{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:K4VDTBURKN2ICUYX5WKX5JEEXO","short_pith_number":"pith:K4VDTBUR","canonical_record":{"source":{"id":"1801.03620","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-01-11T02:58:53Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"fa77ef18f1e9903faf2f1c36a3e4cf5c16d0d3099b6fd6b22662173006fffdb5","abstract_canon_sha256":"3b6d49788aa5ba157b26dc68491413e533d56c718af0cf7b030586c6d6e7a963"},"schema_version":"1.0"},"canonical_sha256":"572a3986915374815317ed957ea484bba95bcdb53fe2359ad2c51134b235692b","source":{"kind":"arxiv","id":"1801.03620","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.03620","created_at":"2026-05-18T00:18:11Z"},{"alias_kind":"arxiv_version","alias_value":"1801.03620v2","created_at":"2026-05-18T00:18:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.03620","created_at":"2026-05-18T00:18:11Z"},{"alias_kind":"pith_short_12","alias_value":"K4VDTBURKN2I","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_16","alias_value":"K4VDTBURKN2ICUYX","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_8","alias_value":"K4VDTBUR","created_at":"2026-05-18T12:32:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:K4VDTBURKN2ICUYX5WKX5JEEXO","target":"record","payload":{"canonical_record":{"source":{"id":"1801.03620","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-01-11T02:58:53Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"fa77ef18f1e9903faf2f1c36a3e4cf5c16d0d3099b6fd6b22662173006fffdb5","abstract_canon_sha256":"3b6d49788aa5ba157b26dc68491413e533d56c718af0cf7b030586c6d6e7a963"},"schema_version":"1.0"},"canonical_sha256":"572a3986915374815317ed957ea484bba95bcdb53fe2359ad2c51134b235692b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:11.816117Z","signature_b64":"LbwEXS++Id6/WhWlXxqN8FCBy9j+gXErNzvrmZkPEUeqG493xarHQisZBMjfgRhLOW3rY9/iu+sDIZQNhnIyDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"572a3986915374815317ed957ea484bba95bcdb53fe2359ad2c51134b235692b","last_reissued_at":"2026-05-18T00:18:11.815441Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:11.815441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1801.03620","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:18:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HkWxUWfd4fOlhdY8hoAJirhrOOAOPuxl1oxhfcMNJ2prnR3CBQ8er+n8/c9YRj6TMYs9/h1+qVDI0uFD0TprDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T14:08:15.630791Z"},"content_sha256":"957fd79feaf529c23ca0c45a91799efde5821936337333d71aed5559d4e2d450","schema_version":"1.0","event_id":"sha256:957fd79feaf529c23ca0c45a91799efde5821936337333d71aed5559d4e2d450"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:K4VDTBURKN2ICUYX5WKX5JEEXO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Response of gadolinium doped liquid scintillator to charged particles: measurement based on intrinsic U/Th contamination","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"2), (2) Institute of Nuclear Science, (3) Key Laboratory of Particle, (4) Institute of Physics, Academia Sinica, Beijing, Chang-Jian Tang (1), Chengdu, Han-Tao He (1), Hao-Yang Xing (1), Henry T. Wong (4), Jing-Jun Zhu (2) ((1) College of Physical Science, Li Wang (3), Ministry of Education, Qiang Du (1, Qian Yue (3), Radiation Imaging, Shin-Ted Lin (1), Shu-Kui Liu (1), Sichuan University, Taipei), Technology, Tsinghua University","submitted_at":"2018-01-11T02:58:53Z","abstract_excerpt":"A measurement is reported for the response to charged particles of a liquid scintillator named EJ-335 doped with 0.5% gadolinium by weight. This liquid scintillator was used as the detection medium in a neutron detector. The measurement is based on the in-situ $\\alpha$-particles from the intrinsic Uranium and Thorium contamination in the scintillator. The $\\beta$-$\\alpha$ and the $\\alpha$-$\\alpha$ cascade decays from the U/Th decay chains were used to select $\\alpha$-particles. The contamination levels of U/Th were consequently measured to be $(5.54\\pm0.15)\\times 10^{-11}$ g/g, $(1.45\\pm0.01)\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.03620","kind":"arxiv","version":2},"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":"2026-05-18T00:18:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wKL0yywf3Jn4W1aMBkiIwEtM0FefnK6024zCojUZ8kbBCNjwBqjMgxvKc/DDh+sZjcRHG9jzUHPgG2h2+LMvAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T14:08:15.631159Z"},"content_sha256":"a6d3f53e850753a8fa2a37d512fdc9ef38f1f68c94f65686fcd931e3a89e9840","schema_version":"1.0","event_id":"sha256:a6d3f53e850753a8fa2a37d512fdc9ef38f1f68c94f65686fcd931e3a89e9840"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K4VDTBURKN2ICUYX5WKX5JEEXO/bundle.json","state_url":"https://pith.science/pith/K4VDTBURKN2ICUYX5WKX5JEEXO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K4VDTBURKN2ICUYX5WKX5JEEXO/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":"2026-06-02T14:08:15Z","links":{"resolver":"https://pith.science/pith/K4VDTBURKN2ICUYX5WKX5JEEXO","bundle":"https://pith.science/pith/K4VDTBURKN2ICUYX5WKX5JEEXO/bundle.json","state":"https://pith.science/pith/K4VDTBURKN2ICUYX5WKX5JEEXO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K4VDTBURKN2ICUYX5WKX5JEEXO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:K4VDTBURKN2ICUYX5WKX5JEEXO","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":"3b6d49788aa5ba157b26dc68491413e533d56c718af0cf7b030586c6d6e7a963","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-01-11T02:58:53Z","title_canon_sha256":"fa77ef18f1e9903faf2f1c36a3e4cf5c16d0d3099b6fd6b22662173006fffdb5"},"schema_version":"1.0","source":{"id":"1801.03620","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.03620","created_at":"2026-05-18T00:18:11Z"},{"alias_kind":"arxiv_version","alias_value":"1801.03620v2","created_at":"2026-05-18T00:18:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.03620","created_at":"2026-05-18T00:18:11Z"},{"alias_kind":"pith_short_12","alias_value":"K4VDTBURKN2I","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_16","alias_value":"K4VDTBURKN2ICUYX","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_8","alias_value":"K4VDTBUR","created_at":"2026-05-18T12:32:33Z"}],"graph_snapshots":[{"event_id":"sha256:a6d3f53e850753a8fa2a37d512fdc9ef38f1f68c94f65686fcd931e3a89e9840","target":"graph","created_at":"2026-05-18T00:18:11Z","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":"A measurement is reported for the response to charged particles of a liquid scintillator named EJ-335 doped with 0.5% gadolinium by weight. This liquid scintillator was used as the detection medium in a neutron detector. The measurement is based on the in-situ $\\alpha$-particles from the intrinsic Uranium and Thorium contamination in the scintillator. The $\\beta$-$\\alpha$ and the $\\alpha$-$\\alpha$ cascade decays from the U/Th decay chains were used to select $\\alpha$-particles. The contamination levels of U/Th were consequently measured to be $(5.54\\pm0.15)\\times 10^{-11}$ g/g, $(1.45\\pm0.01)\\","authors_text":"2), (2) Institute of Nuclear Science, (3) Key Laboratory of Particle, (4) Institute of Physics, Academia Sinica, Beijing, Chang-Jian Tang (1), Chengdu, Han-Tao He (1), Hao-Yang Xing (1), Henry T. Wong (4), Jing-Jun Zhu (2) ((1) College of Physical Science, Li Wang (3), Ministry of Education, Qiang Du (1, Qian Yue (3), Radiation Imaging, Shin-Ted Lin (1), Shu-Kui Liu (1), Sichuan University, Taipei), Technology, Tsinghua University","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-01-11T02:58:53Z","title":"Response of gadolinium doped liquid scintillator to charged particles: measurement based on intrinsic U/Th contamination"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.03620","kind":"arxiv","version":2},"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":"sha256:957fd79feaf529c23ca0c45a91799efde5821936337333d71aed5559d4e2d450","target":"record","created_at":"2026-05-18T00:18:11Z","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":"3b6d49788aa5ba157b26dc68491413e533d56c718af0cf7b030586c6d6e7a963","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-01-11T02:58:53Z","title_canon_sha256":"fa77ef18f1e9903faf2f1c36a3e4cf5c16d0d3099b6fd6b22662173006fffdb5"},"schema_version":"1.0","source":{"id":"1801.03620","kind":"arxiv","version":2}},"canonical_sha256":"572a3986915374815317ed957ea484bba95bcdb53fe2359ad2c51134b235692b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"572a3986915374815317ed957ea484bba95bcdb53fe2359ad2c51134b235692b","first_computed_at":"2026-05-18T00:18:11.815441Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:18:11.815441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LbwEXS++Id6/WhWlXxqN8FCBy9j+gXErNzvrmZkPEUeqG493xarHQisZBMjfgRhLOW3rY9/iu+sDIZQNhnIyDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:18:11.816117Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.03620","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:957fd79feaf529c23ca0c45a91799efde5821936337333d71aed5559d4e2d450","sha256:a6d3f53e850753a8fa2a37d512fdc9ef38f1f68c94f65686fcd931e3a89e9840"],"state_sha256":"48d5dc57a63a32d7263f2ddac1c1c123ae2d5f0e2c4f728bdf712d5cbb2c7d56"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MmlgQ5nKCLLa6cBXfOx6vhWF8wWiHhf9pVNqHZpLK97iSgrJDRKPzYbxKVEWXXoI3ShdefmWZ0ynKP0C6DkZBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T14:08:15.633129Z","bundle_sha256":"641aa4c68f99fa648fc066be94398ca7c32e4c5d83214475e6757d48c3df99ca"}}