{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:FSQBCF4BS2S3HFYE6AZYZRL7UD","short_pith_number":"pith:FSQBCF4B","schema_version":"1.0","canonical_sha256":"2ca011178196a5b39704f0338cc57fa0ca3cfcb9d0ed4e6a699f184cfcc22125","source":{"kind":"arxiv","id":"1902.09256","version":2},"attestation_state":"computed","paper":{"title":"Electronic level structure of $\\mathrm{Th}^+$ in the range of the $^{229m}\\mathrm{Th}$ isomer energy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Andrey Surzhykov, David-Marcel Meier, Ekkehard Peik, Johannes Thielking, Maksim V. Okhapkin, Przemys{\\l}aw G{\\l}owacki, Robert A. M\\\"uller","submitted_at":"2019-02-25T13:29:07Z","abstract_excerpt":"Using resonant two-step laser excitation of trapped $^{232}\\mathrm{Th}^+$ ions, we observe 166 previously unknown energy levels of even parity within the energy range from 7.8 to 9.8 eV and angular momenta from $J=1/2$ to $7/2$. We also classify the high-lying levels observed in our earlier experiments by the total angular momentum and perform ab-initio calculations to compare their results with the observed level density. The observed levels can be relevant for the excitation or decay of the $^{229m}\\mathrm{Th}$ isomeric nuclear state which lies in this energy range. The high density of elect"},"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":"1902.09256","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-02-25T13:29:07Z","cross_cats_sorted":[],"title_canon_sha256":"d647e85fe81ad0d0e57a045255f9c36ad2f78aa81887063840ef59706d86b257","abstract_canon_sha256":"997bed604b568b7c8874e31e121a77c15638bd3646c073b7fb04badce2bc9add"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:44:11.970225Z","signature_b64":"m612D18S0xvoh9gfd0YcCEaJSWIE1EeJD7Or9Lv8Wl7jsDifwc++Mj8wSuWy7T3SIq79fV1o9E5vDKsF7SLiBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2ca011178196a5b39704f0338cc57fa0ca3cfcb9d0ed4e6a699f184cfcc22125","last_reissued_at":"2026-05-17T23:44:11.969704Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:44:11.969704Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Electronic level structure of $\\mathrm{Th}^+$ in the range of the $^{229m}\\mathrm{Th}$ isomer energy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Andrey Surzhykov, David-Marcel Meier, Ekkehard Peik, Johannes Thielking, Maksim V. Okhapkin, Przemys{\\l}aw G{\\l}owacki, Robert A. M\\\"uller","submitted_at":"2019-02-25T13:29:07Z","abstract_excerpt":"Using resonant two-step laser excitation of trapped $^{232}\\mathrm{Th}^+$ ions, we observe 166 previously unknown energy levels of even parity within the energy range from 7.8 to 9.8 eV and angular momenta from $J=1/2$ to $7/2$. We also classify the high-lying levels observed in our earlier experiments by the total angular momentum and perform ab-initio calculations to compare their results with the observed level density. The observed levels can be relevant for the excitation or decay of the $^{229m}\\mathrm{Th}$ isomeric nuclear state which lies in this energy range. The high density of elect"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.09256","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":"1902.09256","created_at":"2026-05-17T23:44:11.969793+00:00"},{"alias_kind":"arxiv_version","alias_value":"1902.09256v2","created_at":"2026-05-17T23:44:11.969793+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.09256","created_at":"2026-05-17T23:44:11.969793+00:00"},{"alias_kind":"pith_short_12","alias_value":"FSQBCF4BS2S3","created_at":"2026-05-18T12:33:15.570797+00:00"},{"alias_kind":"pith_short_16","alias_value":"FSQBCF4BS2S3HFYE","created_at":"2026-05-18T12:33:15.570797+00:00"},{"alias_kind":"pith_short_8","alias_value":"FSQBCF4B","created_at":"2026-05-18T12:33:15.570797+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/FSQBCF4BS2S3HFYE6AZYZRL7UD","json":"https://pith.science/pith/FSQBCF4BS2S3HFYE6AZYZRL7UD.json","graph_json":"https://pith.science/api/pith-number/FSQBCF4BS2S3HFYE6AZYZRL7UD/graph.json","events_json":"https://pith.science/api/pith-number/FSQBCF4BS2S3HFYE6AZYZRL7UD/events.json","paper":"https://pith.science/paper/FSQBCF4B"},"agent_actions":{"view_html":"https://pith.science/pith/FSQBCF4BS2S3HFYE6AZYZRL7UD","download_json":"https://pith.science/pith/FSQBCF4BS2S3HFYE6AZYZRL7UD.json","view_paper":"https://pith.science/paper/FSQBCF4B","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1902.09256&json=true","fetch_graph":"https://pith.science/api/pith-number/FSQBCF4BS2S3HFYE6AZYZRL7UD/graph.json","fetch_events":"https://pith.science/api/pith-number/FSQBCF4BS2S3HFYE6AZYZRL7UD/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FSQBCF4BS2S3HFYE6AZYZRL7UD/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FSQBCF4BS2S3HFYE6AZYZRL7UD/action/storage_attestation","attest_author":"https://pith.science/pith/FSQBCF4BS2S3HFYE6AZYZRL7UD/action/author_attestation","sign_citation":"https://pith.science/pith/FSQBCF4BS2S3HFYE6AZYZRL7UD/action/citation_signature","submit_replication":"https://pith.science/pith/FSQBCF4BS2S3HFYE6AZYZRL7UD/action/replication_record"}},"created_at":"2026-05-17T23:44:11.969793+00:00","updated_at":"2026-05-17T23:44:11.969793+00:00"}