{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:HAR44VWPM67WVYA7JHCDB4N2GI","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":"7dccd37fe2d234217e8f2d2ecf515a126309250216e86920beb97e6c54d2b613","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2009-12-11T20:44:40Z","title_canon_sha256":"1ab15fe738a6d760be5f534e1e6250776b7d526fde2dd592a4cc915aa64bbf64"},"schema_version":"1.0","source":{"id":"0912.2337","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.2337","created_at":"2026-05-18T02:33:56Z"},{"alias_kind":"arxiv_version","alias_value":"0912.2337v3","created_at":"2026-05-18T02:33:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.2337","created_at":"2026-05-18T02:33:56Z"},{"alias_kind":"pith_short_12","alias_value":"HAR44VWPM67W","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"HAR44VWPM67WVYA7","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"HAR44VWP","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:b39c9dca34d1932ef65c946f9da66f2875e909580fd7187a5893223c72e62793","target":"graph","created_at":"2026-05-18T02:33:56Z","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 report the testing of a charcoal-based Kr-83m source for use in calibrating a low background two-phase liquid xenon detector. Kr-83m atoms produced through the decay of Rb-83 are introduced into a xenon detector by flowing xenon gas past the Rb-83 source. 9.4 keV and 32.1 keV transitions from decaying 83Krm nuclei are detected through liquid xenon scintillation and ionization. The characteristics of the Kr-83m source are analyzed and shown to be appropriate for a low background liquid xenon detector. Introduction of Kr-83m allows for quick, periodic calibration of low background noble liqui","authors_text":"A. Manzur, D. N. McKinsey, L. W. Kastens, S. B. Cahn, S. Bedikian","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2009-12-11T20:44:40Z","title":"A 83Krm Source for Use in Low-background Liquid Xenon Time Projection Chambers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.2337","kind":"arxiv","version":3},"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":"sha256:4383e9f9210032708a5473468e54f871b0210073fc1ee195622e1ea097b2f563","target":"record","created_at":"2026-05-18T02:33:56Z","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":"7dccd37fe2d234217e8f2d2ecf515a126309250216e86920beb97e6c54d2b613","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2009-12-11T20:44:40Z","title_canon_sha256":"1ab15fe738a6d760be5f534e1e6250776b7d526fde2dd592a4cc915aa64bbf64"},"schema_version":"1.0","source":{"id":"0912.2337","kind":"arxiv","version":3}},"canonical_sha256":"3823ce56cf67bf6ae01f49c430f1ba323fb5b2f03055456122767d67d9428622","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3823ce56cf67bf6ae01f49c430f1ba323fb5b2f03055456122767d67d9428622","first_computed_at":"2026-05-18T02:33:56.782258Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:33:56.782258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ltWHZRDiGQn/RYbOhobE7AdovvFDS23lxAwND0mETuThjAngaXHfdCF6wrA7dq0BttfPuwjVOWhS7no9Rk/+Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:33:56.782699Z","signed_message":"canonical_sha256_bytes"},"source_id":"0912.2337","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4383e9f9210032708a5473468e54f871b0210073fc1ee195622e1ea097b2f563","sha256:b39c9dca34d1932ef65c946f9da66f2875e909580fd7187a5893223c72e62793"],"state_sha256":"4ab116c51c1dd7a873427a2ca8290bc468eb078778929591c812358e6d510bc4"}