{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:6OQ2DCXAIWHRUXAXBOG2VAIU7R","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":"b5d2054877d99b665cef72f8ad185fa05c6aac876b784d37fe0dfb6464110220","cross_cats_sorted":["physics.atom-ph","physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-07-21T20:11:13Z","title_canon_sha256":"eb8a3fade76a93a97c3a5a058b90b60662bcae672c14f3e4bba9b9ca37fe4e4e"},"schema_version":"1.0","source":{"id":"1707.07036","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.07036","created_at":"2026-05-17T23:56:30Z"},{"alias_kind":"arxiv_version","alias_value":"1707.07036v1","created_at":"2026-05-17T23:56:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.07036","created_at":"2026-05-17T23:56:30Z"},{"alias_kind":"pith_short_12","alias_value":"6OQ2DCXAIWHR","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6OQ2DCXAIWHRUXAX","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6OQ2DCXA","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:22e030c1bedce4b54f9226ab2f6b835adedeb1227c8f3d32035090ebe90b78a7","target":"graph","created_at":"2026-05-17T23:56:30Z","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":"Trapping molecular ions that have been sympathetically cooled with laser-cooled atomic ions is a useful platform for exploring cold ion chemistry. We designed and characterized a new experimental apparatus for probing chemical reaction dynamics between molecular cations and neutral radicals at temperatures below 1 K. The ions are trapped in a linear quadrupole radio-frequency trap and sympathetically cooled by co-trapped, laser-cooled, atomic ions. The ion trap is coupled to a time-of-flight mass spectrometer to readily identify product ion species, as well as to accurately determine trapped i","authors_text":"Heather J. Lewandowski, James Greenberg, Kevin Loeffler, Mikhail I. Miller, Philipp C. Schmid","cross_cats":["physics.atom-ph","physics.chem-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-07-21T20:11:13Z","title":"High resolution ion trap time-of-flight mass spectrometer for cold trapped ion experiments"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.07036","kind":"arxiv","version":1},"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":"sha256:1e9b12ccd7f35ec37e1386c9459c1e432b040b293a7ccfbfc602d0276a536185","target":"record","created_at":"2026-05-17T23:56:30Z","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":"b5d2054877d99b665cef72f8ad185fa05c6aac876b784d37fe0dfb6464110220","cross_cats_sorted":["physics.atom-ph","physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-07-21T20:11:13Z","title_canon_sha256":"eb8a3fade76a93a97c3a5a058b90b60662bcae672c14f3e4bba9b9ca37fe4e4e"},"schema_version":"1.0","source":{"id":"1707.07036","kind":"arxiv","version":1}},"canonical_sha256":"f3a1a18ae0458f1a5c170b8daa8114fc7819692e8b2c469b0fe9b92b334d8d81","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f3a1a18ae0458f1a5c170b8daa8114fc7819692e8b2c469b0fe9b92b334d8d81","first_computed_at":"2026-05-17T23:56:30.265803Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:56:30.265803Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gP2C1A5oCT8eAOz5IPgwWN6E5DrgOHFCAco0NdQTzc2l67Ji8RkUodWwiLjbDMVKMdXcjn+dawsqurtcKdcCCg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:56:30.266204Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.07036","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1e9b12ccd7f35ec37e1386c9459c1e432b040b293a7ccfbfc602d0276a536185","sha256:22e030c1bedce4b54f9226ab2f6b835adedeb1227c8f3d32035090ebe90b78a7"],"state_sha256":"847871bd51548a855d8e99f1a435973a7ba1eab3843686f5033c41ed9058b971"}