{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:RCN73JH5JSK5RMPWSIDN7FEDMQ","short_pith_number":"pith:RCN73JH5","schema_version":"1.0","canonical_sha256":"889bfda4fd4c95d8b1f69206df94836413a23b3a1800b27e6630e6b05fa26add","source":{"kind":"arxiv","id":"1709.05325","version":2},"attestation_state":"computed","paper":{"title":"Laser spectroscopic characterization of the nuclear clock isomer $^{229m}$Th","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"Benedict Seiferle, Christoph E. D\\\"ullmann, David M. Meier, Ekkehard Peik, Johannes Thielking, Lars von der Wense, Maxim V. Okhapkin, Peter G. Thirolf, Przemyslaw Glowacki","submitted_at":"2017-09-15T17:35:37Z","abstract_excerpt":"The isotope $^{229}$Th is the only nucleus known to possess an excited state $^{229m}$Th in the energy range of a few electron volts, a transition energy typical for electrons in the valence shell of atoms, but about four orders of magnitude lower than common nuclear excitation energies. A number of applications of this unique nuclear system, which is accessible by optical methods, have been proposed. Most promising among them appears a highly precise nuclear clock that outperforms existing atomic timekeepers. Here we present the laser spectroscopic investigation of the hyperfine structure of "},"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":"1709.05325","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2017-09-15T17:35:37Z","cross_cats_sorted":[],"title_canon_sha256":"0064fd13414fc7e61360f7431fa74f434f162ab1b30a763dbb23896da80295c7","abstract_canon_sha256":"2a1226e64f8f2c87b3a7e4c1738d64876f7249aaba0c7ad33bbb52f974f3ef15"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:04.032174Z","signature_b64":"6Doku7AlbvkmoKnNYcBfwkRxwGav8HrPdpedi94DWg0WMpUikHElYEY/GPVxw+Wal5i6JtxKWas7Ybk509HTAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"889bfda4fd4c95d8b1f69206df94836413a23b3a1800b27e6630e6b05fa26add","last_reissued_at":"2026-05-18T00:18:04.031648Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:04.031648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Laser spectroscopic characterization of the nuclear clock isomer $^{229m}$Th","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"Benedict Seiferle, Christoph E. D\\\"ullmann, David M. Meier, Ekkehard Peik, Johannes Thielking, Lars von der Wense, Maxim V. Okhapkin, Peter G. Thirolf, Przemyslaw Glowacki","submitted_at":"2017-09-15T17:35:37Z","abstract_excerpt":"The isotope $^{229}$Th is the only nucleus known to possess an excited state $^{229m}$Th in the energy range of a few electron volts, a transition energy typical for electrons in the valence shell of atoms, but about four orders of magnitude lower than common nuclear excitation energies. A number of applications of this unique nuclear system, which is accessible by optical methods, have been proposed. Most promising among them appears a highly precise nuclear clock that outperforms existing atomic timekeepers. Here we present the laser spectroscopic investigation of the hyperfine structure of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.05325","kind":"arxiv","version":2},"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":"1709.05325","created_at":"2026-05-18T00:18:04.031745+00:00"},{"alias_kind":"arxiv_version","alias_value":"1709.05325v2","created_at":"2026-05-18T00:18:04.031745+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.05325","created_at":"2026-05-18T00:18:04.031745+00:00"},{"alias_kind":"pith_short_12","alias_value":"RCN73JH5JSK5","created_at":"2026-05-18T12:31:39.905425+00:00"},{"alias_kind":"pith_short_16","alias_value":"RCN73JH5JSK5RMPW","created_at":"2026-05-18T12:31:39.905425+00:00"},{"alias_kind":"pith_short_8","alias_value":"RCN73JH5","created_at":"2026-05-18T12:31:39.905425+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/RCN73JH5JSK5RMPWSIDN7FEDMQ","json":"https://pith.science/pith/RCN73JH5JSK5RMPWSIDN7FEDMQ.json","graph_json":"https://pith.science/api/pith-number/RCN73JH5JSK5RMPWSIDN7FEDMQ/graph.json","events_json":"https://pith.science/api/pith-number/RCN73JH5JSK5RMPWSIDN7FEDMQ/events.json","paper":"https://pith.science/paper/RCN73JH5"},"agent_actions":{"view_html":"https://pith.science/pith/RCN73JH5JSK5RMPWSIDN7FEDMQ","download_json":"https://pith.science/pith/RCN73JH5JSK5RMPWSIDN7FEDMQ.json","view_paper":"https://pith.science/paper/RCN73JH5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1709.05325&json=true","fetch_graph":"https://pith.science/api/pith-number/RCN73JH5JSK5RMPWSIDN7FEDMQ/graph.json","fetch_events":"https://pith.science/api/pith-number/RCN73JH5JSK5RMPWSIDN7FEDMQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/RCN73JH5JSK5RMPWSIDN7FEDMQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/RCN73JH5JSK5RMPWSIDN7FEDMQ/action/storage_attestation","attest_author":"https://pith.science/pith/RCN73JH5JSK5RMPWSIDN7FEDMQ/action/author_attestation","sign_citation":"https://pith.science/pith/RCN73JH5JSK5RMPWSIDN7FEDMQ/action/citation_signature","submit_replication":"https://pith.science/pith/RCN73JH5JSK5RMPWSIDN7FEDMQ/action/replication_record"}},"created_at":"2026-05-18T00:18:04.031745+00:00","updated_at":"2026-05-18T00:18:04.031745+00:00"}