{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:OTKPPVHRPUMG5BDFOQQMEZUT42","short_pith_number":"pith:OTKPPVHR","schema_version":"1.0","canonical_sha256":"74d4f7d4f17d186e84657420c26693e6ab0c8bc1d1b5d41a482ba4dd3ba3d693","source":{"kind":"arxiv","id":"1801.05205","version":1},"attestation_state":"computed","paper":{"title":"Lifetime measurement of the $^{229}$Th nuclear isomer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"Benedict Seiferle, Lars von der Wense, Peter G. Thirolf","submitted_at":"2018-01-16T11:03:04Z","abstract_excerpt":"The first excited isomeric state of $^{229}$Th possesses the lowest energy among all known excited nuclear states. The expected energy is accessible with today's laser technology and in principle allows for a direct optical laser excitation of the nucleus. The isomer decays via three channels to its ground-state (internal conversion, $\\gamma$ decay and bound internal conversion), whose strengths depend on the charge state of $^{229m}$Th. We report on the measurement of the internal-conversion decay half-life of neutral $^{229m}$Th. A half-life of 7 $\\pm$ 1 $\\mu$s has been measured, which is in"},"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":"1801.05205","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2018-01-16T11:03:04Z","cross_cats_sorted":[],"title_canon_sha256":"0e4f5a1e08c6614e0800b4f0decb02d837b5864e599c24d1edc4b68c9448514d","abstract_canon_sha256":"a61cbc38c94b6eafed78fbec9b697b553fe56a8462cfc2b12a8b92be6bd9ad83"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:25:47.523482Z","signature_b64":"YoeELCntb9vXEQw9sk5dXZJBtNFd7ZZ7LTqnkZDTPXYNVl3dCBzjukNNOni3voJaXc2woHMbBB/WZLRd0c1SCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"74d4f7d4f17d186e84657420c26693e6ab0c8bc1d1b5d41a482ba4dd3ba3d693","last_reissued_at":"2026-05-18T00:25:47.522836Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:25:47.522836Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Lifetime measurement of the $^{229}$Th nuclear isomer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"Benedict Seiferle, Lars von der Wense, Peter G. Thirolf","submitted_at":"2018-01-16T11:03:04Z","abstract_excerpt":"The first excited isomeric state of $^{229}$Th possesses the lowest energy among all known excited nuclear states. The expected energy is accessible with today's laser technology and in principle allows for a direct optical laser excitation of the nucleus. The isomer decays via three channels to its ground-state (internal conversion, $\\gamma$ decay and bound internal conversion), whose strengths depend on the charge state of $^{229m}$Th. We report on the measurement of the internal-conversion decay half-life of neutral $^{229m}$Th. A half-life of 7 $\\pm$ 1 $\\mu$s has been measured, which is in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.05205","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":"1801.05205","created_at":"2026-05-18T00:25:47.522954+00:00"},{"alias_kind":"arxiv_version","alias_value":"1801.05205v1","created_at":"2026-05-18T00:25:47.522954+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.05205","created_at":"2026-05-18T00:25:47.522954+00:00"},{"alias_kind":"pith_short_12","alias_value":"OTKPPVHRPUMG","created_at":"2026-05-18T12:32:43.782077+00:00"},{"alias_kind":"pith_short_16","alias_value":"OTKPPVHRPUMG5BDF","created_at":"2026-05-18T12:32:43.782077+00:00"},{"alias_kind":"pith_short_8","alias_value":"OTKPPVHR","created_at":"2026-05-18T12:32:43.782077+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/OTKPPVHRPUMG5BDFOQQMEZUT42","json":"https://pith.science/pith/OTKPPVHRPUMG5BDFOQQMEZUT42.json","graph_json":"https://pith.science/api/pith-number/OTKPPVHRPUMG5BDFOQQMEZUT42/graph.json","events_json":"https://pith.science/api/pith-number/OTKPPVHRPUMG5BDFOQQMEZUT42/events.json","paper":"https://pith.science/paper/OTKPPVHR"},"agent_actions":{"view_html":"https://pith.science/pith/OTKPPVHRPUMG5BDFOQQMEZUT42","download_json":"https://pith.science/pith/OTKPPVHRPUMG5BDFOQQMEZUT42.json","view_paper":"https://pith.science/paper/OTKPPVHR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1801.05205&json=true","fetch_graph":"https://pith.science/api/pith-number/OTKPPVHRPUMG5BDFOQQMEZUT42/graph.json","fetch_events":"https://pith.science/api/pith-number/OTKPPVHRPUMG5BDFOQQMEZUT42/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OTKPPVHRPUMG5BDFOQQMEZUT42/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OTKPPVHRPUMG5BDFOQQMEZUT42/action/storage_attestation","attest_author":"https://pith.science/pith/OTKPPVHRPUMG5BDFOQQMEZUT42/action/author_attestation","sign_citation":"https://pith.science/pith/OTKPPVHRPUMG5BDFOQQMEZUT42/action/citation_signature","submit_replication":"https://pith.science/pith/OTKPPVHRPUMG5BDFOQQMEZUT42/action/replication_record"}},"created_at":"2026-05-18T00:25:47.522954+00:00","updated_at":"2026-05-18T00:25:47.522954+00:00"}