{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:E7LGJOREGVMWDQEMORD5WQEP5A","short_pith_number":"pith:E7LGJORE","canonical_record":{"source":{"id":"1407.1175","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-04T10:17:12Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"0048f8e7259897cc4ead0d72ce71a5800d23c762a48731da274b944b242584cd","abstract_canon_sha256":"20fa44287e33cbe1eb74ad86811c6dccbcf25c61d89b982d80a8f33b42c0d09e"},"schema_version":"1.0"},"canonical_sha256":"27d664ba24355961c08c7447db408fe829222f41caa19a6fd6df7cd847a17d47","source":{"kind":"arxiv","id":"1407.1175","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.1175","created_at":"2026-05-18T01:42:41Z"},{"alias_kind":"arxiv_version","alias_value":"1407.1175v1","created_at":"2026-05-18T01:42:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.1175","created_at":"2026-05-18T01:42:41Z"},{"alias_kind":"pith_short_12","alias_value":"E7LGJOREGVMW","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_16","alias_value":"E7LGJOREGVMWDQEM","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_8","alias_value":"E7LGJORE","created_at":"2026-05-18T12:28:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:E7LGJOREGVMWDQEMORD5WQEP5A","target":"record","payload":{"canonical_record":{"source":{"id":"1407.1175","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-04T10:17:12Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"0048f8e7259897cc4ead0d72ce71a5800d23c762a48731da274b944b242584cd","abstract_canon_sha256":"20fa44287e33cbe1eb74ad86811c6dccbcf25c61d89b982d80a8f33b42c0d09e"},"schema_version":"1.0"},"canonical_sha256":"27d664ba24355961c08c7447db408fe829222f41caa19a6fd6df7cd847a17d47","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:41.972450Z","signature_b64":"zH3/7dU09ooFnMVPNO3Wydtq2Wfa3SEDiiUnyOmHDg5jcIgnP9qP3A02TcHpZBfWPuGbALV4kmr9o2168BIgBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"27d664ba24355961c08c7447db408fe829222f41caa19a6fd6df7cd847a17d47","last_reissued_at":"2026-05-18T01:42:41.971737Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:41.971737Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.1175","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":"2026-05-18T01:42:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pkndo9P7kJBrvhxzUIdE/Fyo2Qdc9F1csOfusy0iXCaMztHEgxXl/AH78tQvUoFs3v3A8ac3eGSl8tsISqXfCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T20:14:58.047167Z"},"content_sha256":"eae6a8b684e1f751fc975f3f33101ca68f57923033a23dd1e2288ec493db9a73","schema_version":"1.0","event_id":"sha256:eae6a8b684e1f751fc975f3f33101ca68f57923033a23dd1e2288ec493db9a73"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:E7LGJOREGVMWDQEMORD5WQEP5A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Some optical properties of graphite from IR to millimetric wavelengths","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"astro-ph.GA","authors_text":"Renaud Papoular, Robert J. Papoular","submitted_at":"2014-07-04T10:17:12Z","abstract_excerpt":"Far infrared(FIR) data on the optical properties of graphite are presently lacking. An important step towards filling this gap was taken by Kuzmenko et al. (2008) who measured, on HOPG (Highly Oriented Pyrolitic Graphite) at normal incidence and from 10 to 300 K, the in-plane dielectric functions from 0.3 to 200 mum, and the reflectance between 0.3 and about 300 mum. We show here how, using recent developments of the electron theory of graphene, extended to graphite, it is possible to properly extrapolate the data farther even than 1000 mum, in effect all the way to Direct Current. The plasma "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.1175","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":"2026-05-18T01:42:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oPEgQl+dm9HPQ/2tf7yQNnPuoFyiGVmqL2IDKK2ggNHj7Hg7yT3FtCsrKVGXQ7Kn4f41mRGV3ppuLhHSQTUMBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T20:14:58.047517Z"},"content_sha256":"27176806b1eea7dfea1cd099de675490fda5a544cb61e9ec0a5108c80ac8399e","schema_version":"1.0","event_id":"sha256:27176806b1eea7dfea1cd099de675490fda5a544cb61e9ec0a5108c80ac8399e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E7LGJOREGVMWDQEMORD5WQEP5A/bundle.json","state_url":"https://pith.science/pith/E7LGJOREGVMWDQEMORD5WQEP5A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E7LGJOREGVMWDQEMORD5WQEP5A/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":"2026-06-29T20:14:58Z","links":{"resolver":"https://pith.science/pith/E7LGJOREGVMWDQEMORD5WQEP5A","bundle":"https://pith.science/pith/E7LGJOREGVMWDQEMORD5WQEP5A/bundle.json","state":"https://pith.science/pith/E7LGJOREGVMWDQEMORD5WQEP5A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E7LGJOREGVMWDQEMORD5WQEP5A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:E7LGJOREGVMWDQEMORD5WQEP5A","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":"20fa44287e33cbe1eb74ad86811c6dccbcf25c61d89b982d80a8f33b42c0d09e","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-04T10:17:12Z","title_canon_sha256":"0048f8e7259897cc4ead0d72ce71a5800d23c762a48731da274b944b242584cd"},"schema_version":"1.0","source":{"id":"1407.1175","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.1175","created_at":"2026-05-18T01:42:41Z"},{"alias_kind":"arxiv_version","alias_value":"1407.1175v1","created_at":"2026-05-18T01:42:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.1175","created_at":"2026-05-18T01:42:41Z"},{"alias_kind":"pith_short_12","alias_value":"E7LGJOREGVMW","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_16","alias_value":"E7LGJOREGVMWDQEM","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_8","alias_value":"E7LGJORE","created_at":"2026-05-18T12:28:25Z"}],"graph_snapshots":[{"event_id":"sha256:27176806b1eea7dfea1cd099de675490fda5a544cb61e9ec0a5108c80ac8399e","target":"graph","created_at":"2026-05-18T01:42:41Z","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":"Far infrared(FIR) data on the optical properties of graphite are presently lacking. An important step towards filling this gap was taken by Kuzmenko et al. (2008) who measured, on HOPG (Highly Oriented Pyrolitic Graphite) at normal incidence and from 10 to 300 K, the in-plane dielectric functions from 0.3 to 200 mum, and the reflectance between 0.3 and about 300 mum. We show here how, using recent developments of the electron theory of graphene, extended to graphite, it is possible to properly extrapolate the data farther even than 1000 mum, in effect all the way to Direct Current. The plasma ","authors_text":"Renaud Papoular, Robert J. Papoular","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-04T10:17:12Z","title":"Some optical properties of graphite from IR to millimetric wavelengths"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.1175","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:eae6a8b684e1f751fc975f3f33101ca68f57923033a23dd1e2288ec493db9a73","target":"record","created_at":"2026-05-18T01:42:41Z","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":"20fa44287e33cbe1eb74ad86811c6dccbcf25c61d89b982d80a8f33b42c0d09e","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-04T10:17:12Z","title_canon_sha256":"0048f8e7259897cc4ead0d72ce71a5800d23c762a48731da274b944b242584cd"},"schema_version":"1.0","source":{"id":"1407.1175","kind":"arxiv","version":1}},"canonical_sha256":"27d664ba24355961c08c7447db408fe829222f41caa19a6fd6df7cd847a17d47","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"27d664ba24355961c08c7447db408fe829222f41caa19a6fd6df7cd847a17d47","first_computed_at":"2026-05-18T01:42:41.971737Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:41.971737Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zH3/7dU09ooFnMVPNO3Wydtq2Wfa3SEDiiUnyOmHDg5jcIgnP9qP3A02TcHpZBfWPuGbALV4kmr9o2168BIgBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:41.972450Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.1175","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eae6a8b684e1f751fc975f3f33101ca68f57923033a23dd1e2288ec493db9a73","sha256:27176806b1eea7dfea1cd099de675490fda5a544cb61e9ec0a5108c80ac8399e"],"state_sha256":"d15bd853ad113ae0ba01b9f448164ae935f6e57d937018a691facfb51511269f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BDDZfWKB70Bw5PyZ2TRXBc2l+dvr4Rw1p7b5EENEhOQKkbtNzXpmCF7rAjpQ26H7r1nT97yDmXNxIfQ4z5IWAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T20:14:58.049343Z","bundle_sha256":"4de425c04965c994f0dd4d4bde10f9893ed6482ec7531704ccfd255e03b68d33"}}