{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:27Z6EK3WGBRBFAA5GVRCPVNELL","short_pith_number":"pith:27Z6EK3W","canonical_record":{"source":{"id":"1001.4986","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2010-01-27T16:56:12Z","cross_cats_sorted":[],"title_canon_sha256":"7f0a102913a5d89bcef32d23ddd9456e8d758e4071e94297bf18ac818d4c3c91","abstract_canon_sha256":"f00a4014e3aa4e20cc1bdfefd2b0f6858877e3777b08b3abacf4f00933adecdb"},"schema_version":"1.0"},"canonical_sha256":"d7f3e22b76306212801d356227d5a45aef787989dee2b1946b3bef81b604af3d","source":{"kind":"arxiv","id":"1001.4986","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.4986","created_at":"2026-05-18T01:09:24Z"},{"alias_kind":"arxiv_version","alias_value":"1001.4986v1","created_at":"2026-05-18T01:09:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.4986","created_at":"2026-05-18T01:09:24Z"},{"alias_kind":"pith_short_12","alias_value":"27Z6EK3WGBRB","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"27Z6EK3WGBRBFAA5","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"27Z6EK3W","created_at":"2026-05-18T12:26:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:27Z6EK3WGBRBFAA5GVRCPVNELL","target":"record","payload":{"canonical_record":{"source":{"id":"1001.4986","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2010-01-27T16:56:12Z","cross_cats_sorted":[],"title_canon_sha256":"7f0a102913a5d89bcef32d23ddd9456e8d758e4071e94297bf18ac818d4c3c91","abstract_canon_sha256":"f00a4014e3aa4e20cc1bdfefd2b0f6858877e3777b08b3abacf4f00933adecdb"},"schema_version":"1.0"},"canonical_sha256":"d7f3e22b76306212801d356227d5a45aef787989dee2b1946b3bef81b604af3d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:24.151743Z","signature_b64":"l7FZ3Xa8eD3NJUkp7gE5A9f9TeYVE9LS6hYPly3lE2BiiTn+5td4FWnEf3J2/K5xIWdK9ILdhQOVmBm4EcpACg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d7f3e22b76306212801d356227d5a45aef787989dee2b1946b3bef81b604af3d","last_reissued_at":"2026-05-18T01:09:24.151103Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:24.151103Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1001.4986","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":"2026-05-18T01:09:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5Td5XpxKQ/aQNY1ceFm61McS8eM2ydbTjtSC6XlzOIkpJkIBrSPrtL0NiWge9cvkGPmKWB01XoRTbVY23JJUBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T01:39:14.871112Z"},"content_sha256":"783d2b3905154739fd10e54af7d84378904d7c6134648212b24c3202c75dc6fb","schema_version":"1.0","event_id":"sha256:783d2b3905154739fd10e54af7d84378904d7c6134648212b24c3202c75dc6fb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:27Z6EK3WGBRBFAA5GVRCPVNELL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A spin- and angle-resolving photoelectron spectrometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"A. Hahlin, B. Wannberg, J. {\\AA}hlund, M. H. Berntsen, M. Leandersson, M. M{\\aa}nsson, O. Tjernberg, P. Palmgren","submitted_at":"2010-01-27T16:56:12Z","abstract_excerpt":"A new type of hemispherical electron energy analyzer that permits angle and spin resolved photoelectron spectroscopy has been developed. The analyzer permits standard angle resolved spectra to be recorded with a two-dimensional detector in parallel with spin detection using a mini-Mott polarimeter. General design considerations as well as technical solutions are discussed and test results from the Au(111) surface state are presented."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.4986","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":"2026-05-18T01:09:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fXKbDW00EIxM7YrM9IjGQXeJklae0g6gJPcc6YpyS7gKpqGdzpGAeVrDmOEvyzzStYrmbpiLqReGjfPNLb+5Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T01:39:14.871752Z"},"content_sha256":"415cbd14be4176fbba4a54fd97bbb2c86c29bcd5f2230c1c85b27181bb3887d4","schema_version":"1.0","event_id":"sha256:415cbd14be4176fbba4a54fd97bbb2c86c29bcd5f2230c1c85b27181bb3887d4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/27Z6EK3WGBRBFAA5GVRCPVNELL/bundle.json","state_url":"https://pith.science/pith/27Z6EK3WGBRBFAA5GVRCPVNELL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/27Z6EK3WGBRBFAA5GVRCPVNELL/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":"2026-05-26T01:39:14Z","links":{"resolver":"https://pith.science/pith/27Z6EK3WGBRBFAA5GVRCPVNELL","bundle":"https://pith.science/pith/27Z6EK3WGBRBFAA5GVRCPVNELL/bundle.json","state":"https://pith.science/pith/27Z6EK3WGBRBFAA5GVRCPVNELL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/27Z6EK3WGBRBFAA5GVRCPVNELL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:27Z6EK3WGBRBFAA5GVRCPVNELL","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":"f00a4014e3aa4e20cc1bdfefd2b0f6858877e3777b08b3abacf4f00933adecdb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2010-01-27T16:56:12Z","title_canon_sha256":"7f0a102913a5d89bcef32d23ddd9456e8d758e4071e94297bf18ac818d4c3c91"},"schema_version":"1.0","source":{"id":"1001.4986","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.4986","created_at":"2026-05-18T01:09:24Z"},{"alias_kind":"arxiv_version","alias_value":"1001.4986v1","created_at":"2026-05-18T01:09:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.4986","created_at":"2026-05-18T01:09:24Z"},{"alias_kind":"pith_short_12","alias_value":"27Z6EK3WGBRB","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"27Z6EK3WGBRBFAA5","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"27Z6EK3W","created_at":"2026-05-18T12:26:03Z"}],"graph_snapshots":[{"event_id":"sha256:415cbd14be4176fbba4a54fd97bbb2c86c29bcd5f2230c1c85b27181bb3887d4","target":"graph","created_at":"2026-05-18T01:09:24Z","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 new type of hemispherical electron energy analyzer that permits angle and spin resolved photoelectron spectroscopy has been developed. The analyzer permits standard angle resolved spectra to be recorded with a two-dimensional detector in parallel with spin detection using a mini-Mott polarimeter. General design considerations as well as technical solutions are discussed and test results from the Au(111) surface state are presented.","authors_text":"A. Hahlin, B. Wannberg, J. {\\AA}hlund, M. H. Berntsen, M. Leandersson, M. M{\\aa}nsson, O. Tjernberg, P. Palmgren","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2010-01-27T16:56:12Z","title":"A spin- and angle-resolving photoelectron spectrometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.4986","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":"sha256:783d2b3905154739fd10e54af7d84378904d7c6134648212b24c3202c75dc6fb","target":"record","created_at":"2026-05-18T01:09:24Z","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":"f00a4014e3aa4e20cc1bdfefd2b0f6858877e3777b08b3abacf4f00933adecdb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2010-01-27T16:56:12Z","title_canon_sha256":"7f0a102913a5d89bcef32d23ddd9456e8d758e4071e94297bf18ac818d4c3c91"},"schema_version":"1.0","source":{"id":"1001.4986","kind":"arxiv","version":1}},"canonical_sha256":"d7f3e22b76306212801d356227d5a45aef787989dee2b1946b3bef81b604af3d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d7f3e22b76306212801d356227d5a45aef787989dee2b1946b3bef81b604af3d","first_computed_at":"2026-05-18T01:09:24.151103Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:24.151103Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l7FZ3Xa8eD3NJUkp7gE5A9f9TeYVE9LS6hYPly3lE2BiiTn+5td4FWnEf3J2/K5xIWdK9ILdhQOVmBm4EcpACg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:24.151743Z","signed_message":"canonical_sha256_bytes"},"source_id":"1001.4986","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:783d2b3905154739fd10e54af7d84378904d7c6134648212b24c3202c75dc6fb","sha256:415cbd14be4176fbba4a54fd97bbb2c86c29bcd5f2230c1c85b27181bb3887d4"],"state_sha256":"0463d93dcaa0931b1ce0352e491b3656afd98daf21b8ed759ae154feeb023e14"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Mi4exCklwHbUDz4lAjPFI1Ovukz95mFG2dCpsy/awb6Hwtfmw47vKGKLIdVYJejybUJE/+pLgFt4Rlq/vgJsBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T01:39:14.875698Z","bundle_sha256":"3eb1caff011d57823c3e6c42062efeef5cd304910402c061895efc64dfdce253"}}