{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:O3ETA7B7DT2MY7NRX3KJMBOPXD","short_pith_number":"pith:O3ETA7B7","canonical_record":{"source":{"id":"physics/0308097","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.ins-det","submitted_at":"2003-08-27T10:42:16Z","cross_cats_sorted":[],"title_canon_sha256":"0cc107bf0adfcdf341f4ca1d4ebb063524f6a53348b00f0b7f5255938cd075cc","abstract_canon_sha256":"4d90f1f41fb1eb2c61c0abfe4e0871db3fe6a7dd5b351ab5325547d0dfa8afbd"},"schema_version":"1.0"},"canonical_sha256":"76c9307c3f1cf4cc7db1bed49605cfb8cbbd550685b2b31b83744a5b24177440","source":{"kind":"arxiv","id":"physics/0308097","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0308097","created_at":"2026-05-18T01:38:08Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0308097v1","created_at":"2026-05-18T01:38:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0308097","created_at":"2026-05-18T01:38:08Z"},{"alias_kind":"pith_short_12","alias_value":"O3ETA7B7DT2M","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"O3ETA7B7DT2MY7NR","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"O3ETA7B7","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:O3ETA7B7DT2MY7NRX3KJMBOPXD","target":"record","payload":{"canonical_record":{"source":{"id":"physics/0308097","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.ins-det","submitted_at":"2003-08-27T10:42:16Z","cross_cats_sorted":[],"title_canon_sha256":"0cc107bf0adfcdf341f4ca1d4ebb063524f6a53348b00f0b7f5255938cd075cc","abstract_canon_sha256":"4d90f1f41fb1eb2c61c0abfe4e0871db3fe6a7dd5b351ab5325547d0dfa8afbd"},"schema_version":"1.0"},"canonical_sha256":"76c9307c3f1cf4cc7db1bed49605cfb8cbbd550685b2b31b83744a5b24177440","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:38:08.728585Z","signature_b64":"SugmGeCZhP7uHXV9AwGLmdi7Q4Rw3ntaoIERkcbdF3EMlh0xoJqzZ4pu9tEaVD5i/85a/Pi/IJxEcHt2RPnIAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"76c9307c3f1cf4cc7db1bed49605cfb8cbbd550685b2b31b83744a5b24177440","last_reissued_at":"2026-05-18T01:38:08.727894Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:38:08.727894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"physics/0308097","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":"2026-05-18T01:38:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QcXRqUv4x97N1kTwaE9iaD9VgT2RRg4K9CwG80QU7dEyMUKvLVwmXUIxTS4BocvS/04HjBLnGAQGodwY9aJ6Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:06:54.446773Z"},"content_sha256":"8135c5dff8ba1b5a27402da0319dbeaa75228b9ec2c1cc02cf818aae1d94026d","schema_version":"1.0","event_id":"sha256:8135c5dff8ba1b5a27402da0319dbeaa75228b9ec2c1cc02cf818aae1d94026d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:O3ETA7B7DT2MY7NRX3KJMBOPXD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Performance of a micro-TPC for a time-resolved neutron PSD","license":"","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"Atsushi Takada, Atsushi Takeda, Hidetoshi Kubo, Kentaro Miuchi, Masaru Ueno, Reiko Orito, Toru Tanimori, Tsutomu Nagayoshi","submitted_at":"2003-08-27T10:42:16Z","abstract_excerpt":"We report on the performance of a micro-TPC with a micro pixel chamber($\\mu$-PIC) readout for a time-resolved neutron position-sensitive detector(PSD). Three-dimensional tracks and the Bragg curves of protons with energies of around 1 MeV were clearly detected by the micro-TPC. More than 95% of gamma-rays of 511 keV were found to be discriminated by simple analysis. Simulation studies showed that the total track length of proton and triton emitted from the $\\rm {}^{3}He$(n,p(573 keV))$\\rm {}^{3}H(191 keV)$ reaction is about 1.2 cm, and that both particles have large energy losses ($\\rm > 200 k"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0308097","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":"2026-05-18T01:38:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hu/P+RX2tsk77pvygV+fnDs5l70EJBwklRU/M8Qs+07L2OdEDJlRGN8BTrzTsT3tea24Lnqiw2HDy1w+rhZjAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:06:54.447541Z"},"content_sha256":"7d87a4120ac84c06e1bfe59347e737d167d1a8a962bfc27285d5f4781b4cb0ee","schema_version":"1.0","event_id":"sha256:7d87a4120ac84c06e1bfe59347e737d167d1a8a962bfc27285d5f4781b4cb0ee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O3ETA7B7DT2MY7NRX3KJMBOPXD/bundle.json","state_url":"https://pith.science/pith/O3ETA7B7DT2MY7NRX3KJMBOPXD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O3ETA7B7DT2MY7NRX3KJMBOPXD/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":"2026-05-25T15:06:54Z","links":{"resolver":"https://pith.science/pith/O3ETA7B7DT2MY7NRX3KJMBOPXD","bundle":"https://pith.science/pith/O3ETA7B7DT2MY7NRX3KJMBOPXD/bundle.json","state":"https://pith.science/pith/O3ETA7B7DT2MY7NRX3KJMBOPXD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O3ETA7B7DT2MY7NRX3KJMBOPXD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:O3ETA7B7DT2MY7NRX3KJMBOPXD","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":"4d90f1f41fb1eb2c61c0abfe4e0871db3fe6a7dd5b351ab5325547d0dfa8afbd","cross_cats_sorted":[],"license":"","primary_cat":"physics.ins-det","submitted_at":"2003-08-27T10:42:16Z","title_canon_sha256":"0cc107bf0adfcdf341f4ca1d4ebb063524f6a53348b00f0b7f5255938cd075cc"},"schema_version":"1.0","source":{"id":"physics/0308097","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0308097","created_at":"2026-05-18T01:38:08Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0308097v1","created_at":"2026-05-18T01:38:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0308097","created_at":"2026-05-18T01:38:08Z"},{"alias_kind":"pith_short_12","alias_value":"O3ETA7B7DT2M","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"O3ETA7B7DT2MY7NR","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"O3ETA7B7","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:7d87a4120ac84c06e1bfe59347e737d167d1a8a962bfc27285d5f4781b4cb0ee","target":"graph","created_at":"2026-05-18T01:38:08Z","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 on the performance of a micro-TPC with a micro pixel chamber($\\mu$-PIC) readout for a time-resolved neutron position-sensitive detector(PSD). Three-dimensional tracks and the Bragg curves of protons with energies of around 1 MeV were clearly detected by the micro-TPC. More than 95% of gamma-rays of 511 keV were found to be discriminated by simple analysis. Simulation studies showed that the total track length of proton and triton emitted from the $\\rm {}^{3}He$(n,p(573 keV))$\\rm {}^{3}H(191 keV)$ reaction is about 1.2 cm, and that both particles have large energy losses ($\\rm > 200 k","authors_text":"Atsushi Takada, Atsushi Takeda, Hidetoshi Kubo, Kentaro Miuchi, Masaru Ueno, Reiko Orito, Toru Tanimori, Tsutomu Nagayoshi","cross_cats":[],"headline":"","license":"","primary_cat":"physics.ins-det","submitted_at":"2003-08-27T10:42:16Z","title":"Performance of a micro-TPC for a time-resolved neutron PSD"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0308097","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":"sha256:8135c5dff8ba1b5a27402da0319dbeaa75228b9ec2c1cc02cf818aae1d94026d","target":"record","created_at":"2026-05-18T01:38:08Z","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":"4d90f1f41fb1eb2c61c0abfe4e0871db3fe6a7dd5b351ab5325547d0dfa8afbd","cross_cats_sorted":[],"license":"","primary_cat":"physics.ins-det","submitted_at":"2003-08-27T10:42:16Z","title_canon_sha256":"0cc107bf0adfcdf341f4ca1d4ebb063524f6a53348b00f0b7f5255938cd075cc"},"schema_version":"1.0","source":{"id":"physics/0308097","kind":"arxiv","version":1}},"canonical_sha256":"76c9307c3f1cf4cc7db1bed49605cfb8cbbd550685b2b31b83744a5b24177440","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"76c9307c3f1cf4cc7db1bed49605cfb8cbbd550685b2b31b83744a5b24177440","first_computed_at":"2026-05-18T01:38:08.727894Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:38:08.727894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SugmGeCZhP7uHXV9AwGLmdi7Q4Rw3ntaoIERkcbdF3EMlh0xoJqzZ4pu9tEaVD5i/85a/Pi/IJxEcHt2RPnIAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:38:08.728585Z","signed_message":"canonical_sha256_bytes"},"source_id":"physics/0308097","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8135c5dff8ba1b5a27402da0319dbeaa75228b9ec2c1cc02cf818aae1d94026d","sha256:7d87a4120ac84c06e1bfe59347e737d167d1a8a962bfc27285d5f4781b4cb0ee"],"state_sha256":"a1f06ebdea84306da0162fd341790e34b1bde7995f83460e13499b4164cd1eb3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ACY8FMFu6zh9F/Z9UR0RQHzxF4pr0dZ5+mxHvHQTswe3Gb8XOQaQkoTC4EQ+YzGpjm2sfZEsdnpgkQPXRq8jBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T15:06:54.451402Z","bundle_sha256":"1b6fb907b6718139c4b584119c7bb3084ffa6e337ac47b0a5807bd8a0a833197"}}