0"},"canonical_sha256":"a441342a9b4d342cd348f679270acd4d3e49e062f60a54db0a2535cefac72185","source":{"kind":"arxiv","id":"0911.1329","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.1329","created_at":"2026-05-18T02:10:58Z"},{"alias_kind":"arxiv_version","alias_value":"0911.1329v1","created_at":"2026-05-18T02:10:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.1329","created_at":"2026-05-18T02:10:58Z"},{"alias_kind":"pith_short_12","alias_value":"URATIKU3JU2C","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"URATIKU3JU2CZU2I","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"URATIKU3","created_at":"2026-05-18T12:26:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:URATIKU3JU2CZU2I6Z4SOCWNJU","target":"record","payload":{"canonical_record":{"source":{"id":"0911.1329","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2009-11-06T19:19:15Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"aadcf98752cfe8a982c75dbaec7a8016c1ef36efe0d01b337aa5db971ad0a94e","abstract_canon_sha256":"cadb22d7d3f5cc5ae99d061a68c54e1af9c1bc0603c7a29d4a366853ea87d01d"},"schema_version":"1.0"},"canonical_sha256":"a441342a9b4d342cd348f679270acd4d3e49e062f60a54db0a2535cefac72185","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:10:58.612464Z","signature_b64":"A0xnTNk1kX7DDXKLZggYDXuspIyM1E93gaYLWzGnwRcWY37RMVy86OP2JejGAmJCp/hqelNXMOZf7YH0jAEBAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a441342a9b4d342cd348f679270acd4d3e49e062f60a54db0a2535cefac72185","last_reissued_at":"2026-05-18T02:10:58.611469Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:10:58.611469Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0911.1329","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":"2026-05-18T02:10:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VMUmNOuIzPLDFiELUqoNbIOe18I45pNFHXvNErm5XiQ7JW5xFQibh0hX4CEa94LnpPw8x0o/1S83P3eiEj3aDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T13:36:52.870250Z"},"content_sha256":"c8e2e325453533804ba260579bbf124c5122dcb310672bfa78eca92635441767","schema_version":"1.0","event_id":"sha256:c8e2e325453533804ba260579bbf124c5122dcb310672bfa78eca92635441767"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:URATIKU3JU2CZU2I6Z4SOCWNJU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Integrated Atom Detector Based on Field Ionization near Carbon Nanotubes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"cond-mat.quant-gas","authors_text":"A. G\\\"unther, A. Stibor, B. Gr\\\"uner, D. Kern, G. Visanescu, J. Fort\\'agh, M. H\\\"affner, M. Jag","submitted_at":"2009-11-06T19:19:15Z","abstract_excerpt":"We demonstrate an atom detector based on field ionization and subsequent ion counting. We make use of field enhancement near tips of carbon nanotubes to reach extreme electrostatic field values of up to 9x10^9 V/m, which ionize ground state rubidium atoms. The detector is based on a carpet of multiwall carbon nanotubes grown on a substrate and used for field ionization, and a channel electron multiplier used for ion counting. We measure the field enhancement at the tips of carbon nanotubes by field emission of electrons. We demonstrate the operation of the field ionization detector by counting"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.1329","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":"2026-05-18T02:10:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fKZbCHcVUInzSsdH9tuqAOR+sI+FLFctytxf+xluxvscBfcxcVT0jdQucgjDELW+5drKOjkjcvPSw1jss0C2Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T13:36:52.870948Z"},"content_sha256":"eef94efb9442e6c4f851a7311d30797e6c368da54d6a5ab7bd7f8c977afe0f9e","schema_version":"1.0","event_id":"sha256:eef94efb9442e6c4f851a7311d30797e6c368da54d6a5ab7bd7f8c977afe0f9e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/URATIKU3JU2CZU2I6Z4SOCWNJU/bundle.json","state_url":"https://pith.science/pith/URATIKU3JU2CZU2I6Z4SOCWNJU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/URATIKU3JU2CZU2I6Z4SOCWNJU/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":"2026-05-28T13:36:52Z","links":{"resolver":"https://pith.science/pith/URATIKU3JU2CZU2I6Z4SOCWNJU","bundle":"https://pith.science/pith/URATIKU3JU2CZU2I6Z4SOCWNJU/bundle.json","state":"https://pith.science/pith/URATIKU3JU2CZU2I6Z4SOCWNJU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/URATIKU3JU2CZU2I6Z4SOCWNJU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:URATIKU3JU2CZU2I6Z4SOCWNJU","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":"cadb22d7d3f5cc5ae99d061a68c54e1af9c1bc0603c7a29d4a366853ea87d01d","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2009-11-06T19:19:15Z","title_canon_sha256":"aadcf98752cfe8a982c75dbaec7a8016c1ef36efe0d01b337aa5db971ad0a94e"},"schema_version":"1.0","source":{"id":"0911.1329","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.1329","created_at":"2026-05-18T02:10:58Z"},{"alias_kind":"arxiv_version","alias_value":"0911.1329v1","created_at":"2026-05-18T02:10:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.1329","created_at":"2026-05-18T02:10:58Z"},{"alias_kind":"pith_short_12","alias_value":"URATIKU3JU2C","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"URATIKU3JU2CZU2I","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"URATIKU3","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:eef94efb9442e6c4f851a7311d30797e6c368da54d6a5ab7bd7f8c977afe0f9e","target":"graph","created_at":"2026-05-18T02:10:58Z","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":"We demonstrate an atom detector based on field ionization and subsequent ion counting. We make use of field enhancement near tips of carbon nanotubes to reach extreme electrostatic field values of up to 9x10^9 V/m, which ionize ground state rubidium atoms. The detector is based on a carpet of multiwall carbon nanotubes grown on a substrate and used for field ionization, and a channel electron multiplier used for ion counting. We measure the field enhancement at the tips of carbon nanotubes by field emission of electrons. We demonstrate the operation of the field ionization detector by counting","authors_text":"A. G\\\"unther, A. Stibor, B. Gr\\\"uner, D. Kern, G. Visanescu, J. Fort\\'agh, M. H\\\"affner, M. Jag","cross_cats":["physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2009-11-06T19:19:15Z","title":"Integrated Atom Detector Based on Field Ionization near Carbon Nanotubes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.1329","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:c8e2e325453533804ba260579bbf124c5122dcb310672bfa78eca92635441767","target":"record","created_at":"2026-05-18T02:10:58Z","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":"cadb22d7d3f5cc5ae99d061a68c54e1af9c1bc0603c7a29d4a366853ea87d01d","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2009-11-06T19:19:15Z","title_canon_sha256":"aadcf98752cfe8a982c75dbaec7a8016c1ef36efe0d01b337aa5db971ad0a94e"},"schema_version":"1.0","source":{"id":"0911.1329","kind":"arxiv","version":1}},"canonical_sha256":"a441342a9b4d342cd348f679270acd4d3e49e062f60a54db0a2535cefac72185","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a441342a9b4d342cd348f679270acd4d3e49e062f60a54db0a2535cefac72185","first_computed_at":"2026-05-18T02:10:58.611469Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:10:58.611469Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A0xnTNk1kX7DDXKLZggYDXuspIyM1E93gaYLWzGnwRcWY37RMVy86OP2JejGAmJCp/hqelNXMOZf7YH0jAEBAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:10:58.612464Z","signed_message":"canonical_sha256_bytes"},"source_id":"0911.1329","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c8e2e325453533804ba260579bbf124c5122dcb310672bfa78eca92635441767","sha256:eef94efb9442e6c4f851a7311d30797e6c368da54d6a5ab7bd7f8c977afe0f9e"],"state_sha256":"43d11de34a16802e328f1f678b291c522bb7da425b5847bb881f7be4e189a798"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I27Fd+3fl1ShhiXNkh4CS0f5MT18Hp27OxKuUpWSdEmrwBLHJrQ7jnIG9HkdM5CiI6xsucpzIU7vXe4mxJkABw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T13:36:52.874045Z","bundle_sha256":"6a43fc1f76e621bbeb240df2c2cc1f831da9c8955f037b0c707d96a6668b88d0"}}