{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:4BH66YEUUWYJ3PRCICNJ3MUTCW","short_pith_number":"pith:4BH66YEU","canonical_record":{"source":{"id":"1802.00808","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-02-02T10:45:10Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"54041a3bfa6a41db61310a69e9981b8d7ad80fcd217a11c9cadee24c1a5d584b","abstract_canon_sha256":"a0e999986d1094197c682b79fd00fb8254a519775d0d5c6dc1b89e1a0945c5d3"},"schema_version":"1.0"},"canonical_sha256":"e04fef6094a5b09dbe22409a9db29315987d8afde9e6a2fbf54b2cb55912b890","source":{"kind":"arxiv","id":"1802.00808","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.00808","created_at":"2026-05-18T00:24:28Z"},{"alias_kind":"arxiv_version","alias_value":"1802.00808v1","created_at":"2026-05-18T00:24:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.00808","created_at":"2026-05-18T00:24:28Z"},{"alias_kind":"pith_short_12","alias_value":"4BH66YEUUWYJ","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"4BH66YEUUWYJ3PRC","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"4BH66YEU","created_at":"2026-05-18T12:32:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:4BH66YEUUWYJ3PRCICNJ3MUTCW","target":"record","payload":{"canonical_record":{"source":{"id":"1802.00808","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-02-02T10:45:10Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"54041a3bfa6a41db61310a69e9981b8d7ad80fcd217a11c9cadee24c1a5d584b","abstract_canon_sha256":"a0e999986d1094197c682b79fd00fb8254a519775d0d5c6dc1b89e1a0945c5d3"},"schema_version":"1.0"},"canonical_sha256":"e04fef6094a5b09dbe22409a9db29315987d8afde9e6a2fbf54b2cb55912b890","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:28.178301Z","signature_b64":"eBvM9c5iQmK1b7GCdG0RUJ12B7QHBVXjylxKQR0kf5dUrVMVHEMXDoNRWr9yVaQmlIPhtyWAF8gJoLawt1zyAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e04fef6094a5b09dbe22409a9db29315987d8afde9e6a2fbf54b2cb55912b890","last_reissued_at":"2026-05-18T00:24:28.177765Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:28.177765Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1802.00808","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":"2026-05-18T00:24:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Em50+IqHsQg7TjdNNLEvMV0jxbJMVpkDsCsd57/1aS+FuQo0yR0cCtM6iKqQMFgCQq7dRRI6aae1JrGB8amPAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T13:39:52.188605Z"},"content_sha256":"7182bf1f1b9f8dcd9f64c8cd3388d1f336fb0908c756369cc302ec36fa1a1281","schema_version":"1.0","event_id":"sha256:7182bf1f1b9f8dcd9f64c8cd3388d1f336fb0908c756369cc302ec36fa1a1281"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:4BH66YEUUWYJ3PRCICNJ3MUTCW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Decrease of transit-time broadening of spectral resonances by optical pumping of atoms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.atom-ph","authors_text":"Azad Ch. Izmailov","submitted_at":"2018-02-02T10:45:10Z","abstract_excerpt":"We propose the new method of essential decrease of transit-time broadening of Doppler-free absorption resonances on transitions between long-lived quantum levels of atoms (or molecules) of a rarefied gas medium. This method is based on preliminary optical pumping of the ground term of atoms (molecules) by additional radiation which is spatially separated from the recording light beam. The proposed method may be applied in atomic (molecular) spectroscopy of ultra high resolution and also in frequency and time standards."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.00808","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":"2026-05-18T00:24:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dWAk8+VrQXWLwEsODPe81CB6QU8e2uJWVarjW4kYj1jeM1sDiH3bTqARv5whCpiKJkfJyKWNwH0Ct69TqDroCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T13:39:52.188947Z"},"content_sha256":"054db40e8c8edab53d21684ffc0493811f79908734260651bc40905220946089","schema_version":"1.0","event_id":"sha256:054db40e8c8edab53d21684ffc0493811f79908734260651bc40905220946089"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4BH66YEUUWYJ3PRCICNJ3MUTCW/bundle.json","state_url":"https://pith.science/pith/4BH66YEUUWYJ3PRCICNJ3MUTCW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4BH66YEUUWYJ3PRCICNJ3MUTCW/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":"2026-06-29T13:39:52Z","links":{"resolver":"https://pith.science/pith/4BH66YEUUWYJ3PRCICNJ3MUTCW","bundle":"https://pith.science/pith/4BH66YEUUWYJ3PRCICNJ3MUTCW/bundle.json","state":"https://pith.science/pith/4BH66YEUUWYJ3PRCICNJ3MUTCW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4BH66YEUUWYJ3PRCICNJ3MUTCW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:4BH66YEUUWYJ3PRCICNJ3MUTCW","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":"a0e999986d1094197c682b79fd00fb8254a519775d0d5c6dc1b89e1a0945c5d3","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-02-02T10:45:10Z","title_canon_sha256":"54041a3bfa6a41db61310a69e9981b8d7ad80fcd217a11c9cadee24c1a5d584b"},"schema_version":"1.0","source":{"id":"1802.00808","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.00808","created_at":"2026-05-18T00:24:28Z"},{"alias_kind":"arxiv_version","alias_value":"1802.00808v1","created_at":"2026-05-18T00:24:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.00808","created_at":"2026-05-18T00:24:28Z"},{"alias_kind":"pith_short_12","alias_value":"4BH66YEUUWYJ","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"4BH66YEUUWYJ3PRC","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"4BH66YEU","created_at":"2026-05-18T12:32:05Z"}],"graph_snapshots":[{"event_id":"sha256:054db40e8c8edab53d21684ffc0493811f79908734260651bc40905220946089","target":"graph","created_at":"2026-05-18T00:24:28Z","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 propose the new method of essential decrease of transit-time broadening of Doppler-free absorption resonances on transitions between long-lived quantum levels of atoms (or molecules) of a rarefied gas medium. This method is based on preliminary optical pumping of the ground term of atoms (molecules) by additional radiation which is spatially separated from the recording light beam. The proposed method may be applied in atomic (molecular) spectroscopy of ultra high resolution and also in frequency and time standards.","authors_text":"Azad Ch. Izmailov","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-02-02T10:45:10Z","title":"Decrease of transit-time broadening of spectral resonances by optical pumping of atoms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.00808","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":"sha256:7182bf1f1b9f8dcd9f64c8cd3388d1f336fb0908c756369cc302ec36fa1a1281","target":"record","created_at":"2026-05-18T00:24:28Z","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":"a0e999986d1094197c682b79fd00fb8254a519775d0d5c6dc1b89e1a0945c5d3","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-02-02T10:45:10Z","title_canon_sha256":"54041a3bfa6a41db61310a69e9981b8d7ad80fcd217a11c9cadee24c1a5d584b"},"schema_version":"1.0","source":{"id":"1802.00808","kind":"arxiv","version":1}},"canonical_sha256":"e04fef6094a5b09dbe22409a9db29315987d8afde9e6a2fbf54b2cb55912b890","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e04fef6094a5b09dbe22409a9db29315987d8afde9e6a2fbf54b2cb55912b890","first_computed_at":"2026-05-18T00:24:28.177765Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:28.177765Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eBvM9c5iQmK1b7GCdG0RUJ12B7QHBVXjylxKQR0kf5dUrVMVHEMXDoNRWr9yVaQmlIPhtyWAF8gJoLawt1zyAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:28.178301Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.00808","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7182bf1f1b9f8dcd9f64c8cd3388d1f336fb0908c756369cc302ec36fa1a1281","sha256:054db40e8c8edab53d21684ffc0493811f79908734260651bc40905220946089"],"state_sha256":"03286fac3d312004dda8d174942288541e1693e40678e422d4ccf74b15d990df"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3NmV2IhgyW/BaBXGiLazU+bu9o1nR76uFVkbcmi00RyquL7ZjWDgttM5AQNfyca7VFtXXLD88EYw0LH7MfEuDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T13:39:52.190803Z","bundle_sha256":"52665a4053970c5669cfbe177b2515a5aff38ab1d41468f2ed25f1b1763147ee"}}