{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:VHGEOXELR2QAX6X4CUFBZIZCDO","short_pith_number":"pith:VHGEOXEL","schema_version":"1.0","canonical_sha256":"a9cc475c8b8ea00bfafc150a1ca3221b8a9c24cef7a6775e24b970cfc922918d","source":{"kind":"arxiv","id":"1810.13114","version":1},"attestation_state":"computed","paper":{"title":"Isotopic trends of quasifission and fusion-fission in the reactions $^{48}$Ca+$^{239,244}$Pu","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"nucl-th","authors_text":"Caiwan Shen, Chong Yu, Lu Guo, Zhenji Wu","submitted_at":"2018-10-31T05:36:11Z","abstract_excerpt":"Background: Quasifission and fusion-fission are primary mechanisms to prevent the production of superheavy elements. The recent experimental measurements reveal that the fusion-evaporation cross section in the $3n$ reaction channel of $^{48}$Ca+$^{239}$Pu is 50 times lower than using $^{244}$Pu as target nucleus. However, the precise mechanisms of this remarkable isotopic dependence are not well understood.\n  Purpose: To understand the experimental observation of the rapid decrease of stability of superheavy nuclei as the neutron number decreases, the theoretical studies of quasifission and fu"},"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":"1810.13114","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2018-10-31T05:36:11Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"8b5be1401ab3a31118deee84ad862baf3f8c6a92d67ee5635e293a0ba8887186","abstract_canon_sha256":"33b19e1f1ddf5d59b9defc61be55c99ac4bf35a94de3dd93c59f1e47fb64f066"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:45.170249Z","signature_b64":"sWfPbFVHvyidESYlTaEChuI/iBJbYVII+bk+mmyXgD5N34EZxKdS83rzJ7L28ZJs3oOc6MP3Rm0OCkQkGlO3Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a9cc475c8b8ea00bfafc150a1ca3221b8a9c24cef7a6775e24b970cfc922918d","last_reissued_at":"2026-05-17T23:56:45.169869Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:45.169869Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Isotopic trends of quasifission and fusion-fission in the reactions $^{48}$Ca+$^{239,244}$Pu","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"nucl-th","authors_text":"Caiwan Shen, Chong Yu, Lu Guo, Zhenji Wu","submitted_at":"2018-10-31T05:36:11Z","abstract_excerpt":"Background: Quasifission and fusion-fission are primary mechanisms to prevent the production of superheavy elements. The recent experimental measurements reveal that the fusion-evaporation cross section in the $3n$ reaction channel of $^{48}$Ca+$^{239}$Pu is 50 times lower than using $^{244}$Pu as target nucleus. However, the precise mechanisms of this remarkable isotopic dependence are not well understood.\n  Purpose: To understand the experimental observation of the rapid decrease of stability of superheavy nuclei as the neutron number decreases, the theoretical studies of quasifission and fu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.13114","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":"1810.13114","created_at":"2026-05-17T23:56:45.169932+00:00"},{"alias_kind":"arxiv_version","alias_value":"1810.13114v1","created_at":"2026-05-17T23:56:45.169932+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.13114","created_at":"2026-05-17T23:56:45.169932+00:00"},{"alias_kind":"pith_short_12","alias_value":"VHGEOXELR2QA","created_at":"2026-05-18T12:32:59.047623+00:00"},{"alias_kind":"pith_short_16","alias_value":"VHGEOXELR2QAX6X4","created_at":"2026-05-18T12:32:59.047623+00:00"},{"alias_kind":"pith_short_8","alias_value":"VHGEOXEL","created_at":"2026-05-18T12:32:59.047623+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/VHGEOXELR2QAX6X4CUFBZIZCDO","json":"https://pith.science/pith/VHGEOXELR2QAX6X4CUFBZIZCDO.json","graph_json":"https://pith.science/api/pith-number/VHGEOXELR2QAX6X4CUFBZIZCDO/graph.json","events_json":"https://pith.science/api/pith-number/VHGEOXELR2QAX6X4CUFBZIZCDO/events.json","paper":"https://pith.science/paper/VHGEOXEL"},"agent_actions":{"view_html":"https://pith.science/pith/VHGEOXELR2QAX6X4CUFBZIZCDO","download_json":"https://pith.science/pith/VHGEOXELR2QAX6X4CUFBZIZCDO.json","view_paper":"https://pith.science/paper/VHGEOXEL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1810.13114&json=true","fetch_graph":"https://pith.science/api/pith-number/VHGEOXELR2QAX6X4CUFBZIZCDO/graph.json","fetch_events":"https://pith.science/api/pith-number/VHGEOXELR2QAX6X4CUFBZIZCDO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VHGEOXELR2QAX6X4CUFBZIZCDO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VHGEOXELR2QAX6X4CUFBZIZCDO/action/storage_attestation","attest_author":"https://pith.science/pith/VHGEOXELR2QAX6X4CUFBZIZCDO/action/author_attestation","sign_citation":"https://pith.science/pith/VHGEOXELR2QAX6X4CUFBZIZCDO/action/citation_signature","submit_replication":"https://pith.science/pith/VHGEOXELR2QAX6X4CUFBZIZCDO/action/replication_record"}},"created_at":"2026-05-17T23:56:45.169932+00:00","updated_at":"2026-05-17T23:56:45.169932+00:00"}