{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:KKNFSWYNCGMBWC7KVMGXW6KXYY","short_pith_number":"pith:KKNFSWYN","canonical_record":{"source":{"id":"1008.3228","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2010-08-19T06:58:23Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"5e0b80e5e8777d7f8399666ff5e7a46ecdc6075dc012f44e54a870f1fda849a0","abstract_canon_sha256":"ac7cfe720b29ec3d8dcf2784e42b1c00a82223145c9ed70c94f3e22acb46a861"},"schema_version":"1.0"},"canonical_sha256":"529a595b0d11981b0beaab0d7b7957c630728951b5ef6ca3c39dcead151c629a","source":{"kind":"arxiv","id":"1008.3228","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.3228","created_at":"2026-05-18T02:05:46Z"},{"alias_kind":"arxiv_version","alias_value":"1008.3228v1","created_at":"2026-05-18T02:05:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.3228","created_at":"2026-05-18T02:05:46Z"},{"alias_kind":"pith_short_12","alias_value":"KKNFSWYNCGMB","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"KKNFSWYNCGMBWC7K","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"KKNFSWYN","created_at":"2026-05-18T12:26:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:KKNFSWYNCGMBWC7KVMGXW6KXYY","target":"record","payload":{"canonical_record":{"source":{"id":"1008.3228","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2010-08-19T06:58:23Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"5e0b80e5e8777d7f8399666ff5e7a46ecdc6075dc012f44e54a870f1fda849a0","abstract_canon_sha256":"ac7cfe720b29ec3d8dcf2784e42b1c00a82223145c9ed70c94f3e22acb46a861"},"schema_version":"1.0"},"canonical_sha256":"529a595b0d11981b0beaab0d7b7957c630728951b5ef6ca3c39dcead151c629a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:05:46.712436Z","signature_b64":"NXGYde3pRhV/yR//p9zhzlYBk0J7sKADQFQ+NiK9Llk0Bo19xBtbfpsHiveCK4FBXidQcjbp3T84LA+ALTtmCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"529a595b0d11981b0beaab0d7b7957c630728951b5ef6ca3c39dcead151c629a","last_reissued_at":"2026-05-18T02:05:46.711714Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:05:46.711714Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1008.3228","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":"2026-05-18T02:05:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3dcoI2CsBME6Vbv9GUfxtOd8uPoOEh60myHCQoifMkblovp65vIr7XnvWbFW7GpcxLUldoGsewlhP/f6Ac+WCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T05:38:51.880888Z"},"content_sha256":"cbbb1f3f2ce7ae6b313995fad3d84c5f50416988f06c71f8bd900b92518d9b30","schema_version":"1.0","event_id":"sha256:cbbb1f3f2ce7ae6b313995fad3d84c5f50416988f06c71f8bd900b92518d9b30"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:KKNFSWYNCGMBWC7KVMGXW6KXYY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Precise measurement of hyperfine structure in the ${2P}_{1/2}$ state of $^{7}$Li using saturated-absorption spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.atom-ph","authors_text":"Alok K. Singh, Lal Muanzuala, Vasant Natarajan","submitted_at":"2010-08-19T06:58:23Z","abstract_excerpt":"We report a precise measurement of the hyperfine interval in the ${2P}_{1/2}$ state of $^{7}$Li. The transition from the ground state ($D_1$ line) is accessed using a diode laser and the technique of saturated-absorption spectroscopy in hot Li vapor. The interval is measured by locking an acousto-optic modulator to the frequency difference between the two hyperfine peaks. The measured interval of 92.040(6)~MHz is consistent with an earlier measurement reported by us using an atomic-beam spectrometer [Das and Natarajan, J.\\ Phys.\\ B {\\bf 41}, 035001 (2008)]. The interval yields the magnetic dip"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.3228","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":"2026-05-18T02:05:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DTg8JtmAtUqRU+k2CER8zG3T3XSDsIYzf9i3Bg+SLtGRoXiR68tspLB/eoxHVzib9vQeIbsPxbRAQoa+QwlmDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T05:38:51.881236Z"},"content_sha256":"ca8f5f9f0228b3beb26186054f3459812760f4ab3bad9d14096f72035271cce0","schema_version":"1.0","event_id":"sha256:ca8f5f9f0228b3beb26186054f3459812760f4ab3bad9d14096f72035271cce0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KKNFSWYNCGMBWC7KVMGXW6KXYY/bundle.json","state_url":"https://pith.science/pith/KKNFSWYNCGMBWC7KVMGXW6KXYY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KKNFSWYNCGMBWC7KVMGXW6KXYY/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":"2026-06-03T05:38:51Z","links":{"resolver":"https://pith.science/pith/KKNFSWYNCGMBWC7KVMGXW6KXYY","bundle":"https://pith.science/pith/KKNFSWYNCGMBWC7KVMGXW6KXYY/bundle.json","state":"https://pith.science/pith/KKNFSWYNCGMBWC7KVMGXW6KXYY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KKNFSWYNCGMBWC7KVMGXW6KXYY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:KKNFSWYNCGMBWC7KVMGXW6KXYY","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":"ac7cfe720b29ec3d8dcf2784e42b1c00a82223145c9ed70c94f3e22acb46a861","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2010-08-19T06:58:23Z","title_canon_sha256":"5e0b80e5e8777d7f8399666ff5e7a46ecdc6075dc012f44e54a870f1fda849a0"},"schema_version":"1.0","source":{"id":"1008.3228","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.3228","created_at":"2026-05-18T02:05:46Z"},{"alias_kind":"arxiv_version","alias_value":"1008.3228v1","created_at":"2026-05-18T02:05:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.3228","created_at":"2026-05-18T02:05:46Z"},{"alias_kind":"pith_short_12","alias_value":"KKNFSWYNCGMB","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"KKNFSWYNCGMBWC7K","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"KKNFSWYN","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:ca8f5f9f0228b3beb26186054f3459812760f4ab3bad9d14096f72035271cce0","target":"graph","created_at":"2026-05-18T02:05:46Z","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 report a precise measurement of the hyperfine interval in the ${2P}_{1/2}$ state of $^{7}$Li. The transition from the ground state ($D_1$ line) is accessed using a diode laser and the technique of saturated-absorption spectroscopy in hot Li vapor. The interval is measured by locking an acousto-optic modulator to the frequency difference between the two hyperfine peaks. The measured interval of 92.040(6)~MHz is consistent with an earlier measurement reported by us using an atomic-beam spectrometer [Das and Natarajan, J.\\ Phys.\\ B {\\bf 41}, 035001 (2008)]. The interval yields the magnetic dip","authors_text":"Alok K. Singh, Lal Muanzuala, Vasant Natarajan","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2010-08-19T06:58:23Z","title":"Precise measurement of hyperfine structure in the ${2P}_{1/2}$ state of $^{7}$Li using saturated-absorption spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.3228","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:cbbb1f3f2ce7ae6b313995fad3d84c5f50416988f06c71f8bd900b92518d9b30","target":"record","created_at":"2026-05-18T02:05:46Z","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":"ac7cfe720b29ec3d8dcf2784e42b1c00a82223145c9ed70c94f3e22acb46a861","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2010-08-19T06:58:23Z","title_canon_sha256":"5e0b80e5e8777d7f8399666ff5e7a46ecdc6075dc012f44e54a870f1fda849a0"},"schema_version":"1.0","source":{"id":"1008.3228","kind":"arxiv","version":1}},"canonical_sha256":"529a595b0d11981b0beaab0d7b7957c630728951b5ef6ca3c39dcead151c629a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"529a595b0d11981b0beaab0d7b7957c630728951b5ef6ca3c39dcead151c629a","first_computed_at":"2026-05-18T02:05:46.711714Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:46.711714Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NXGYde3pRhV/yR//p9zhzlYBk0J7sKADQFQ+NiK9Llk0Bo19xBtbfpsHiveCK4FBXidQcjbp3T84LA+ALTtmCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:46.712436Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.3228","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cbbb1f3f2ce7ae6b313995fad3d84c5f50416988f06c71f8bd900b92518d9b30","sha256:ca8f5f9f0228b3beb26186054f3459812760f4ab3bad9d14096f72035271cce0"],"state_sha256":"ff9e6140a77c10c5715eaddc3cb6c0e782b328979f6aa25b08e36c9a6cfda291"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GmuzblO4ZQItdg/nIR9Fmae0EirTlvPEz/ZuPXPMgrN5wzhAu/4vU6JQtnAJvrzEP72Ge096iRI/B3p2jWi6BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T05:38:51.883292Z","bundle_sha256":"499d926fe3d79106c630e0e6c9e710b36fdbe4e9013a848ff570d8c0a05b4c5d"}}