{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:B2KDNWVSWROXPZWMJRHATERUPJ","short_pith_number":"pith:B2KDNWVS","canonical_record":{"source":{"id":"1402.3207","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-02-13T16:36:12Z","cross_cats_sorted":["astro-ph.CO","physics.chem-ph"],"title_canon_sha256":"5c5f9388f58ec222773fb6a74d1198f6a00c985ecdfea1d45269c68c4f0c70f7","abstract_canon_sha256":"f9d66e464803b712f6cd12e39085e9dd0154170ff597124b272f5b0981be7aec"},"schema_version":"1.0"},"canonical_sha256":"0e9436dab2b45d77e6cc4c4e0992347a718d8034490ea462ccb7491bfd6e6cd1","source":{"kind":"arxiv","id":"1402.3207","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.3207","created_at":"2026-05-18T02:59:07Z"},{"alias_kind":"arxiv_version","alias_value":"1402.3207v1","created_at":"2026-05-18T02:59:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.3207","created_at":"2026-05-18T02:59:07Z"},{"alias_kind":"pith_short_12","alias_value":"B2KDNWVSWROX","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"B2KDNWVSWROXPZWM","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"B2KDNWVS","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:B2KDNWVSWROXPZWMJRHATERUPJ","target":"record","payload":{"canonical_record":{"source":{"id":"1402.3207","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-02-13T16:36:12Z","cross_cats_sorted":["astro-ph.CO","physics.chem-ph"],"title_canon_sha256":"5c5f9388f58ec222773fb6a74d1198f6a00c985ecdfea1d45269c68c4f0c70f7","abstract_canon_sha256":"f9d66e464803b712f6cd12e39085e9dd0154170ff597124b272f5b0981be7aec"},"schema_version":"1.0"},"canonical_sha256":"0e9436dab2b45d77e6cc4c4e0992347a718d8034490ea462ccb7491bfd6e6cd1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:59:07.241810Z","signature_b64":"1A2zDOOCpNlZLk0L/LQv3jVP93NU4Wqv/xf1yeP2roGiOQK4UBdJHPOGAwd+zsJApjYZt/RiPzomA70xLCDPCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0e9436dab2b45d77e6cc4c4e0992347a718d8034490ea462ccb7491bfd6e6cd1","last_reissued_at":"2026-05-18T02:59:07.240947Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:59:07.240947Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1402.3207","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":"2026-05-18T02:59:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wu4Iqg2w+7xrxRsIi4hOceRGTHUKVOZu04mk5uC5FX29kuEGIyOcxgddHy4w2qOA53lK8LozjgM2D9AC+GM9Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T01:30:13.588632Z"},"content_sha256":"25a97febee8865900b16e88a9ed9d3285a82743b602432e0b664bf0677dd0503","schema_version":"1.0","event_id":"sha256:25a97febee8865900b16e88a9ed9d3285a82743b602432e0b664bf0677dd0503"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:B2KDNWVSWROXPZWMJRHATERUPJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum tunneling of oxygen atoms on very cold surfaces","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","physics.chem-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Moudens, E. Congiu, F. Dulieu, G. Manico, H. Chaabouni, M. Accolla, M. Minissale, S. Baouche, S. Cazaux, V. Pirronello","submitted_at":"2014-02-13T16:36:12Z","abstract_excerpt":"Any evolving system can change of state via thermal mechanisms (hopping a barrier) or via quantum tunneling. Most of the time, efficient classical mechanisms dominate at high temperatures. This is why an increase of the temperature can initiate the chemistry. We present here an experimental investigation of O-atom diffusion and reactivity on water ice. We explore the 6-25 K temperature range at sub-monolayer surface coverages. We derive the diffusion temperature law and observe the transition from quantum to classical diffusion. Despite of the high mass of O, quantum tunneling is efficient eve"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.3207","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":"2026-05-18T02:59:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4/krppkFBxKuwLLYRUT2aInu/6q+oIcN2GLCMMmwV/b/PlAeqC5KHOaMPIu2LVPna3qR5JNpNt3tBC+rn94JDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T01:30:13.589136Z"},"content_sha256":"2afb75a713bcdf1f823bd6a5f7b4b9e0e5b2395ecb37e5890e01eaa7bbe2aca8","schema_version":"1.0","event_id":"sha256:2afb75a713bcdf1f823bd6a5f7b4b9e0e5b2395ecb37e5890e01eaa7bbe2aca8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B2KDNWVSWROXPZWMJRHATERUPJ/bundle.json","state_url":"https://pith.science/pith/B2KDNWVSWROXPZWMJRHATERUPJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B2KDNWVSWROXPZWMJRHATERUPJ/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":"2026-05-31T01:30:13Z","links":{"resolver":"https://pith.science/pith/B2KDNWVSWROXPZWMJRHATERUPJ","bundle":"https://pith.science/pith/B2KDNWVSWROXPZWMJRHATERUPJ/bundle.json","state":"https://pith.science/pith/B2KDNWVSWROXPZWMJRHATERUPJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B2KDNWVSWROXPZWMJRHATERUPJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:B2KDNWVSWROXPZWMJRHATERUPJ","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":"f9d66e464803b712f6cd12e39085e9dd0154170ff597124b272f5b0981be7aec","cross_cats_sorted":["astro-ph.CO","physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-02-13T16:36:12Z","title_canon_sha256":"5c5f9388f58ec222773fb6a74d1198f6a00c985ecdfea1d45269c68c4f0c70f7"},"schema_version":"1.0","source":{"id":"1402.3207","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.3207","created_at":"2026-05-18T02:59:07Z"},{"alias_kind":"arxiv_version","alias_value":"1402.3207v1","created_at":"2026-05-18T02:59:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.3207","created_at":"2026-05-18T02:59:07Z"},{"alias_kind":"pith_short_12","alias_value":"B2KDNWVSWROX","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"B2KDNWVSWROXPZWM","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"B2KDNWVS","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:2afb75a713bcdf1f823bd6a5f7b4b9e0e5b2395ecb37e5890e01eaa7bbe2aca8","target":"graph","created_at":"2026-05-18T02:59:07Z","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":"Any evolving system can change of state via thermal mechanisms (hopping a barrier) or via quantum tunneling. Most of the time, efficient classical mechanisms dominate at high temperatures. This is why an increase of the temperature can initiate the chemistry. We present here an experimental investigation of O-atom diffusion and reactivity on water ice. We explore the 6-25 K temperature range at sub-monolayer surface coverages. We derive the diffusion temperature law and observe the transition from quantum to classical diffusion. Despite of the high mass of O, quantum tunneling is efficient eve","authors_text":"A. Moudens, E. Congiu, F. Dulieu, G. Manico, H. Chaabouni, M. Accolla, M. Minissale, S. Baouche, S. Cazaux, V. Pirronello","cross_cats":["astro-ph.CO","physics.chem-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-02-13T16:36:12Z","title":"Quantum tunneling of oxygen atoms on very cold surfaces"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.3207","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":"sha256:25a97febee8865900b16e88a9ed9d3285a82743b602432e0b664bf0677dd0503","target":"record","created_at":"2026-05-18T02:59:07Z","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":"f9d66e464803b712f6cd12e39085e9dd0154170ff597124b272f5b0981be7aec","cross_cats_sorted":["astro-ph.CO","physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-02-13T16:36:12Z","title_canon_sha256":"5c5f9388f58ec222773fb6a74d1198f6a00c985ecdfea1d45269c68c4f0c70f7"},"schema_version":"1.0","source":{"id":"1402.3207","kind":"arxiv","version":1}},"canonical_sha256":"0e9436dab2b45d77e6cc4c4e0992347a718d8034490ea462ccb7491bfd6e6cd1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0e9436dab2b45d77e6cc4c4e0992347a718d8034490ea462ccb7491bfd6e6cd1","first_computed_at":"2026-05-18T02:59:07.240947Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:59:07.240947Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1A2zDOOCpNlZLk0L/LQv3jVP93NU4Wqv/xf1yeP2roGiOQK4UBdJHPOGAwd+zsJApjYZt/RiPzomA70xLCDPCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:59:07.241810Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.3207","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:25a97febee8865900b16e88a9ed9d3285a82743b602432e0b664bf0677dd0503","sha256:2afb75a713bcdf1f823bd6a5f7b4b9e0e5b2395ecb37e5890e01eaa7bbe2aca8"],"state_sha256":"88c005631b105ee2a56ec18bcec6883f23f2e192c0bcf63a85aa853fb2381527"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TJfP/bRgLVzkf6zuOT2tWBDyCMcLQam3eS0vb5lTczm3WgSgvY6YXCG82nI14XYyj8X2/vo+v8Pf1pWM5g78Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T01:30:13.591899Z","bundle_sha256":"eb80fdaeba59f3c970bbeb24c9d34100384b73f16f2772aba665201921fc335f"}}