{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:4GOXDXQNHGYHXKR3RWWBWOY3DO","short_pith_number":"pith:4GOXDXQN","canonical_record":{"source":{"id":"cond-mat/0211182","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.soft","submitted_at":"2002-11-10T00:40:32Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"0aab0c6af07b567c860193a06faa0bacdb01408866eefde6235f71569b40ba4d","abstract_canon_sha256":"334012a64710baad7b17e05c57de3db4a221ef0145454aff8d31e3e60e9b402b"},"schema_version":"1.0"},"canonical_sha256":"e19d71de0d39b07baa3b8dac1b3b1b1b89bb06020d298cc384685c7e2ab0ec43","source":{"kind":"arxiv","id":"cond-mat/0211182","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0211182","created_at":"2026-05-18T01:40:02Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0211182v1","created_at":"2026-05-18T01:40:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0211182","created_at":"2026-05-18T01:40:02Z"},{"alias_kind":"pith_short_12","alias_value":"4GOXDXQNHGYH","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"4GOXDXQNHGYHXKR3","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"4GOXDXQN","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:4GOXDXQNHGYHXKR3RWWBWOY3DO","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0211182","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.soft","submitted_at":"2002-11-10T00:40:32Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"0aab0c6af07b567c860193a06faa0bacdb01408866eefde6235f71569b40ba4d","abstract_canon_sha256":"334012a64710baad7b17e05c57de3db4a221ef0145454aff8d31e3e60e9b402b"},"schema_version":"1.0"},"canonical_sha256":"e19d71de0d39b07baa3b8dac1b3b1b1b89bb06020d298cc384685c7e2ab0ec43","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:02.507250Z","signature_b64":"dPdDcXJt37xr0H/kPhoQJwCSKfczJxZN4S3kBSRCZSt2Ao1EwHfqIVC8bc1Po4tM+vKBPgofCqjlDdmfNgyfDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e19d71de0d39b07baa3b8dac1b3b1b1b89bb06020d298cc384685c7e2ab0ec43","last_reissued_at":"2026-05-18T01:40:02.506649Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:02.506649Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0211182","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":"2026-05-18T01:40:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CEwKqYbCiwJr4IjDvpeKG79KNb1rWdz+TvTM6W/X7m4aAw8SQCY5GMwdfb8A7n03pFkoDCroI0RbBlhyRDy8DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T03:10:36.794021Z"},"content_sha256":"cc80421204b94bdd7ec93f83c14023ef32513247fb34f764c2f09c63113377f4","schema_version":"1.0","event_id":"sha256:cc80421204b94bdd7ec93f83c14023ef32513247fb34f764c2f09c63113377f4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:4GOXDXQNHGYHXKR3RWWBWOY3DO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Narrow Pulse Approximation and long length scale determination in xenon gas diffusion NMR studies of model porous media","license":"","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.soft","authors_text":"D. G. Cory, M. D. Hurlimann, P. N. Sen, R. L. Walsworth, R. W. Mair, S. Patz","submitted_at":"2002-11-10T00:40:32Z","abstract_excerpt":"We report a systematic study of xenon gas diffusion NMR in simple model porous media: random packs of mono-sized glass beads, and focus on three specific areas peculiar to gas-phase diffusion. These topics are: (i) diffusion of spins on the order of the pore dimensions during the application of the diffusion encoding gradient pulses in a PGSE experiment (breakdown of the 'narrow pulse approximation' and imperfect background gradient cancellation), (ii) the ability to derive long-length scale structural information, and (iii) effects of finite sample size. We find that the time-dependent diffus"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0211182","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":"2026-05-18T01:40:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7RQaIwvqO7Y8vTDnMd7/4bt4eUma4lshlVv8v7kBoSNFh1RBJCr5sVrkaFKrn7TpPjikXlDE6DjRn9TIr3mGBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T03:10:36.794385Z"},"content_sha256":"0e29cca49e67546a779905de1ab0bbae76f7f6f42e6bd878e8d47b2f2a1ec44d","schema_version":"1.0","event_id":"sha256:0e29cca49e67546a779905de1ab0bbae76f7f6f42e6bd878e8d47b2f2a1ec44d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4GOXDXQNHGYHXKR3RWWBWOY3DO/bundle.json","state_url":"https://pith.science/pith/4GOXDXQNHGYHXKR3RWWBWOY3DO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4GOXDXQNHGYHXKR3RWWBWOY3DO/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":"2026-06-02T03:10:36Z","links":{"resolver":"https://pith.science/pith/4GOXDXQNHGYHXKR3RWWBWOY3DO","bundle":"https://pith.science/pith/4GOXDXQNHGYHXKR3RWWBWOY3DO/bundle.json","state":"https://pith.science/pith/4GOXDXQNHGYHXKR3RWWBWOY3DO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4GOXDXQNHGYHXKR3RWWBWOY3DO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:4GOXDXQNHGYHXKR3RWWBWOY3DO","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":"334012a64710baad7b17e05c57de3db4a221ef0145454aff8d31e3e60e9b402b","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"","primary_cat":"cond-mat.soft","submitted_at":"2002-11-10T00:40:32Z","title_canon_sha256":"0aab0c6af07b567c860193a06faa0bacdb01408866eefde6235f71569b40ba4d"},"schema_version":"1.0","source":{"id":"cond-mat/0211182","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0211182","created_at":"2026-05-18T01:40:02Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0211182v1","created_at":"2026-05-18T01:40:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0211182","created_at":"2026-05-18T01:40:02Z"},{"alias_kind":"pith_short_12","alias_value":"4GOXDXQNHGYH","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"4GOXDXQNHGYHXKR3","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"4GOXDXQN","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:0e29cca49e67546a779905de1ab0bbae76f7f6f42e6bd878e8d47b2f2a1ec44d","target":"graph","created_at":"2026-05-18T01:40:02Z","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 a systematic study of xenon gas diffusion NMR in simple model porous media: random packs of mono-sized glass beads, and focus on three specific areas peculiar to gas-phase diffusion. These topics are: (i) diffusion of spins on the order of the pore dimensions during the application of the diffusion encoding gradient pulses in a PGSE experiment (breakdown of the 'narrow pulse approximation' and imperfect background gradient cancellation), (ii) the ability to derive long-length scale structural information, and (iii) effects of finite sample size. We find that the time-dependent diffus","authors_text":"D. G. Cory, M. D. Hurlimann, P. N. Sen, R. L. Walsworth, R. W. Mair, S. Patz","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"","primary_cat":"cond-mat.soft","submitted_at":"2002-11-10T00:40:32Z","title":"The Narrow Pulse Approximation and long length scale determination in xenon gas diffusion NMR studies of model porous media"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0211182","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:cc80421204b94bdd7ec93f83c14023ef32513247fb34f764c2f09c63113377f4","target":"record","created_at":"2026-05-18T01:40:02Z","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":"334012a64710baad7b17e05c57de3db4a221ef0145454aff8d31e3e60e9b402b","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"","primary_cat":"cond-mat.soft","submitted_at":"2002-11-10T00:40:32Z","title_canon_sha256":"0aab0c6af07b567c860193a06faa0bacdb01408866eefde6235f71569b40ba4d"},"schema_version":"1.0","source":{"id":"cond-mat/0211182","kind":"arxiv","version":1}},"canonical_sha256":"e19d71de0d39b07baa3b8dac1b3b1b1b89bb06020d298cc384685c7e2ab0ec43","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e19d71de0d39b07baa3b8dac1b3b1b1b89bb06020d298cc384685c7e2ab0ec43","first_computed_at":"2026-05-18T01:40:02.506649Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:02.506649Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dPdDcXJt37xr0H/kPhoQJwCSKfczJxZN4S3kBSRCZSt2Ao1EwHfqIVC8bc1Po4tM+vKBPgofCqjlDdmfNgyfDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:02.507250Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0211182","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cc80421204b94bdd7ec93f83c14023ef32513247fb34f764c2f09c63113377f4","sha256:0e29cca49e67546a779905de1ab0bbae76f7f6f42e6bd878e8d47b2f2a1ec44d"],"state_sha256":"0b78506b2336c4fb82fba524c94890b3d831c03169dd2806a188757905d8e27c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qI2duIG6iI2F4USXZV4B6+ThRrOkMXj9Zh91PU9AdEfM9mCHWayBWm7b90Q8nWD+VPhmlq61FU0053eTEHKaCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T03:10:36.796363Z","bundle_sha256":"712a82a6105c2a65b9629013e8d3dd5bc48a86ae7ebef07ee335a7b15a69a206"}}