{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:AQ7TXJFQBA44CCAN4NXRP3AZCL","short_pith_number":"pith:AQ7TXJFQ","canonical_record":{"source":{"id":"physics/0508048","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.atom-ph","submitted_at":"2005-08-08T17:00:26Z","cross_cats_sorted":["physics.ins-det","quant-ph"],"title_canon_sha256":"acdda593e8af43262ec7e7d51b5ce4ee9211c79615742dba17460ad07acf38b3","abstract_canon_sha256":"5310a2af6a6c6a0cf8ee809d3deee3c6ab439827cde8bba7a132a1a486dec21f"},"schema_version":"1.0"},"canonical_sha256":"043f3ba4b00839c1080de36f17ec1912c78064c4c58951d3118e5d698de8b167","source":{"kind":"arxiv","id":"physics/0508048","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0508048","created_at":"2026-05-18T01:08:46Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0508048v1","created_at":"2026-05-18T01:08:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0508048","created_at":"2026-05-18T01:08:46Z"},{"alias_kind":"pith_short_12","alias_value":"AQ7TXJFQBA44","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"AQ7TXJFQBA44CCAN","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"AQ7TXJFQ","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:AQ7TXJFQBA44CCAN4NXRP3AZCL","target":"record","payload":{"canonical_record":{"source":{"id":"physics/0508048","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.atom-ph","submitted_at":"2005-08-08T17:00:26Z","cross_cats_sorted":["physics.ins-det","quant-ph"],"title_canon_sha256":"acdda593e8af43262ec7e7d51b5ce4ee9211c79615742dba17460ad07acf38b3","abstract_canon_sha256":"5310a2af6a6c6a0cf8ee809d3deee3c6ab439827cde8bba7a132a1a486dec21f"},"schema_version":"1.0"},"canonical_sha256":"043f3ba4b00839c1080de36f17ec1912c78064c4c58951d3118e5d698de8b167","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:46.928808Z","signature_b64":"PJB2/dhmAC59I7YU09gdTdyESooYHTT8tDz1ynOr0GDmgtHW/8Ky5JnjsTGHDBdUXmCQhep8jdShqbltH4LWCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"043f3ba4b00839c1080de36f17ec1912c78064c4c58951d3118e5d698de8b167","last_reissued_at":"2026-05-18T01:08:46.928145Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:46.928145Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"physics/0508048","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":"2026-05-18T01:08:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OedLLcK+bJggVF7pww3EsK0rPTvuCE+WVxMr2FGy6Zxe7YDxUO/m5WomY8AKqp0omAOsYVQfMWMWOfKtq1KbDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T17:32:50.562566Z"},"content_sha256":"e5a44fd749b7297a3eeb16f1542653c1d2cd3f9b98d79bd1b23d7e6b45e71156","schema_version":"1.0","event_id":"sha256:e5a44fd749b7297a3eeb16f1542653c1d2cd3f9b98d79bd1b23d7e6b45e71156"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:AQ7TXJFQBA44CCAN4NXRP3AZCL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A High Efficiency Ultra High Vacuum Compatible Flat Field Spectrometer for EUV Wavelengths","license":"","headline":"","cross_cats":["physics.ins-det","quant-ph"],"primary_cat":"physics.atom-ph","authors_text":"A. Aguilar, B. Blagojevic, Eric-Olivier Le Bigot (LKB - Jussieu), E. Tak\\'acs, J. D. Gillaspy, J. H. Burnett, J. M. Pomeroy, J. N. Tan, J. R. Roberts, K. Fahy, K. Makonyi","submitted_at":"2005-08-08T17:00:26Z","abstract_excerpt":"A custom, flat field, extreme ultraviolet EUV spectrometer built specifically for use with low power light sources that operate under ultrahigh vacuum conditions is reported. The spectral range of the spectrometer extends from 4 nm to 40 nm. The instrument optimizes the light gathering power and signal to noise ratio while achieving good resolution. A detailed description of the spectrometer and design considerations are presented, as well as a novel procedure that could be used to obtain a synthetic wavelength calibration with the aid of only a single known spectral feature. This synthetic wa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0508048","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":"2026-05-18T01:08:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V4jVMLkv+7m5vX5t+cRUzH1wAYVhaIy4IZSAemxUEU1J2YF6/x1VBSu2DmKotXvlzaVspZ+C1VFUt62kmNSiAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T17:32:50.563230Z"},"content_sha256":"29922da9603f66267d60e204d91a1e54772ffcd525eed215bb0922278078ce76","schema_version":"1.0","event_id":"sha256:29922da9603f66267d60e204d91a1e54772ffcd525eed215bb0922278078ce76"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AQ7TXJFQBA44CCAN4NXRP3AZCL/bundle.json","state_url":"https://pith.science/pith/AQ7TXJFQBA44CCAN4NXRP3AZCL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AQ7TXJFQBA44CCAN4NXRP3AZCL/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":"2026-05-27T17:32:50Z","links":{"resolver":"https://pith.science/pith/AQ7TXJFQBA44CCAN4NXRP3AZCL","bundle":"https://pith.science/pith/AQ7TXJFQBA44CCAN4NXRP3AZCL/bundle.json","state":"https://pith.science/pith/AQ7TXJFQBA44CCAN4NXRP3AZCL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AQ7TXJFQBA44CCAN4NXRP3AZCL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:AQ7TXJFQBA44CCAN4NXRP3AZCL","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":"5310a2af6a6c6a0cf8ee809d3deee3c6ab439827cde8bba7a132a1a486dec21f","cross_cats_sorted":["physics.ins-det","quant-ph"],"license":"","primary_cat":"physics.atom-ph","submitted_at":"2005-08-08T17:00:26Z","title_canon_sha256":"acdda593e8af43262ec7e7d51b5ce4ee9211c79615742dba17460ad07acf38b3"},"schema_version":"1.0","source":{"id":"physics/0508048","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0508048","created_at":"2026-05-18T01:08:46Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0508048v1","created_at":"2026-05-18T01:08:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0508048","created_at":"2026-05-18T01:08:46Z"},{"alias_kind":"pith_short_12","alias_value":"AQ7TXJFQBA44","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"AQ7TXJFQBA44CCAN","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"AQ7TXJFQ","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:29922da9603f66267d60e204d91a1e54772ffcd525eed215bb0922278078ce76","target":"graph","created_at":"2026-05-18T01:08:46Z","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":"A custom, flat field, extreme ultraviolet EUV spectrometer built specifically for use with low power light sources that operate under ultrahigh vacuum conditions is reported. The spectral range of the spectrometer extends from 4 nm to 40 nm. The instrument optimizes the light gathering power and signal to noise ratio while achieving good resolution. A detailed description of the spectrometer and design considerations are presented, as well as a novel procedure that could be used to obtain a synthetic wavelength calibration with the aid of only a single known spectral feature. This synthetic wa","authors_text":"A. Aguilar, B. Blagojevic, Eric-Olivier Le Bigot (LKB - Jussieu), E. Tak\\'acs, J. D. Gillaspy, J. H. Burnett, J. M. Pomeroy, J. N. Tan, J. R. Roberts, K. Fahy, K. Makonyi","cross_cats":["physics.ins-det","quant-ph"],"headline":"","license":"","primary_cat":"physics.atom-ph","submitted_at":"2005-08-08T17:00:26Z","title":"A High Efficiency Ultra High Vacuum Compatible Flat Field Spectrometer for EUV Wavelengths"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0508048","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:e5a44fd749b7297a3eeb16f1542653c1d2cd3f9b98d79bd1b23d7e6b45e71156","target":"record","created_at":"2026-05-18T01:08:46Z","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":"5310a2af6a6c6a0cf8ee809d3deee3c6ab439827cde8bba7a132a1a486dec21f","cross_cats_sorted":["physics.ins-det","quant-ph"],"license":"","primary_cat":"physics.atom-ph","submitted_at":"2005-08-08T17:00:26Z","title_canon_sha256":"acdda593e8af43262ec7e7d51b5ce4ee9211c79615742dba17460ad07acf38b3"},"schema_version":"1.0","source":{"id":"physics/0508048","kind":"arxiv","version":1}},"canonical_sha256":"043f3ba4b00839c1080de36f17ec1912c78064c4c58951d3118e5d698de8b167","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"043f3ba4b00839c1080de36f17ec1912c78064c4c58951d3118e5d698de8b167","first_computed_at":"2026-05-18T01:08:46.928145Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:46.928145Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PJB2/dhmAC59I7YU09gdTdyESooYHTT8tDz1ynOr0GDmgtHW/8Ky5JnjsTGHDBdUXmCQhep8jdShqbltH4LWCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:46.928808Z","signed_message":"canonical_sha256_bytes"},"source_id":"physics/0508048","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e5a44fd749b7297a3eeb16f1542653c1d2cd3f9b98d79bd1b23d7e6b45e71156","sha256:29922da9603f66267d60e204d91a1e54772ffcd525eed215bb0922278078ce76"],"state_sha256":"c8cd35297395c54f4648282b88b08a27028948e813518893dce1795f892a132a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AV9bfggz/N7hK3qPJ7lMqZZlXhNmqfzVpomsp6WERS5i14N5ZrQx/KaBmn84AjO+rN26fUJdIFbkSI8iuo+nCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T17:32:50.566724Z","bundle_sha256":"f3dc1158198195bed27e1d2670e4b04d0ffbb1e8d9f41a84ae7edb6ce1291dcd"}}