{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:3NUOTW6S7KYWNRGZMODSWW2MWP","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":"6138c814b638e64873f4f6e5fa9202f2c3146d83365692c5df16158bad9f5238","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-03-09T16:43:55Z","title_canon_sha256":"dc224a0b95869a17146c490d74e15c784ed6139378699003f124e621e5b0f7fd"},"schema_version":"1.0","source":{"id":"1303.2232","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.2232","created_at":"2026-05-18T03:31:19Z"},{"alias_kind":"arxiv_version","alias_value":"1303.2232v1","created_at":"2026-05-18T03:31:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.2232","created_at":"2026-05-18T03:31:19Z"},{"alias_kind":"pith_short_12","alias_value":"3NUOTW6S7KYW","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"3NUOTW6S7KYWNRGZ","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"3NUOTW6S","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:cf968e51db32dc2a2fd9c8a44e9768098558b85cd0d576505e83293c747ba48c","target":"graph","created_at":"2026-05-18T03:31:19Z","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":"The general properties needed in targets (sources) for high precision, high accuracy measurements are reviewed. The application of these principles to the problem of developing targets for the Fission TPC is described. Longer term issues, such as the availability of actinide materials, improved knowledge of energy losses and straggling and the stability of targets during irradiation are also discussed.","authors_text":"A.B. Laptev, B. Selhan, B. Wendt, David M. Asner, D. Isenhower, D.L. Duke, D. Towell, E. Burgett, F. Tovesson, G. Tatishvili, H. Qu, J. Bundgaard, J. Deaven, J. L. Klay, J. Ruz, L. Snyder, L. Wood, L. Yao, M. Cunningham, M. Heffer, N. Kornilov, R. G. Baker, R. Meharchand, R. S. Towell, R.T. Thornton, S. Grimes, S. Sangiorgio, S. Stave, S. Watson, T. Hill, T.N. Massey, U. Greife, V. Kleinrath, W. Loveland","cross_cats":["nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-03-09T16:43:55Z","title":"Targets for Precision Measurements"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.2232","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":"sha256:7f3b9f8c13732223d13c7cbd3dbc1e4ffde01aeb78307ae86cd762add3c10e54","target":"record","created_at":"2026-05-18T03:31:19Z","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":"6138c814b638e64873f4f6e5fa9202f2c3146d83365692c5df16158bad9f5238","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-03-09T16:43:55Z","title_canon_sha256":"dc224a0b95869a17146c490d74e15c784ed6139378699003f124e621e5b0f7fd"},"schema_version":"1.0","source":{"id":"1303.2232","kind":"arxiv","version":1}},"canonical_sha256":"db68e9dbd2fab166c4d963872b5b4cb3c408f68fc2c39e49ad68f98b81a7098b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"db68e9dbd2fab166c4d963872b5b4cb3c408f68fc2c39e49ad68f98b81a7098b","first_computed_at":"2026-05-18T03:31:19.612377Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:31:19.612377Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+aCOSleCA11+RT41+NrqQr3QUxMvmmSZ6MoDGPCepoiD1LDtuIugrtAax6hMl9Y2NsJbdZ+wdSdsTa36xH+eAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:31:19.613049Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.2232","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7f3b9f8c13732223d13c7cbd3dbc1e4ffde01aeb78307ae86cd762add3c10e54","sha256:cf968e51db32dc2a2fd9c8a44e9768098558b85cd0d576505e83293c747ba48c"],"state_sha256":"da56264de61606989cf405c76b6752b087447ba3394a337933d322d8dfa2f61d"}