{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:5MGHPGPNTA4WFN4PKX4SCSKORR","short_pith_number":"pith:5MGHPGPN","canonical_record":{"source":{"id":"2303.13927","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2023-03-24T11:30:28Z","cross_cats_sorted":[],"title_canon_sha256":"ec02f3d5d143ac26a4687d480d0e4251fdb0102920cd765de23371c01330bf2b","abstract_canon_sha256":"19e0a2234f8139de6db8793e7503a3459d6790d5e451105fe02e1879eed85170"},"schema_version":"1.0"},"canonical_sha256":"eb0c7799ed983962b78f55f921494e8c7f7348e8b2b2eaf92700a7751ff52ccd","source":{"kind":"arxiv","id":"2303.13927","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.13927","created_at":"2026-07-05T06:20:27Z"},{"alias_kind":"arxiv_version","alias_value":"2303.13927v1","created_at":"2026-07-05T06:20:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.13927","created_at":"2026-07-05T06:20:27Z"},{"alias_kind":"pith_short_12","alias_value":"5MGHPGPNTA4W","created_at":"2026-07-05T06:20:27Z"},{"alias_kind":"pith_short_16","alias_value":"5MGHPGPNTA4WFN4P","created_at":"2026-07-05T06:20:27Z"},{"alias_kind":"pith_short_8","alias_value":"5MGHPGPN","created_at":"2026-07-05T06:20:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:5MGHPGPNTA4WFN4PKX4SCSKORR","target":"record","payload":{"canonical_record":{"source":{"id":"2303.13927","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2023-03-24T11:30:28Z","cross_cats_sorted":[],"title_canon_sha256":"ec02f3d5d143ac26a4687d480d0e4251fdb0102920cd765de23371c01330bf2b","abstract_canon_sha256":"19e0a2234f8139de6db8793e7503a3459d6790d5e451105fe02e1879eed85170"},"schema_version":"1.0"},"canonical_sha256":"eb0c7799ed983962b78f55f921494e8c7f7348e8b2b2eaf92700a7751ff52ccd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:20:27.559093Z","signature_b64":"bnNK/DAt4HqPM+yEI4LZAslpOaqNukSkOJmIe9bbWFGK3emyI7giZr9thAfbbj7wz0dgWeY/cwxPoMwDaCq6Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eb0c7799ed983962b78f55f921494e8c7f7348e8b2b2eaf92700a7751ff52ccd","last_reissued_at":"2026-07-05T06:20:27.558666Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:20:27.558666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2303.13927","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":"2026-07-05T06:20:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EtxPts9GbxbPkEDvyfIFYV+BZwXEYyN7Jdu4Bsm1mLs2eBTRVis8hjQiV1FOFjQLw2Omm1QXdt867bbDWPPpDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T19:09:52.545104Z"},"content_sha256":"dd8f14e0f0ff87384c679719787b861f5990cd4a871a014681e11f2f2b85fbf1","schema_version":"1.0","event_id":"sha256:dd8f14e0f0ff87384c679719787b861f5990cd4a871a014681e11f2f2b85fbf1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:5MGHPGPNTA4WFN4PKX4SCSKORR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Reduction of helium permeation in microfabricated cells using aluminosilicate glass substrates and Al$_2$O$_3$ coatings","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"A. Mursa, C. Carl\\'e, M. Abdel Hafiz, N. Passilly, P. Abb\\'e, P. Karvinen, R. Boudot, R. Chutani, R. Vicarini, S. Bargiel, S. Keshavarzi, S. Queste, V. Maurice","submitted_at":"2023-03-24T11:30:28Z","abstract_excerpt":"The stability and accuracy of atomic devices can be degraded by the evolution of their cell inner atmosphere. Hence, the undesired entrance or leakage of background or buffer gas, respectively, that can permeate through the cell walls, should be slowed down. In this work, we investigate helium permeation in microfabricated alkali vapor cells filled with He and whose windows are made of borosilicate glass (BSG) or aluminosilicate glass (ASG). The permeation is then derived from routine measurements of the pressure-shifted hyperfine transition frequency of an atomic clock. We first confirm that "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.13927","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2303.13927/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T06:20:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+Ajz5tkVPevT6Vo3mn3B7VydEUKy6+HG6qPSV19Y3tnhHSXNwHkbgJr+9eomE6SHmxFd6ROoCUefMUNocAjhAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T19:09:52.545640Z"},"content_sha256":"64827bb81cf7a000ecab6ad2f9d9ef24d4a3e753b2ca1858ba229af2f6187a53","schema_version":"1.0","event_id":"sha256:64827bb81cf7a000ecab6ad2f9d9ef24d4a3e753b2ca1858ba229af2f6187a53"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5MGHPGPNTA4WFN4PKX4SCSKORR/bundle.json","state_url":"https://pith.science/pith/5MGHPGPNTA4WFN4PKX4SCSKORR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5MGHPGPNTA4WFN4PKX4SCSKORR/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":"2026-08-06T19:09:52Z","links":{"resolver":"https://pith.science/pith/5MGHPGPNTA4WFN4PKX4SCSKORR","bundle":"https://pith.science/pith/5MGHPGPNTA4WFN4PKX4SCSKORR/bundle.json","state":"https://pith.science/pith/5MGHPGPNTA4WFN4PKX4SCSKORR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5MGHPGPNTA4WFN4PKX4SCSKORR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:5MGHPGPNTA4WFN4PKX4SCSKORR","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":"19e0a2234f8139de6db8793e7503a3459d6790d5e451105fe02e1879eed85170","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2023-03-24T11:30:28Z","title_canon_sha256":"ec02f3d5d143ac26a4687d480d0e4251fdb0102920cd765de23371c01330bf2b"},"schema_version":"1.0","source":{"id":"2303.13927","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.13927","created_at":"2026-07-05T06:20:27Z"},{"alias_kind":"arxiv_version","alias_value":"2303.13927v1","created_at":"2026-07-05T06:20:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.13927","created_at":"2026-07-05T06:20:27Z"},{"alias_kind":"pith_short_12","alias_value":"5MGHPGPNTA4W","created_at":"2026-07-05T06:20:27Z"},{"alias_kind":"pith_short_16","alias_value":"5MGHPGPNTA4WFN4P","created_at":"2026-07-05T06:20:27Z"},{"alias_kind":"pith_short_8","alias_value":"5MGHPGPN","created_at":"2026-07-05T06:20:27Z"}],"graph_snapshots":[{"event_id":"sha256:64827bb81cf7a000ecab6ad2f9d9ef24d4a3e753b2ca1858ba229af2f6187a53","target":"graph","created_at":"2026-07-05T06:20:27Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2303.13927/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The stability and accuracy of atomic devices can be degraded by the evolution of their cell inner atmosphere. Hence, the undesired entrance or leakage of background or buffer gas, respectively, that can permeate through the cell walls, should be slowed down. In this work, we investigate helium permeation in microfabricated alkali vapor cells filled with He and whose windows are made of borosilicate glass (BSG) or aluminosilicate glass (ASG). The permeation is then derived from routine measurements of the pressure-shifted hyperfine transition frequency of an atomic clock. We first confirm that ","authors_text":"A. Mursa, C. Carl\\'e, M. Abdel Hafiz, N. Passilly, P. Abb\\'e, P. Karvinen, R. Boudot, R. Chutani, R. Vicarini, S. Bargiel, S. Keshavarzi, S. Queste, V. Maurice","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2023-03-24T11:30:28Z","title":"Reduction of helium permeation in microfabricated cells using aluminosilicate glass substrates and Al$_2$O$_3$ coatings"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.13927","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:dd8f14e0f0ff87384c679719787b861f5990cd4a871a014681e11f2f2b85fbf1","target":"record","created_at":"2026-07-05T06:20:27Z","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":"19e0a2234f8139de6db8793e7503a3459d6790d5e451105fe02e1879eed85170","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2023-03-24T11:30:28Z","title_canon_sha256":"ec02f3d5d143ac26a4687d480d0e4251fdb0102920cd765de23371c01330bf2b"},"schema_version":"1.0","source":{"id":"2303.13927","kind":"arxiv","version":1}},"canonical_sha256":"eb0c7799ed983962b78f55f921494e8c7f7348e8b2b2eaf92700a7751ff52ccd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eb0c7799ed983962b78f55f921494e8c7f7348e8b2b2eaf92700a7751ff52ccd","first_computed_at":"2026-07-05T06:20:27.558666Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:20:27.558666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bnNK/DAt4HqPM+yEI4LZAslpOaqNukSkOJmIe9bbWFGK3emyI7giZr9thAfbbj7wz0dgWeY/cwxPoMwDaCq6Ag==","signature_status":"signed_v1","signed_at":"2026-07-05T06:20:27.559093Z","signed_message":"canonical_sha256_bytes"},"source_id":"2303.13927","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd8f14e0f0ff87384c679719787b861f5990cd4a871a014681e11f2f2b85fbf1","sha256:64827bb81cf7a000ecab6ad2f9d9ef24d4a3e753b2ca1858ba229af2f6187a53"],"state_sha256":"9d3de000f6a668853e65bc1c64e63c1f61c0ea0f918ebeec1a9eba44155685ab"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G9+XsE/7DNYi+486ZtcIO4nW7Xt3Zh/QPgbIIcNgyy/xCnaHpud+rPUBLebDu8FbFpEGzKZhJLBquuJ/OkiiAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T19:09:52.549602Z","bundle_sha256":"445b2def7fab85fe9d08dbf8bce679b90303ebed66eebb7ef285cf07bcb82587"}}