{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:ZLJDD7HJ5I242XZIMXK7RC2GRY","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":"69247155deb87526a586f3a09998c6dcf84b6c100730ac9996d1eeaa6ac4eee2","cross_cats_sorted":["physics.chem-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2025-08-11T14:14:20Z","title_canon_sha256":"ece34f6958dbc921aa2c20490a00462135d02a49fa08f09fe59a4cdbe5b7d405"},"schema_version":"1.0","source":{"id":"2508.08009","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.08009","created_at":"2026-07-05T11:52:06Z"},{"alias_kind":"arxiv_version","alias_value":"2508.08009v1","created_at":"2026-07-05T11:52:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.08009","created_at":"2026-07-05T11:52:06Z"},{"alias_kind":"pith_short_12","alias_value":"ZLJDD7HJ5I24","created_at":"2026-07-05T11:52:06Z"},{"alias_kind":"pith_short_16","alias_value":"ZLJDD7HJ5I242XZI","created_at":"2026-07-05T11:52:06Z"},{"alias_kind":"pith_short_8","alias_value":"ZLJDD7HJ","created_at":"2026-07-05T11:52:06Z"}],"graph_snapshots":[{"event_id":"sha256:96e9986fbe63d1ae59cef70ef145c0604ae267394d9eb9cffdd7e0ed57d9e0d2","target":"graph","created_at":"2026-07-05T11:52:06Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2508.08009/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Excluding the very shallow potential minimum of the electronic ground state, all bound electronic states of He$_2$ have Rydberg character. Their potential-energy functions are similar to those of the He$_2^+$ states to which the Rydberg series converge. Photoionization and electron-impact ionization of the metastable $a~^3\\Sigma_u^+$ state of He$_2$ are thus characterized by diagonal Franck-Condon factors and only provide access to low vibrational levels of the He$_2^+$ $X^+$ $^2\\Sigma_u^+$ electronic ground state. For this reason, little experimental information is available on the excited vi","authors_text":"F. Merkt, M. Beyer, M. Holdener, N. A. Shahin, V. Wirth","cross_cats":["physics.chem-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2025-08-11T14:14:20Z","title":"Characterization of the electronic ground state of He$_2^+$ by high-resolution photoelectron spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.08009","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":"sha256:0c0bacfd22044f6341ad3e536e80b6637f99faff0908dee9c88f539d8a51f7cf","target":"record","created_at":"2026-07-05T11:52:06Z","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":"69247155deb87526a586f3a09998c6dcf84b6c100730ac9996d1eeaa6ac4eee2","cross_cats_sorted":["physics.chem-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2025-08-11T14:14:20Z","title_canon_sha256":"ece34f6958dbc921aa2c20490a00462135d02a49fa08f09fe59a4cdbe5b7d405"},"schema_version":"1.0","source":{"id":"2508.08009","kind":"arxiv","version":1}},"canonical_sha256":"cad231fce9ea35cd5f2865d5f88b468e0ac8f3e24a8833862abf63b0f50dbe0c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cad231fce9ea35cd5f2865d5f88b468e0ac8f3e24a8833862abf63b0f50dbe0c","first_computed_at":"2026-07-05T11:52:06.386133Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:52:06.386133Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RGJt+/4hGKTEq4T1v57PURJQY2nUsNOl+vEWqB136CyhEOKamTpBO/xN0HJ93HlR+f2VoJvdY4lYrqKPU2dBCw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:52:06.386589Z","signed_message":"canonical_sha256_bytes"},"source_id":"2508.08009","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c0bacfd22044f6341ad3e536e80b6637f99faff0908dee9c88f539d8a51f7cf","sha256:96e9986fbe63d1ae59cef70ef145c0604ae267394d9eb9cffdd7e0ed57d9e0d2"],"state_sha256":"6415b4b2719b09b3a934ccefb6f226f4fad842a1fdb43f68841ee48815d6b1bf"}