{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:OARTSGBBLHQRCK4GDQ76SKZMTQ","short_pith_number":"pith:OARTSGBB","canonical_record":{"source":{"id":"1605.04236","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-05-13T16:16:47Z","cross_cats_sorted":[],"title_canon_sha256":"3e829e0e23d2a8f2ce5a5d03511de6680fa6826130afac879464bcc858fd80e1","abstract_canon_sha256":"b990270769cf0b81d81e555f18f73e7c9c545867cd74ad28a320c5405b13292e"},"schema_version":"1.0"},"canonical_sha256":"702339182159e1112b861c3fe92b2c9c35d1c19b0740b0ec8ddf3b9142d01c80","source":{"kind":"arxiv","id":"1605.04236","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.04236","created_at":"2026-05-18T00:25:05Z"},{"alias_kind":"arxiv_version","alias_value":"1605.04236v1","created_at":"2026-05-18T00:25:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.04236","created_at":"2026-05-18T00:25:05Z"},{"alias_kind":"pith_short_12","alias_value":"OARTSGBBLHQR","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"OARTSGBBLHQRCK4G","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"OARTSGBB","created_at":"2026-05-18T12:30:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:OARTSGBBLHQRCK4GDQ76SKZMTQ","target":"record","payload":{"canonical_record":{"source":{"id":"1605.04236","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-05-13T16:16:47Z","cross_cats_sorted":[],"title_canon_sha256":"3e829e0e23d2a8f2ce5a5d03511de6680fa6826130afac879464bcc858fd80e1","abstract_canon_sha256":"b990270769cf0b81d81e555f18f73e7c9c545867cd74ad28a320c5405b13292e"},"schema_version":"1.0"},"canonical_sha256":"702339182159e1112b861c3fe92b2c9c35d1c19b0740b0ec8ddf3b9142d01c80","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:25:05.930974Z","signature_b64":"oDyf488RYZ+I82nWeooowlWNLkj/jWf2Uh9JtfZsuTVTtrboc2rmUpohr0+6LhhaRKDzzKQdUuCyFSXNbRoIDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"702339182159e1112b861c3fe92b2c9c35d1c19b0740b0ec8ddf3b9142d01c80","last_reissued_at":"2026-05-18T00:25:05.930568Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:25:05.930568Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1605.04236","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":"2026-05-18T00:25:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gjzl9pFVDdY3e5sDxIwLnZjw6i/0otassarncldqR1QKlJ0jrJT5sa1C6SlbcG9a6oDGrtDOGnH4zSDWtyitAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T16:36:01.186227Z"},"content_sha256":"bf93e6f2c337974c973af6952d57b1e38ade26a7f2d3a8d00261243fb16f365e","schema_version":"1.0","event_id":"sha256:bf93e6f2c337974c973af6952d57b1e38ade26a7f2d3a8d00261243fb16f365e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:OARTSGBBLHQRCK4GDQ76SKZMTQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Analysis of the fine structure of Sn$^{11+...14+}$ ions by optical spectroscopy in an electron beam ion trap","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"1081 HV Amsterdam, 108840 Russia, 1098 XG Amsterdam, 2), (2) Max-Planck-Institut f\\\"ur Kernphysik, 3), (3) Department of Physics, (4) The Van Swinderen Institute, (5) Institute of Spectroscopy, 6), 69117 Heidelberg, 69978 Tel Aviv, (6) EUV Labs, (7) School of Chemistry, 8), (8) Zernike Institute for Advanced Materials, 9747 AG Groningen, A. Borschevsky (4), A. Ryabtsev (5, Astronomy, A. Windberger (1, De Boelelaan 1081, E. Eliav (7), F. Torretti (1, Germany, H. Bekker (2), Israel, J. R. Crespo L\\'opez-Urrutia (2), LaserLaB, Ltd., Moscow, Nijenborgh 4, O. O. Versolato (1) ((1) Advanced Research Center for Nanolithography, R. Hoekstra (1, Russian Academy of Sciences, Saupfercheckweg 1, Science Park 110, S. Dobrodey (2), Tel Aviv University, the Netherlands), The Netherlands, Troitsk, U. Kaldor (7), University of Groningen, Vrije Universiteit, W. Ubachs (1","submitted_at":"2016-05-13T16:16:47Z","abstract_excerpt":"We experimentally re-evaluate the fine structure of Sn$^{11+...14+}$ ions. These ions are essential in bright extreme-ultraviolet (EUV) plasma-light sources for next-generation nanolithography, but their complex electronic structure is an open challenge for both theory and experiment. We combine optical spectroscopy of magnetic dipole $M1$ transitions, in a wavelength range covering 260\\,nm to 780\\,nm, with charge-state selective ionization in an electron beam ion trap. Our measurements confirm the predictive power of \\emph{ab initio} calculations based on Fock space coupled cluster theory. We"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.04236","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":"2026-05-18T00:25:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mdkBTQb8aDkJ63ZobNipettgxTUFEOPn+qckG35jgNDRTNiA4jIix/pPAClLbfcKxyQTqdFsdPLGKFKjcUU4Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T16:36:01.186669Z"},"content_sha256":"a1b22b35b5e28567c0d2d5205cc4f61e02b85a2c385546f3b1212cc74a2fc6e3","schema_version":"1.0","event_id":"sha256:a1b22b35b5e28567c0d2d5205cc4f61e02b85a2c385546f3b1212cc74a2fc6e3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OARTSGBBLHQRCK4GDQ76SKZMTQ/bundle.json","state_url":"https://pith.science/pith/OARTSGBBLHQRCK4GDQ76SKZMTQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OARTSGBBLHQRCK4GDQ76SKZMTQ/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":"2026-05-30T16:36:01Z","links":{"resolver":"https://pith.science/pith/OARTSGBBLHQRCK4GDQ76SKZMTQ","bundle":"https://pith.science/pith/OARTSGBBLHQRCK4GDQ76SKZMTQ/bundle.json","state":"https://pith.science/pith/OARTSGBBLHQRCK4GDQ76SKZMTQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OARTSGBBLHQRCK4GDQ76SKZMTQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:OARTSGBBLHQRCK4GDQ76SKZMTQ","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":"b990270769cf0b81d81e555f18f73e7c9c545867cd74ad28a320c5405b13292e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-05-13T16:16:47Z","title_canon_sha256":"3e829e0e23d2a8f2ce5a5d03511de6680fa6826130afac879464bcc858fd80e1"},"schema_version":"1.0","source":{"id":"1605.04236","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.04236","created_at":"2026-05-18T00:25:05Z"},{"alias_kind":"arxiv_version","alias_value":"1605.04236v1","created_at":"2026-05-18T00:25:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.04236","created_at":"2026-05-18T00:25:05Z"},{"alias_kind":"pith_short_12","alias_value":"OARTSGBBLHQR","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"OARTSGBBLHQRCK4G","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"OARTSGBB","created_at":"2026-05-18T12:30:36Z"}],"graph_snapshots":[{"event_id":"sha256:a1b22b35b5e28567c0d2d5205cc4f61e02b85a2c385546f3b1212cc74a2fc6e3","target":"graph","created_at":"2026-05-18T00:25:05Z","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 experimentally re-evaluate the fine structure of Sn$^{11+...14+}$ ions. These ions are essential in bright extreme-ultraviolet (EUV) plasma-light sources for next-generation nanolithography, but their complex electronic structure is an open challenge for both theory and experiment. We combine optical spectroscopy of magnetic dipole $M1$ transitions, in a wavelength range covering 260\\,nm to 780\\,nm, with charge-state selective ionization in an electron beam ion trap. Our measurements confirm the predictive power of \\emph{ab initio} calculations based on Fock space coupled cluster theory. We","authors_text":"1081 HV Amsterdam, 108840 Russia, 1098 XG Amsterdam, 2), (2) Max-Planck-Institut f\\\"ur Kernphysik, 3), (3) Department of Physics, (4) The Van Swinderen Institute, (5) Institute of Spectroscopy, 6), 69117 Heidelberg, 69978 Tel Aviv, (6) EUV Labs, (7) School of Chemistry, 8), (8) Zernike Institute for Advanced Materials, 9747 AG Groningen, A. Borschevsky (4), A. Ryabtsev (5, Astronomy, A. Windberger (1, De Boelelaan 1081, E. Eliav (7), F. Torretti (1, Germany, H. Bekker (2), Israel, J. R. Crespo L\\'opez-Urrutia (2), LaserLaB, Ltd., Moscow, Nijenborgh 4, O. O. Versolato (1) ((1) Advanced Research Center for Nanolithography, R. Hoekstra (1, Russian Academy of Sciences, Saupfercheckweg 1, Science Park 110, S. Dobrodey (2), Tel Aviv University, the Netherlands), The Netherlands, Troitsk, U. Kaldor (7), University of Groningen, Vrije Universiteit, W. Ubachs (1","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-05-13T16:16:47Z","title":"Analysis of the fine structure of Sn$^{11+...14+}$ ions by optical spectroscopy in an electron beam ion trap"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.04236","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:bf93e6f2c337974c973af6952d57b1e38ade26a7f2d3a8d00261243fb16f365e","target":"record","created_at":"2026-05-18T00:25:05Z","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":"b990270769cf0b81d81e555f18f73e7c9c545867cd74ad28a320c5405b13292e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-05-13T16:16:47Z","title_canon_sha256":"3e829e0e23d2a8f2ce5a5d03511de6680fa6826130afac879464bcc858fd80e1"},"schema_version":"1.0","source":{"id":"1605.04236","kind":"arxiv","version":1}},"canonical_sha256":"702339182159e1112b861c3fe92b2c9c35d1c19b0740b0ec8ddf3b9142d01c80","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"702339182159e1112b861c3fe92b2c9c35d1c19b0740b0ec8ddf3b9142d01c80","first_computed_at":"2026-05-18T00:25:05.930568Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:25:05.930568Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oDyf488RYZ+I82nWeooowlWNLkj/jWf2Uh9JtfZsuTVTtrboc2rmUpohr0+6LhhaRKDzzKQdUuCyFSXNbRoIDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:25:05.930974Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.04236","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bf93e6f2c337974c973af6952d57b1e38ade26a7f2d3a8d00261243fb16f365e","sha256:a1b22b35b5e28567c0d2d5205cc4f61e02b85a2c385546f3b1212cc74a2fc6e3"],"state_sha256":"2a0e966b59dd1f0dc5190c821b64671b290ffd051361bdd00aa53f4f65fbd386"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j8NEftxuwONFdLIGlqbe80+JsKHo/2V8CrzZsdFN3AXgr7iOJS0b95atTESdkb4aV3ngh9KWnt5gh6+Z4Vp0AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T16:36:01.188973Z","bundle_sha256":"8283f989a8873fd6b3a892e469e8ebbdcebf09411482156c53421779300ef2d9"}}