{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:ZZSTOXTGCZOOQSXTZS7ZLNJHCM","short_pith_number":"pith:ZZSTOXTG","schema_version":"1.0","canonical_sha256":"ce65375e66165ce84af3ccbf95b527133b2da79e2ff9b1324a00cc53a8106fea","source":{"kind":"arxiv","id":"1801.02823","version":4},"attestation_state":"computed","paper":{"title":"New mass anchor points for neutron-deficient heavy nuclei from direct mass measurements of radium and actinium isotopes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Ozawa, A. Takamine, D. Kaji, H. Haba, H. Koura, H. Miyatake, H. Wollnik, I. Murray, J. Y. Moon, K. Morimoto, K. Morita, M. MacCormick, M. Reponen, M. Rosenbusch, M. Wada, P. Schury, S. Kimura, T. Niwase, T. Tanaka, Y. Ito","submitted_at":"2018-01-09T07:10:00Z","abstract_excerpt":"The masses of the exotic isotopes $^{210-214}$Ac and $^{210-214}$Ra have been measured with a multi-reflection time-of-flight mass spectrograph. These isotopes were obtained in flight as fusion-evaporation products behind the gas-filled recoil ion separator GARIS-II at RIKEN. The new direct mass measurements serve as an independent and direct benchmark for existing $\\alpha$-$\\gamma$ spectroscopy data in this mass region. Further, new mass anchor points are set for U and Np nuclei close to the $N=126$ shell closure for a future benchmark of the $Z=92$ sub-shell for neutron-deficient heavy isoto"},"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":"1801.02823","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2018-01-09T07:10:00Z","cross_cats_sorted":[],"title_canon_sha256":"72fda8860c997d52d33f3740b5de43288823ab8f33bfb047ccbdef6f58d9200f","abstract_canon_sha256":"52145f1170dca15cfd9e5f407d6a66f91d8146689fe41b731615c3a5be30ba8a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:13:30.534971Z","signature_b64":"sdvYtAZJdgtJ8z7TI1U1qxkO40WSuHjtHE27Nt132DQ1zGYJ/6Dj9wD5t8CLo2UU2eUVEE1wTphx1OtUdfmYBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce65375e66165ce84af3ccbf95b527133b2da79e2ff9b1324a00cc53a8106fea","last_reissued_at":"2026-05-18T00:13:30.534328Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:13:30.534328Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"New mass anchor points for neutron-deficient heavy nuclei from direct mass measurements of radium and actinium isotopes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Ozawa, A. Takamine, D. Kaji, H. Haba, H. Koura, H. Miyatake, H. Wollnik, I. Murray, J. Y. Moon, K. Morimoto, K. Morita, M. MacCormick, M. Reponen, M. Rosenbusch, M. Wada, P. Schury, S. Kimura, T. Niwase, T. Tanaka, Y. Ito","submitted_at":"2018-01-09T07:10:00Z","abstract_excerpt":"The masses of the exotic isotopes $^{210-214}$Ac and $^{210-214}$Ra have been measured with a multi-reflection time-of-flight mass spectrograph. These isotopes were obtained in flight as fusion-evaporation products behind the gas-filled recoil ion separator GARIS-II at RIKEN. The new direct mass measurements serve as an independent and direct benchmark for existing $\\alpha$-$\\gamma$ spectroscopy data in this mass region. Further, new mass anchor points are set for U and Np nuclei close to the $N=126$ shell closure for a future benchmark of the $Z=92$ sub-shell for neutron-deficient heavy isoto"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.02823","kind":"arxiv","version":4},"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":"1801.02823","created_at":"2026-05-18T00:13:30.534426+00:00"},{"alias_kind":"arxiv_version","alias_value":"1801.02823v4","created_at":"2026-05-18T00:13:30.534426+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.02823","created_at":"2026-05-18T00:13:30.534426+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZZSTOXTGCZOO","created_at":"2026-05-18T12:33:07.085635+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZZSTOXTGCZOOQSXT","created_at":"2026-05-18T12:33:07.085635+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZZSTOXTG","created_at":"2026-05-18T12:33:07.085635+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/ZZSTOXTGCZOOQSXTZS7ZLNJHCM","json":"https://pith.science/pith/ZZSTOXTGCZOOQSXTZS7ZLNJHCM.json","graph_json":"https://pith.science/api/pith-number/ZZSTOXTGCZOOQSXTZS7ZLNJHCM/graph.json","events_json":"https://pith.science/api/pith-number/ZZSTOXTGCZOOQSXTZS7ZLNJHCM/events.json","paper":"https://pith.science/paper/ZZSTOXTG"},"agent_actions":{"view_html":"https://pith.science/pith/ZZSTOXTGCZOOQSXTZS7ZLNJHCM","download_json":"https://pith.science/pith/ZZSTOXTGCZOOQSXTZS7ZLNJHCM.json","view_paper":"https://pith.science/paper/ZZSTOXTG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1801.02823&json=true","fetch_graph":"https://pith.science/api/pith-number/ZZSTOXTGCZOOQSXTZS7ZLNJHCM/graph.json","fetch_events":"https://pith.science/api/pith-number/ZZSTOXTGCZOOQSXTZS7ZLNJHCM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZZSTOXTGCZOOQSXTZS7ZLNJHCM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZZSTOXTGCZOOQSXTZS7ZLNJHCM/action/storage_attestation","attest_author":"https://pith.science/pith/ZZSTOXTGCZOOQSXTZS7ZLNJHCM/action/author_attestation","sign_citation":"https://pith.science/pith/ZZSTOXTGCZOOQSXTZS7ZLNJHCM/action/citation_signature","submit_replication":"https://pith.science/pith/ZZSTOXTGCZOOQSXTZS7ZLNJHCM/action/replication_record"}},"created_at":"2026-05-18T00:13:30.534426+00:00","updated_at":"2026-05-18T00:13:30.534426+00:00"}