{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:YLQWOJDNB6XMO2RPMV6FRAGXKT","short_pith_number":"pith:YLQWOJDN","canonical_record":{"source":{"id":"1403.4826","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2014-03-19T14:45:36Z","cross_cats_sorted":[],"title_canon_sha256":"1f3ef16a026b2414d83125147472fb989495b91edca5e08bb590d4e02b217840","abstract_canon_sha256":"da6008d876bdce04f80eeef7dec04fbc4d2fbac0b6da57b230ee28dffc40dd1b"},"schema_version":"1.0"},"canonical_sha256":"c2e167246d0faec76a2f657c5880d754e4681ce78f2d8b6b957d6e0c1e31122f","source":{"kind":"arxiv","id":"1403.4826","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.4826","created_at":"2026-05-18T02:48:19Z"},{"alias_kind":"arxiv_version","alias_value":"1403.4826v3","created_at":"2026-05-18T02:48:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.4826","created_at":"2026-05-18T02:48:19Z"},{"alias_kind":"pith_short_12","alias_value":"YLQWOJDNB6XM","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"YLQWOJDNB6XMO2RP","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"YLQWOJDN","created_at":"2026-05-18T12:28:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:YLQWOJDNB6XMO2RPMV6FRAGXKT","target":"record","payload":{"canonical_record":{"source":{"id":"1403.4826","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2014-03-19T14:45:36Z","cross_cats_sorted":[],"title_canon_sha256":"1f3ef16a026b2414d83125147472fb989495b91edca5e08bb590d4e02b217840","abstract_canon_sha256":"da6008d876bdce04f80eeef7dec04fbc4d2fbac0b6da57b230ee28dffc40dd1b"},"schema_version":"1.0"},"canonical_sha256":"c2e167246d0faec76a2f657c5880d754e4681ce78f2d8b6b957d6e0c1e31122f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:48:19.004931Z","signature_b64":"dWNYvY1JYEaB5lFlerN7ZNCJCG8yn72lbJFguC44qD1tpOVzGZE0dhO4zyq9yqSV4bLjSRM6rwqLk8ndDGAXAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c2e167246d0faec76a2f657c5880d754e4681ce78f2d8b6b957d6e0c1e31122f","last_reissued_at":"2026-05-18T02:48:19.004536Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:48:19.004536Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1403.4826","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:48:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OO9DTbS+3MM1snHSiQ8OIMudNB6hNm67I2ZYhfmPtTexlpEI0H8tqR+7g3PdiuIy1lSbR9dhJk2d03z/eM9TDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T13:59:50.104007Z"},"content_sha256":"17e0cef66f29fd9dbfc288d962557e45bff4de0900395b39fb65900e79e8661d","schema_version":"1.0","event_id":"sha256:17e0cef66f29fd9dbfc288d962557e45bff4de0900395b39fb65900e79e8661d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:YLQWOJDNB6XMO2RPMV6FRAGXKT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Exploring the temporally resolved electron density evolution in EUV induced plasmas","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"G.M.W. Kroesen, J. Beckers, R.M. van der Horst, S. Nijdam","submitted_at":"2014-03-19T14:45:36Z","abstract_excerpt":"We measured for the first time the electron density in an Extreme Ultra-Violet induced plasma. This is achieved in a low-pressure argon plasma by using a method called microwave cavity resonance spectroscopy. The measured electron density just after the EUV pulse is $2.6\\cdot10^{16}$ m$^{-3}$. This is in good agreement with a theoretical prediction from photo ionization, which yields a density of $4.5\\cdot10^{16}$ m$^{-3}$. After the EUV pulse the density slightly increase due to electron impact ionization. The plasma (i.e. electron density) decays in tens of microseconds."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.4826","kind":"arxiv","version":3},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:48:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kAMcEazFBnAayuXmVFiLwyM2j1/Gg+KG+0OJt1EH/stjGCmVvgEF9Ev7g3udVEtl24YkTz+vvc9Vq0EUJTjaBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T13:59:50.104699Z"},"content_sha256":"ac75e79a611aa32c873ae465e46939b2be9f8da6bf83df914b2ce13cf2dfa162","schema_version":"1.0","event_id":"sha256:ac75e79a611aa32c873ae465e46939b2be9f8da6bf83df914b2ce13cf2dfa162"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YLQWOJDNB6XMO2RPMV6FRAGXKT/bundle.json","state_url":"https://pith.science/pith/YLQWOJDNB6XMO2RPMV6FRAGXKT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YLQWOJDNB6XMO2RPMV6FRAGXKT/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-30T13:59:50Z","links":{"resolver":"https://pith.science/pith/YLQWOJDNB6XMO2RPMV6FRAGXKT","bundle":"https://pith.science/pith/YLQWOJDNB6XMO2RPMV6FRAGXKT/bundle.json","state":"https://pith.science/pith/YLQWOJDNB6XMO2RPMV6FRAGXKT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YLQWOJDNB6XMO2RPMV6FRAGXKT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:YLQWOJDNB6XMO2RPMV6FRAGXKT","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":"da6008d876bdce04f80eeef7dec04fbc4d2fbac0b6da57b230ee28dffc40dd1b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2014-03-19T14:45:36Z","title_canon_sha256":"1f3ef16a026b2414d83125147472fb989495b91edca5e08bb590d4e02b217840"},"schema_version":"1.0","source":{"id":"1403.4826","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.4826","created_at":"2026-05-18T02:48:19Z"},{"alias_kind":"arxiv_version","alias_value":"1403.4826v3","created_at":"2026-05-18T02:48:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.4826","created_at":"2026-05-18T02:48:19Z"},{"alias_kind":"pith_short_12","alias_value":"YLQWOJDNB6XM","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"YLQWOJDNB6XMO2RP","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"YLQWOJDN","created_at":"2026-05-18T12:28:57Z"}],"graph_snapshots":[{"event_id":"sha256:ac75e79a611aa32c873ae465e46939b2be9f8da6bf83df914b2ce13cf2dfa162","target":"graph","created_at":"2026-05-18T02:48:19Z","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 measured for the first time the electron density in an Extreme Ultra-Violet induced plasma. This is achieved in a low-pressure argon plasma by using a method called microwave cavity resonance spectroscopy. The measured electron density just after the EUV pulse is $2.6\\cdot10^{16}$ m$^{-3}$. This is in good agreement with a theoretical prediction from photo ionization, which yields a density of $4.5\\cdot10^{16}$ m$^{-3}$. After the EUV pulse the density slightly increase due to electron impact ionization. The plasma (i.e. electron density) decays in tens of microseconds.","authors_text":"G.M.W. Kroesen, J. Beckers, R.M. van der Horst, S. Nijdam","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2014-03-19T14:45:36Z","title":"Exploring the temporally resolved electron density evolution in EUV induced plasmas"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.4826","kind":"arxiv","version":3},"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":"sha256:17e0cef66f29fd9dbfc288d962557e45bff4de0900395b39fb65900e79e8661d","target":"record","created_at":"2026-05-18T02:48:19Z","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":"da6008d876bdce04f80eeef7dec04fbc4d2fbac0b6da57b230ee28dffc40dd1b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2014-03-19T14:45:36Z","title_canon_sha256":"1f3ef16a026b2414d83125147472fb989495b91edca5e08bb590d4e02b217840"},"schema_version":"1.0","source":{"id":"1403.4826","kind":"arxiv","version":3}},"canonical_sha256":"c2e167246d0faec76a2f657c5880d754e4681ce78f2d8b6b957d6e0c1e31122f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c2e167246d0faec76a2f657c5880d754e4681ce78f2d8b6b957d6e0c1e31122f","first_computed_at":"2026-05-18T02:48:19.004536Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:48:19.004536Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dWNYvY1JYEaB5lFlerN7ZNCJCG8yn72lbJFguC44qD1tpOVzGZE0dhO4zyq9yqSV4bLjSRM6rwqLk8ndDGAXAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:48:19.004931Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.4826","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:17e0cef66f29fd9dbfc288d962557e45bff4de0900395b39fb65900e79e8661d","sha256:ac75e79a611aa32c873ae465e46939b2be9f8da6bf83df914b2ce13cf2dfa162"],"state_sha256":"86a08d4a569e5aa576329dfc780f99cf073ec164ab5769f030344c817b7222d1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0tYKclFo+xhszyXVQYFZ2UjzhK0drpUe/0/iffwdiGmuQUXH5k7eq/vHgnGowmYo8h2HXvzSp57/9LgRH+ysBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T13:59:50.108436Z","bundle_sha256":"75fb08ae23fa3509655d51f0ca651c565dff3000ec70855bbb7018ceaf9c42f4"}}