{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:6PJBMFBYUH5266VHBTSQZTUKAR","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":"396fd0309f0bdf1701ad6f84f33e18403d4822f152a0a6228b3c1eaf0d64da32","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-08-19T04:25:11Z","title_canon_sha256":"070b4511ded96e219808de4f3812721e2acc3d8761dbe1955006550131549b81"},"schema_version":"1.0","source":{"id":"1808.07559","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.07559","created_at":"2026-05-18T00:07:26Z"},{"alias_kind":"arxiv_version","alias_value":"1808.07559v1","created_at":"2026-05-18T00:07:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.07559","created_at":"2026-05-18T00:07:26Z"},{"alias_kind":"pith_short_12","alias_value":"6PJBMFBYUH52","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"6PJBMFBYUH5266VH","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"6PJBMFBY","created_at":"2026-05-18T12:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:12584980ab98bbf718d7108330b60cba60af435234bd6fe6256292241a556974","target":"graph","created_at":"2026-05-18T00:07:26Z","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":"The optical design of a novel spectrometer is present, combining a cylindrically convex pre-mirror with a cylindrically concave VLS grating (both in meridional) to deliver a resolving power of 100,000-200,000 in 'water window' (2-5nm). More remarkably, unlike a typical RIXS spectrometer to obtain such high resolution by tight focusing or tiny confinement slit (<1{\\mu}m), here the resolution could be achieved for an effective meridional source size of 50{\\mu}m (r.m.s.). The overall optical aberrations of the system are well analysed and compensated, providing an excellent flat field at the dete","authors_text":"Bin Li, Zhuo Li","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-08-19T04:25:11Z","title":"Towards extremely high-resolution broad-band flat-field spectrometer in 'water window'"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.07559","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:eb1069449ae88d0f530d598d917b0f391e058838038b1496d341312192727e85","target":"record","created_at":"2026-05-18T00:07:26Z","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":"396fd0309f0bdf1701ad6f84f33e18403d4822f152a0a6228b3c1eaf0d64da32","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-08-19T04:25:11Z","title_canon_sha256":"070b4511ded96e219808de4f3812721e2acc3d8761dbe1955006550131549b81"},"schema_version":"1.0","source":{"id":"1808.07559","kind":"arxiv","version":1}},"canonical_sha256":"f3d2161438a1fbaf7aa70ce50cce8a0451d6289f994ebc13f809527b564c4f69","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f3d2161438a1fbaf7aa70ce50cce8a0451d6289f994ebc13f809527b564c4f69","first_computed_at":"2026-05-18T00:07:26.948984Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:26.948984Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ne/E0TIHDBtdaboFwP07y7jXKiRwrYrygHM6CbLyVxo1s+KZ0FCxpTd4BDNqqnnm4LEk9dKjKjezmSy6dLQDAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:26.949537Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.07559","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eb1069449ae88d0f530d598d917b0f391e058838038b1496d341312192727e85","sha256:12584980ab98bbf718d7108330b60cba60af435234bd6fe6256292241a556974"],"state_sha256":"43890f3cacf25e77dafa4ff5ba1c51c6c93c25fdbd5e02426e93f73f22208b33"}