{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:FJKSLS63EETEYS5LIWZJJ7ZJOV","short_pith_number":"pith:FJKSLS63","canonical_record":{"source":{"id":"1805.04043","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-10T16:18:52Z","cross_cats_sorted":[],"title_canon_sha256":"150f74e4e64eca1a699b3b42795c095739a454c2b3fddfdc3415d0548cedf4f8","abstract_canon_sha256":"783ee0f5897824f3ae9e763435629327d5789b4642c96827b9a838b68842c98a"},"schema_version":"1.0"},"canonical_sha256":"2a5525cbdb21264c4bab45b294ff29756b0d68ad1b934aff71350553b9d70a54","source":{"kind":"arxiv","id":"1805.04043","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.04043","created_at":"2026-05-18T00:00:55Z"},{"alias_kind":"arxiv_version","alias_value":"1805.04043v1","created_at":"2026-05-18T00:00:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.04043","created_at":"2026-05-18T00:00:55Z"},{"alias_kind":"pith_short_12","alias_value":"FJKSLS63EETE","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"FJKSLS63EETEYS5L","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"FJKSLS63","created_at":"2026-05-18T12:32:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:FJKSLS63EETEYS5LIWZJJ7ZJOV","target":"record","payload":{"canonical_record":{"source":{"id":"1805.04043","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-10T16:18:52Z","cross_cats_sorted":[],"title_canon_sha256":"150f74e4e64eca1a699b3b42795c095739a454c2b3fddfdc3415d0548cedf4f8","abstract_canon_sha256":"783ee0f5897824f3ae9e763435629327d5789b4642c96827b9a838b68842c98a"},"schema_version":"1.0"},"canonical_sha256":"2a5525cbdb21264c4bab45b294ff29756b0d68ad1b934aff71350553b9d70a54","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:55.986778Z","signature_b64":"GPKiur59yXD2+7mh/yT1ureuhYxV4cYZmlCRDggMN2u16mZCrNdCrdAGWIVJFIx7UgF4aGMEAI+aA9VnLqWgCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2a5525cbdb21264c4bab45b294ff29756b0d68ad1b934aff71350553b9d70a54","last_reissued_at":"2026-05-18T00:00:55.986347Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:55.986347Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.04043","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":"2026-05-18T00:00:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bP8K5THonmM/oi/+BEJrFfZA5oaxrKkpvOs8k1LWyc8KbSuYDrGMDkEC1IhPQw3FUJy5+TKfs1oR1Q+ZN7DkBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T16:52:03.314240Z"},"content_sha256":"1de4890b5dcffe29544aa813881c25ee9ed1432fea5fa9e80bde2134dcd50bcc","schema_version":"1.0","event_id":"sha256:1de4890b5dcffe29544aa813881c25ee9ed1432fea5fa9e80bde2134dcd50bcc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:FJKSLS63EETEYS5LIWZJJ7ZJOV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"THz Transient Photoconductivity of the III-V Dilute Nitride GaPAsN","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"(2) City University of Hong Kong, (3) University of California Berkeley, (4) University of California San Diego, (5) Lawrence Berkeley National Laboratory), C. W. Tu (4), E. M. Weiss (1), J. N. Heyman (1), J. R. Rollag (1), K. M. Yu (2), O. D. Dubon (3), W. Walukiewicz (5) ((1) Macalester College, Y. J. Kuang (4)","submitted_at":"2018-05-10T16:18:52Z","abstract_excerpt":"THz Time-Resolved Photoconductivity is used to probe carrier dynamics in the dilute III-V nitride GaP0.49As0.47N0.036. In these measurements a femtosecond optical pump-pulse excites electron-hole pairs, and a delayed THz pulse measures the change in conductivity. We find the photoconductivity is dominated by localized carriers. The decay of photoconductivity after excitation is consistent with bimolecular electron-hole recombination with recombination constant r = 3.2E-8 +/-0.8E-8 cm3/s. We discuss the implications for applications in solar energy."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.04043","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":"2026-05-18T00:00:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hYjDh/3Jcp/PTGNTnFtgbgCXFvuXUtw94xWXCKx5mIaAYyTqyE/yh5xPD3s7TfiFZgyr2V7RHlgOyfPL8LTlCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T16:52:03.315032Z"},"content_sha256":"41f443a57aca99b3055d4054506560cbf151257ef8070ab7346d38e59204bec2","schema_version":"1.0","event_id":"sha256:41f443a57aca99b3055d4054506560cbf151257ef8070ab7346d38e59204bec2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FJKSLS63EETEYS5LIWZJJ7ZJOV/bundle.json","state_url":"https://pith.science/pith/FJKSLS63EETEYS5LIWZJJ7ZJOV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FJKSLS63EETEYS5LIWZJJ7ZJOV/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":"2026-05-30T16:52:03Z","links":{"resolver":"https://pith.science/pith/FJKSLS63EETEYS5LIWZJJ7ZJOV","bundle":"https://pith.science/pith/FJKSLS63EETEYS5LIWZJJ7ZJOV/bundle.json","state":"https://pith.science/pith/FJKSLS63EETEYS5LIWZJJ7ZJOV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FJKSLS63EETEYS5LIWZJJ7ZJOV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:FJKSLS63EETEYS5LIWZJJ7ZJOV","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":"783ee0f5897824f3ae9e763435629327d5789b4642c96827b9a838b68842c98a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-10T16:18:52Z","title_canon_sha256":"150f74e4e64eca1a699b3b42795c095739a454c2b3fddfdc3415d0548cedf4f8"},"schema_version":"1.0","source":{"id":"1805.04043","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.04043","created_at":"2026-05-18T00:00:55Z"},{"alias_kind":"arxiv_version","alias_value":"1805.04043v1","created_at":"2026-05-18T00:00:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.04043","created_at":"2026-05-18T00:00:55Z"},{"alias_kind":"pith_short_12","alias_value":"FJKSLS63EETE","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"FJKSLS63EETEYS5L","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"FJKSLS63","created_at":"2026-05-18T12:32:22Z"}],"graph_snapshots":[{"event_id":"sha256:41f443a57aca99b3055d4054506560cbf151257ef8070ab7346d38e59204bec2","target":"graph","created_at":"2026-05-18T00:00:55Z","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":"THz Time-Resolved Photoconductivity is used to probe carrier dynamics in the dilute III-V nitride GaP0.49As0.47N0.036. In these measurements a femtosecond optical pump-pulse excites electron-hole pairs, and a delayed THz pulse measures the change in conductivity. We find the photoconductivity is dominated by localized carriers. The decay of photoconductivity after excitation is consistent with bimolecular electron-hole recombination with recombination constant r = 3.2E-8 +/-0.8E-8 cm3/s. We discuss the implications for applications in solar energy.","authors_text":"(2) City University of Hong Kong, (3) University of California Berkeley, (4) University of California San Diego, (5) Lawrence Berkeley National Laboratory), C. W. Tu (4), E. M. Weiss (1), J. N. Heyman (1), J. R. Rollag (1), K. M. Yu (2), O. D. Dubon (3), W. Walukiewicz (5) ((1) Macalester College, Y. J. Kuang (4)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-10T16:18:52Z","title":"THz Transient Photoconductivity of the III-V Dilute Nitride GaPAsN"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.04043","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":"sha256:1de4890b5dcffe29544aa813881c25ee9ed1432fea5fa9e80bde2134dcd50bcc","target":"record","created_at":"2026-05-18T00:00:55Z","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":"783ee0f5897824f3ae9e763435629327d5789b4642c96827b9a838b68842c98a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-10T16:18:52Z","title_canon_sha256":"150f74e4e64eca1a699b3b42795c095739a454c2b3fddfdc3415d0548cedf4f8"},"schema_version":"1.0","source":{"id":"1805.04043","kind":"arxiv","version":1}},"canonical_sha256":"2a5525cbdb21264c4bab45b294ff29756b0d68ad1b934aff71350553b9d70a54","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2a5525cbdb21264c4bab45b294ff29756b0d68ad1b934aff71350553b9d70a54","first_computed_at":"2026-05-18T00:00:55.986347Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:55.986347Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GPKiur59yXD2+7mh/yT1ureuhYxV4cYZmlCRDggMN2u16mZCrNdCrdAGWIVJFIx7UgF4aGMEAI+aA9VnLqWgCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:55.986778Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.04043","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1de4890b5dcffe29544aa813881c25ee9ed1432fea5fa9e80bde2134dcd50bcc","sha256:41f443a57aca99b3055d4054506560cbf151257ef8070ab7346d38e59204bec2"],"state_sha256":"5dfc735fa6292a618f09006863ebfcccc1c0db6372d51388d42ba3f8d1025316"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tLoIS3AtzUvZTdKfy3DX8MiAmgHbdatuaStoyVmM9Wa87AYBYdsiIdOk3/byzL7/NV+J1o70FKL+HR98+IfFDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T16:52:03.318303Z","bundle_sha256":"a72a8479d85c5b111b39efa53b7d67b67e89fe8c6da79ddfdd0ecc0254dc14fa"}}