{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:66N2C3TF3UV3JENJYSBQQOITU7","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":"54cc9dc5313b102dc47956d37dead22c253f53231af22b69466723e00c243f28","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-06-14T11:48:13Z","title_canon_sha256":"5e1d8b4ac3b8b3bd53a3d3da796e34fdd2b588489fff192aa506815658164ee1"},"schema_version":"1.0","source":{"id":"1806.05485","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.05485","created_at":"2026-05-18T00:06:01Z"},{"alias_kind":"arxiv_version","alias_value":"1806.05485v1","created_at":"2026-05-18T00:06:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.05485","created_at":"2026-05-18T00:06:01Z"},{"alias_kind":"pith_short_12","alias_value":"66N2C3TF3UV3","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"66N2C3TF3UV3JENJ","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"66N2C3TF","created_at":"2026-05-18T12:32:08Z"}],"graph_snapshots":[{"event_id":"sha256:d55acdac3bc87c53437129a120aac9d739b196a47ff84439eae16832e81cd8ea","target":"graph","created_at":"2026-05-18T00:06:01Z","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 report the observation of multiple ionization of Argon through multi-XUV-photon absorption induced by an unprecedentedly powerful laser driven high-harmonic-generation source. Comparing the measured intensity dependence of the yield of the different Argon charge states with numerical calculations we can infer the different channels -direct and sequential- underlying the interaction. While such studies were feasible so far only with FEL sources, this work connects highly-non-linear-XUV-processes with the ultra-short time scales, inherent to the harmonic pulses, and highlights the advanced pe","authors_text":"A. Emmanouilidou, A. Nayak, B. Bodi, C. Kalpouzos, D. Charalambidis, E. Skantzakis, H. I. B. Banks, I. Makos, I. Orfanos, K. Varju, M. Dumergue, P. Tzallas, S. Kuhn","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-06-14T11:48:13Z","title":"Multiple ionization of argon via xuv-photon absorption induced by 20-gigawatt high-harmonic pulses"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.05485","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":"sha256:62c114a8e6fe34bde7ab933c495b066e8f70595a6047e4c74c11b8a434ed6f82","target":"record","created_at":"2026-05-18T00:06:01Z","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":"54cc9dc5313b102dc47956d37dead22c253f53231af22b69466723e00c243f28","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-06-14T11:48:13Z","title_canon_sha256":"5e1d8b4ac3b8b3bd53a3d3da796e34fdd2b588489fff192aa506815658164ee1"},"schema_version":"1.0","source":{"id":"1806.05485","kind":"arxiv","version":1}},"canonical_sha256":"f79ba16e65dd2bb491a9c483083913a7e6f6055459d14303f609a942cbc9f58a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f79ba16e65dd2bb491a9c483083913a7e6f6055459d14303f609a942cbc9f58a","first_computed_at":"2026-05-18T00:06:01.608648Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:06:01.608648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WJAanWgN5WirWxD1Oe6tG6GInqY9Id4cose58ss/dvyI+LT+15u806Da0jn9LOTz0701NhYDiA1VC0A4AbRlBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:06:01.609128Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.05485","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:62c114a8e6fe34bde7ab933c495b066e8f70595a6047e4c74c11b8a434ed6f82","sha256:d55acdac3bc87c53437129a120aac9d739b196a47ff84439eae16832e81cd8ea"],"state_sha256":"b3c91ef514217b1ef6e8865ed8a99ee4e566e6df86ae01d68d75c4a7f857699c"}