{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:5F6KBUU5FRIVW3G2EY7D5OWMAY","short_pith_number":"pith:5F6KBUU5","canonical_record":{"source":{"id":"1805.05767","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-15T13:46:29Z","cross_cats_sorted":[],"title_canon_sha256":"e054e656f41fb0baa415834702722889df2861928cb4819b08be5ab33668cbd1","abstract_canon_sha256":"36146122d870e9ad82a77ef0832823b145db111c937c3a2cca2d47d8ad100cd1"},"schema_version":"1.0"},"canonical_sha256":"e97ca0d29d2c515b6cda263e3ebacc063d6098d6b536ea8e0b5dc68249e716fd","source":{"kind":"arxiv","id":"1805.05767","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.05767","created_at":"2026-05-18T00:11:49Z"},{"alias_kind":"arxiv_version","alias_value":"1805.05767v1","created_at":"2026-05-18T00:11:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.05767","created_at":"2026-05-18T00:11:49Z"},{"alias_kind":"pith_short_12","alias_value":"5F6KBUU5FRIV","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"5F6KBUU5FRIVW3G2","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"5F6KBUU5","created_at":"2026-05-18T12:32:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:5F6KBUU5FRIVW3G2EY7D5OWMAY","target":"record","payload":{"canonical_record":{"source":{"id":"1805.05767","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-15T13:46:29Z","cross_cats_sorted":[],"title_canon_sha256":"e054e656f41fb0baa415834702722889df2861928cb4819b08be5ab33668cbd1","abstract_canon_sha256":"36146122d870e9ad82a77ef0832823b145db111c937c3a2cca2d47d8ad100cd1"},"schema_version":"1.0"},"canonical_sha256":"e97ca0d29d2c515b6cda263e3ebacc063d6098d6b536ea8e0b5dc68249e716fd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:11:49.085439Z","signature_b64":"HE80HcyMcVgAcxwdJUWQaYQ/7i79O0xArM67aP6ghzz1da/PryoOzh1bUGChmRZd2AhL4/0sY9SKEP+dr7dZDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e97ca0d29d2c515b6cda263e3ebacc063d6098d6b536ea8e0b5dc68249e716fd","last_reissued_at":"2026-05-18T00:11:49.084672Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:11:49.084672Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.05767","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:11:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3L3/Wte0x/awLtsJzaMjjrDWm9cr9c2UfML4O6TopRmbiMnkJYcbY/5IpMBrpe43jcBHnn+nrznb/RxbglFUBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T16:08:37.396451Z"},"content_sha256":"4c75bdf321c48b6bc78a015d144040ca31c4a6f2cc84ffa8d984d3aa1d2a054a","schema_version":"1.0","event_id":"sha256:4c75bdf321c48b6bc78a015d144040ca31c4a6f2cc84ffa8d984d3aa1d2a054a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:5F6KBUU5FRIVW3G2EY7D5OWMAY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Production of photoionized plasmas in the laboratory using X-ray line radiation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"B Han, D Riley, E G Hill, F P Keenan, F Wang, G Gribakin, G J Ferland, G Sarri, G Zhao, R Irwin, R Warwick, S J Rose, S White","submitted_at":"2018-05-15T13:46:29Z","abstract_excerpt":"In this paper we report the experimental implementation of a theoretically-proposed technique for creating a photoionized plasma in the laboratory using X-ray line radiation. Using a Sn laser-plasma to irradiate an Ar gas target, the photoionization parameter, \\xi = 4{\\pi}F/Ne, reached values of order 50 erg cm/s, where F is the radiation flux in erg/cm2/s. The significance of this is that this technique allows us to mimic effective spectral radiation temperatures in excess of 1 keV. We show that our plasma starts to be collisionally dominated before the peak of the X-ray drive. However, the t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.05767","kind":"arxiv","version":1},"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":"2026-05-18T00:11:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SETvzmbCfzz3Xqmo5QlFEG7YYG1sDADsu+QU36K1kzmctRuPW+X0BZ7ECGG9pJKb36jQ5aUGEnDsvmRFvG1kCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T16:08:37.396797Z"},"content_sha256":"4893e9285ddef59e795907cb4d4ff87f3378114e1fb87801dc6609ec38b99e48","schema_version":"1.0","event_id":"sha256:4893e9285ddef59e795907cb4d4ff87f3378114e1fb87801dc6609ec38b99e48"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5F6KBUU5FRIVW3G2EY7D5OWMAY/bundle.json","state_url":"https://pith.science/pith/5F6KBUU5FRIVW3G2EY7D5OWMAY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5F6KBUU5FRIVW3G2EY7D5OWMAY/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":"2026-06-03T16:08:37Z","links":{"resolver":"https://pith.science/pith/5F6KBUU5FRIVW3G2EY7D5OWMAY","bundle":"https://pith.science/pith/5F6KBUU5FRIVW3G2EY7D5OWMAY/bundle.json","state":"https://pith.science/pith/5F6KBUU5FRIVW3G2EY7D5OWMAY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5F6KBUU5FRIVW3G2EY7D5OWMAY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:5F6KBUU5FRIVW3G2EY7D5OWMAY","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":"36146122d870e9ad82a77ef0832823b145db111c937c3a2cca2d47d8ad100cd1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-15T13:46:29Z","title_canon_sha256":"e054e656f41fb0baa415834702722889df2861928cb4819b08be5ab33668cbd1"},"schema_version":"1.0","source":{"id":"1805.05767","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.05767","created_at":"2026-05-18T00:11:49Z"},{"alias_kind":"arxiv_version","alias_value":"1805.05767v1","created_at":"2026-05-18T00:11:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.05767","created_at":"2026-05-18T00:11:49Z"},{"alias_kind":"pith_short_12","alias_value":"5F6KBUU5FRIV","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"5F6KBUU5FRIVW3G2","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"5F6KBUU5","created_at":"2026-05-18T12:32:08Z"}],"graph_snapshots":[{"event_id":"sha256:4893e9285ddef59e795907cb4d4ff87f3378114e1fb87801dc6609ec38b99e48","target":"graph","created_at":"2026-05-18T00:11:49Z","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":"In this paper we report the experimental implementation of a theoretically-proposed technique for creating a photoionized plasma in the laboratory using X-ray line radiation. Using a Sn laser-plasma to irradiate an Ar gas target, the photoionization parameter, \\xi = 4{\\pi}F/Ne, reached values of order 50 erg cm/s, where F is the radiation flux in erg/cm2/s. The significance of this is that this technique allows us to mimic effective spectral radiation temperatures in excess of 1 keV. We show that our plasma starts to be collisionally dominated before the peak of the X-ray drive. However, the t","authors_text":"B Han, D Riley, E G Hill, F P Keenan, F Wang, G Gribakin, G J Ferland, G Sarri, G Zhao, R Irwin, R Warwick, S J Rose, S White","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-15T13:46:29Z","title":"Production of photoionized plasmas in the laboratory using X-ray line radiation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.05767","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":"sha256:4c75bdf321c48b6bc78a015d144040ca31c4a6f2cc84ffa8d984d3aa1d2a054a","target":"record","created_at":"2026-05-18T00:11:49Z","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":"36146122d870e9ad82a77ef0832823b145db111c937c3a2cca2d47d8ad100cd1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-15T13:46:29Z","title_canon_sha256":"e054e656f41fb0baa415834702722889df2861928cb4819b08be5ab33668cbd1"},"schema_version":"1.0","source":{"id":"1805.05767","kind":"arxiv","version":1}},"canonical_sha256":"e97ca0d29d2c515b6cda263e3ebacc063d6098d6b536ea8e0b5dc68249e716fd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e97ca0d29d2c515b6cda263e3ebacc063d6098d6b536ea8e0b5dc68249e716fd","first_computed_at":"2026-05-18T00:11:49.084672Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:11:49.084672Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HE80HcyMcVgAcxwdJUWQaYQ/7i79O0xArM67aP6ghzz1da/PryoOzh1bUGChmRZd2AhL4/0sY9SKEP+dr7dZDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:11:49.085439Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.05767","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4c75bdf321c48b6bc78a015d144040ca31c4a6f2cc84ffa8d984d3aa1d2a054a","sha256:4893e9285ddef59e795907cb4d4ff87f3378114e1fb87801dc6609ec38b99e48"],"state_sha256":"c6b55b754d13e6692424f0404be8661803581e6c646b5428d2c4817981f8a65c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KeSfwqXcoXRZxPifzdET18xXARYw4+0/Os2c/aZrWUSg2/JUOHv+gHzqHGXQQ2WEb6ItDS/gUk3Qq09F+ECECw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T16:08:37.398693Z","bundle_sha256":"de125c0bec62c46694e405630c4ea77fccfc3e841a0635c287706853b0527b6a"}}