{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:ZQGI5PSBUPHL4H6SFO6FEVTQOV","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":"96508fc6b3840e16a20cc8975643f5727ea9deb687c12fc3b7f8f1da25560667","cross_cats_sorted":["physics.optics"],"license":"","primary_cat":"physics.plasm-ph","submitted_at":"2006-10-17T12:16:38Z","title_canon_sha256":"4a0b4a55ec5b858626ed28e0fb99d6af31d7679ad3538049f6f08f36b6d40046"},"schema_version":"1.0","source":{"id":"physics/0610126","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0610126","created_at":"2026-05-18T01:38:06Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0610126v1","created_at":"2026-05-18T01:38:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0610126","created_at":"2026-05-18T01:38:06Z"},{"alias_kind":"pith_short_12","alias_value":"ZQGI5PSBUPHL","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"ZQGI5PSBUPHL4H6S","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"ZQGI5PSB","created_at":"2026-05-18T12:25:54Z"}],"graph_snapshots":[{"event_id":"sha256:3d6fc2ca9a9a6105a839da2d9edf63202986387343c75af689cc7ce5f32721f9","target":"graph","created_at":"2026-05-18T01:38:06Z","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"},"paper":{"abstract_excerpt":"We present the effect of a nanostructured surface on the emission of ions and electrons from intense (5-36 Petwatt per sq.cm) femtosecond laser produced plasmas. Electrons from optically polished copper targets coated with copper nanoparticles (CuNP) are observed to be hotter than those from uncoated polished targets. A nearly two-fold enhancement is observed for ions in the range 14-74 keV, while ion yield decreases by a factor of 2 in the 74-2000 keV range. The total ion yields measured using a large area Faraday cup are more from CuNP targets than those from polished Cu targets, indicating ","authors_text":"G. Ravindra Kumar, M.K. Bhuyan, M. Krishnamurthy, P. Ayyub, P. Prem Kiran, S. Bagchi, S. Bose","cross_cats":["physics.optics"],"headline":"","license":"","primary_cat":"physics.plasm-ph","submitted_at":"2006-10-17T12:16:38Z","title":"Hot ion generation from nanostructured surfaces under intense, femtosecond irradiation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0610126","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":"sha256:9f24bfbf83094538321742c9b4ec9c6a0f05b716dd2f1ad4aaf75c95eb742469","target":"record","created_at":"2026-05-18T01:38:06Z","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":"96508fc6b3840e16a20cc8975643f5727ea9deb687c12fc3b7f8f1da25560667","cross_cats_sorted":["physics.optics"],"license":"","primary_cat":"physics.plasm-ph","submitted_at":"2006-10-17T12:16:38Z","title_canon_sha256":"4a0b4a55ec5b858626ed28e0fb99d6af31d7679ad3538049f6f08f36b6d40046"},"schema_version":"1.0","source":{"id":"physics/0610126","kind":"arxiv","version":1}},"canonical_sha256":"cc0c8ebe41a3cebe1fd22bbc525670754cae4e5a3c89c2f96d2521e4042ea075","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cc0c8ebe41a3cebe1fd22bbc525670754cae4e5a3c89c2f96d2521e4042ea075","first_computed_at":"2026-05-18T01:38:06.508371Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:38:06.508371Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+Wg+TZ8/AkJ6H9cbqJYolC/kCC2kf/KSMSJIGiG5n+ZoQWmVxA0GJvIFxfuXK4ELEkXrjKs1sHZeSqwAsfW9AA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:38:06.508843Z","signed_message":"canonical_sha256_bytes"},"source_id":"physics/0610126","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9f24bfbf83094538321742c9b4ec9c6a0f05b716dd2f1ad4aaf75c95eb742469","sha256:3d6fc2ca9a9a6105a839da2d9edf63202986387343c75af689cc7ce5f32721f9"],"state_sha256":"9998d17d8e9e4972770863975f1370a046962a3770373b9788fb6b6dd3bd4932"}