{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:4RGIYKWLLIACC432OKW7K4EZF3","short_pith_number":"pith:4RGIYKWL","schema_version":"1.0","canonical_sha256":"e44c8c2acb5a0021737a72adf570992ef89f64a526fe31600396959371784187","source":{"kind":"arxiv","id":"1202.3067","version":1},"attestation_state":"computed","paper":{"title":"Atomic trajectory characterization in a fountain clock based on the spectrum of a hyperfine transition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Nils Nemitz, Robert Wynands, Stefan Weyers, Vladislav Gerginov","submitted_at":"2012-02-14T15:39:00Z","abstract_excerpt":"We describe a new method to determine the position of the atomic cloud during its interaction with the microwave field in the cavity of a fountain clock. The positional information is extracted from the spectrum of the F=3,mF=0 to F=4,mF=-1 hyperfine transition, which shows a position dependent asymmetry when the magnetic C-field is tilted by a few degrees with respect to the cavity axis. Analysis of this spectral asymmetry provides the horizontal center-of-mass position for the ensemble of atoms contributing to frequency measurements. With an uncertainty on the order of 0.1 mm, the obtained i"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1202.3067","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-02-14T15:39:00Z","cross_cats_sorted":[],"title_canon_sha256":"08a0b57d55b0c0cd48c7b7bdd545c7222f949fbe1747095b920688a3a9a39663","abstract_canon_sha256":"42504c30f9b4d68e0ede8bb86987703ee0216a8ec89cd681350af141a532bc11"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:28.615349Z","signature_b64":"v12Izidsg/IKQ+6pD0m+I2mnugbDjDWEzm2LakpKlpzf5qiEj/cxvUD7WOcXZWmMoAkR/Q23lO4D9aLZekcJCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e44c8c2acb5a0021737a72adf570992ef89f64a526fe31600396959371784187","last_reissued_at":"2026-05-18T01:58:28.614672Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:28.614672Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Atomic trajectory characterization in a fountain clock based on the spectrum of a hyperfine transition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Nils Nemitz, Robert Wynands, Stefan Weyers, Vladislav Gerginov","submitted_at":"2012-02-14T15:39:00Z","abstract_excerpt":"We describe a new method to determine the position of the atomic cloud during its interaction with the microwave field in the cavity of a fountain clock. The positional information is extracted from the spectrum of the F=3,mF=0 to F=4,mF=-1 hyperfine transition, which shows a position dependent asymmetry when the magnetic C-field is tilted by a few degrees with respect to the cavity axis. Analysis of this spectral asymmetry provides the horizontal center-of-mass position for the ensemble of atoms contributing to frequency measurements. With an uncertainty on the order of 0.1 mm, the obtained i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.3067","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1202.3067","created_at":"2026-05-18T01:58:28.614782+00:00"},{"alias_kind":"arxiv_version","alias_value":"1202.3067v1","created_at":"2026-05-18T01:58:28.614782+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.3067","created_at":"2026-05-18T01:58:28.614782+00:00"},{"alias_kind":"pith_short_12","alias_value":"4RGIYKWLLIAC","created_at":"2026-05-18T12:26:53.410803+00:00"},{"alias_kind":"pith_short_16","alias_value":"4RGIYKWLLIACC432","created_at":"2026-05-18T12:26:53.410803+00:00"},{"alias_kind":"pith_short_8","alias_value":"4RGIYKWL","created_at":"2026-05-18T12:26:53.410803+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/4RGIYKWLLIACC432OKW7K4EZF3","json":"https://pith.science/pith/4RGIYKWLLIACC432OKW7K4EZF3.json","graph_json":"https://pith.science/api/pith-number/4RGIYKWLLIACC432OKW7K4EZF3/graph.json","events_json":"https://pith.science/api/pith-number/4RGIYKWLLIACC432OKW7K4EZF3/events.json","paper":"https://pith.science/paper/4RGIYKWL"},"agent_actions":{"view_html":"https://pith.science/pith/4RGIYKWLLIACC432OKW7K4EZF3","download_json":"https://pith.science/pith/4RGIYKWLLIACC432OKW7K4EZF3.json","view_paper":"https://pith.science/paper/4RGIYKWL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1202.3067&json=true","fetch_graph":"https://pith.science/api/pith-number/4RGIYKWLLIACC432OKW7K4EZF3/graph.json","fetch_events":"https://pith.science/api/pith-number/4RGIYKWLLIACC432OKW7K4EZF3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4RGIYKWLLIACC432OKW7K4EZF3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4RGIYKWLLIACC432OKW7K4EZF3/action/storage_attestation","attest_author":"https://pith.science/pith/4RGIYKWLLIACC432OKW7K4EZF3/action/author_attestation","sign_citation":"https://pith.science/pith/4RGIYKWLLIACC432OKW7K4EZF3/action/citation_signature","submit_replication":"https://pith.science/pith/4RGIYKWLLIACC432OKW7K4EZF3/action/replication_record"}},"created_at":"2026-05-18T01:58:28.614782+00:00","updated_at":"2026-05-18T01:58:28.614782+00:00"}