{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:KA4TQ4RQMGVNWZJF5KPKOO4ZMW","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"faef1b51743b27f4a19452da74d333904ea6d5514d879274becdef5e1f747592","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2018-04-12T08:35:18Z","title_canon_sha256":"15c2586f08831f1818f807847868604e616c73e5526510eeadd1bb2a9a211e93"},"schema_version":"1.0","source":{"id":"1804.04374","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.04374","created_at":"2026-05-18T00:08:35Z"},{"alias_kind":"arxiv_version","alias_value":"1804.04374v2","created_at":"2026-05-18T00:08:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.04374","created_at":"2026-05-18T00:08:35Z"},{"alias_kind":"pith_short_12","alias_value":"KA4TQ4RQMGVN","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_16","alias_value":"KA4TQ4RQMGVNWZJF","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_8","alias_value":"KA4TQ4RQ","created_at":"2026-05-18T12:32:33Z"}],"graph_snapshots":[{"event_id":"sha256:d80a503fafceafa76b54a681595911dec4f618c24221884bcb820231a4165cea","target":"graph","created_at":"2026-05-18T00:08:35Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We have measured the threshold center-of-mass kinetic energy for knocking out a single carbon atom from C$_{60}^-$ in collisions with He. Combining this experimental result with classical molecular dynamics simulations, we determine a semi-empirical value of 24.1$\\pm$0.5~eV for the threshold displacement energy, the energy needed to remove a single carbon atom from the C$_{60}$ cage. We report the first observation of an endohedral complex with an odd number of carbon atoms, He@C$_{59}^-$, and discuss its formation and decay mechanisms.","authors_text":"H. Cederquist, H. T. Schmidt, H. Zettergren, M. Gatchell, M. H. Stockett, M. Wolf","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2018-04-12T08:35:18Z","title":"The threshold displacement energy of buckminsterfullerene C$_{60}$ and formation of the endohedral defect fullerene He@C$_{59}$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.04374","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:994400a30afa692a86869ddc805f443b2cdc3b5e0be42c13076f2660603a09d6","target":"record","created_at":"2026-05-18T00:08:35Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"faef1b51743b27f4a19452da74d333904ea6d5514d879274becdef5e1f747592","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2018-04-12T08:35:18Z","title_canon_sha256":"15c2586f08831f1818f807847868604e616c73e5526510eeadd1bb2a9a211e93"},"schema_version":"1.0","source":{"id":"1804.04374","kind":"arxiv","version":2}},"canonical_sha256":"503938723061aadb6525ea9ea73b99659965bc06d8f7f19e306c758cd84590ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"503938723061aadb6525ea9ea73b99659965bc06d8f7f19e306c758cd84590ca","first_computed_at":"2026-05-18T00:08:35.835659Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:08:35.835659Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"meZznqTZoeUjib9VKjKCpB7Rf9+CXbstl4ssJ/gi8GudeJdMtFZohnzoDkw9SLJGD4hOXSKoq0110stboI6KBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:08:35.836207Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.04374","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:994400a30afa692a86869ddc805f443b2cdc3b5e0be42c13076f2660603a09d6","sha256:d80a503fafceafa76b54a681595911dec4f618c24221884bcb820231a4165cea"],"state_sha256":"7a3c8893d2b3306abb95bbd8c0adfd9e914d736958bf975f18abe4d8d8a684de"}