{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2007:CRHR6ZGS2XNVLFDYKM4D7NFN5N","short_pith_number":"pith:CRHR6ZGS","schema_version":"1.0","canonical_sha256":"144f1f64d2d5db55947853383fb4adeb6a0a1abd93fe963901ee44ec9e8a05e0","source":{"kind":"arxiv","id":"0704.1693","version":2},"attestation_state":"computed","paper":{"title":"N_p N_n Scheme Based on New Empirical Formula for Excitation Energy","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Dongwoo Cha, Eunja Ha, Jin-Hee Yoon","submitted_at":"2007-04-13T03:26:41Z","abstract_excerpt":"We examine the $N_p N_n$ scheme based on a recently proposed simple empirical formula which is highly valid for the excitation energy of the first excited natural parity even multipole states in even-even nuclei. We demonstrate explicitly that the $N_p N_n$ scheme for the excitation energy emerges from the separate exponential dependence of the excitation energy on the valence nucleon numbers $N_p$ and $N_n$ together with the fact that only a limited set of numbers is allowed for the $N_p$ and $N_n$ of the existing nuclei."},"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":"0704.1693","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"2007-04-13T03:26:41Z","cross_cats_sorted":[],"title_canon_sha256":"bd0571bbf821b79c546489e8b6d7da916c5132e04168de4346b88a4fbc22e140","abstract_canon_sha256":"af518b8bdbeff1984bd0c6bfd1ddba38c19beb1a1ae9aaa8a40dd9328ef89ace"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:24:54.134005Z","signature_b64":"QQ4Kl6on4sExmAVElqVREq5ZhOeC7ldoLufDEoqjlWJEwSooHvmbnFwv3mFY353kvtwU1vj0GgNBe3uQejI6DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"144f1f64d2d5db55947853383fb4adeb6a0a1abd93fe963901ee44ec9e8a05e0","last_reissued_at":"2026-07-04T15:24:54.133603Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:24:54.133603Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"N_p N_n Scheme Based on New Empirical Formula for Excitation Energy","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Dongwoo Cha, Eunja Ha, Jin-Hee Yoon","submitted_at":"2007-04-13T03:26:41Z","abstract_excerpt":"We examine the $N_p N_n$ scheme based on a recently proposed simple empirical formula which is highly valid for the excitation energy of the first excited natural parity even multipole states in even-even nuclei. We demonstrate explicitly that the $N_p N_n$ scheme for the excitation energy emerges from the separate exponential dependence of the excitation energy on the valence nucleon numbers $N_p$ and $N_n$ together with the fact that only a limited set of numbers is allowed for the $N_p$ and $N_n$ of the existing nuclei."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0704.1693","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0704.1693/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"0704.1693","created_at":"2026-07-04T15:24:54.133676+00:00"},{"alias_kind":"arxiv_version","alias_value":"0704.1693v2","created_at":"2026-07-04T15:24:54.133676+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0704.1693","created_at":"2026-07-04T15:24:54.133676+00:00"},{"alias_kind":"pith_short_12","alias_value":"CRHR6ZGS2XNV","created_at":"2026-07-04T15:24:54.133676+00:00"},{"alias_kind":"pith_short_16","alias_value":"CRHR6ZGS2XNVLFDY","created_at":"2026-07-04T15:24:54.133676+00:00"},{"alias_kind":"pith_short_8","alias_value":"CRHR6ZGS","created_at":"2026-07-04T15:24:54.133676+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/CRHR6ZGS2XNVLFDYKM4D7NFN5N","json":"https://pith.science/pith/CRHR6ZGS2XNVLFDYKM4D7NFN5N.json","graph_json":"https://pith.science/api/pith-number/CRHR6ZGS2XNVLFDYKM4D7NFN5N/graph.json","events_json":"https://pith.science/api/pith-number/CRHR6ZGS2XNVLFDYKM4D7NFN5N/events.json","paper":"https://pith.science/paper/CRHR6ZGS"},"agent_actions":{"view_html":"https://pith.science/pith/CRHR6ZGS2XNVLFDYKM4D7NFN5N","download_json":"https://pith.science/pith/CRHR6ZGS2XNVLFDYKM4D7NFN5N.json","view_paper":"https://pith.science/paper/CRHR6ZGS","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0704.1693&json=true","fetch_graph":"https://pith.science/api/pith-number/CRHR6ZGS2XNVLFDYKM4D7NFN5N/graph.json","fetch_events":"https://pith.science/api/pith-number/CRHR6ZGS2XNVLFDYKM4D7NFN5N/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CRHR6ZGS2XNVLFDYKM4D7NFN5N/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CRHR6ZGS2XNVLFDYKM4D7NFN5N/action/storage_attestation","attest_author":"https://pith.science/pith/CRHR6ZGS2XNVLFDYKM4D7NFN5N/action/author_attestation","sign_citation":"https://pith.science/pith/CRHR6ZGS2XNVLFDYKM4D7NFN5N/action/citation_signature","submit_replication":"https://pith.science/pith/CRHR6ZGS2XNVLFDYKM4D7NFN5N/action/replication_record"}},"created_at":"2026-07-04T15:24:54.133676+00:00","updated_at":"2026-07-04T15:24:54.133676+00:00"}